MC145540P_技术文档

Order this document

by MC145540/D

SEMICONDUCTOR TECHNICAL DATA

Advance Information

This document contains information on a new product. Specifications and information herein are subject to change without notice.

REV 0

Motorola, Inc. 1997

This page intentionally left blank.

TABLE OF CONTENTS

SECTION 1

GENERAL DESCRIPTION

1.1

1.2

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

SECTION 2

DEVICE DESCRIPTION

2.1

2.2

MC145540 ADPCM CODEC DEVICE DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1.1

2.1.2

2.1.3

PCM Codec-Filter Block Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

ADPCM Transcoder Block Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Charge Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

MC145540 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.2.1

2.2.1.1

2.2.1.2

Power Supply Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Analog Signal Processing Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Digital Signal Processing Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.2.2

Analog Interface and Signal Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Transmit Analog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Transmit Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.2.2.1

2.2.2.2

2.2.2.3

2.2.2.3.1 Receive Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.2.2.3.2 Receive Analog Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.2.2.3.3 Receive Analog Output Drivers and Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.2.3

2.2.4

2.2.5

2.2.6

Sidetone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Universal Tone Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Power Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Signal Processing Clock (SPC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.2.7

2.2.7.1

2.2.7.2

Digital I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Long Frame Sync . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Short Frame Sync . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.3

2.4

PIN ASSIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

PIN DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2.4.1

2.4.2

2.4.3

Power Supply Pins (V , V

, V

, V , V , C1–, C1+) . . . . . . . . . . . . . . . . . . . 2-11

SS EXT DSP DD AG

Analog Interface Pins (TG, TI–, TI+, RO, AXO–, AXO+, PI, PO–, PO+) . . . . . . . . . . . . 2-12

ADPCM/PCM Serial Interface (FST, BCLKT, DT, SPC, DR, BCLKR, FSR) . . . . . . . . . . 2-13

2.4.4

2.4.4.1

Serial Control Port (SCP) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Byte Register Operations (PDI/RESET, SCP EN, SCP CLK, SCP Tx, SCP Rx) . . . . . . . 2-15

MOTOROLA

MC145540

i

SECTION 3

SERIAL CONTROL PORT REGISTERS

3.1

3.2

3.3

3.4

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

REGISTER MAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

BIT DESCRIPTION LEGEND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

BYTE REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.4.1

BR0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

BR1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

BR2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

BR3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

BR4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

BR5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

BR6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

BR7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

BR8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

BR9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

BR10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

BR11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

BR12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

BR13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

BR14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

BR15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

3.4.2

3.4.3

3.4.4

3.4.5

3.4.6

3.4.7

3.4.8

3.4.9

3.4.10

3.4.11

3.4.12

3.4.13

3.4.14

3.4.15

3.4.16

SECTION 4

ELECTRICAL SPECIFICATIONS

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

DIGITAL LEVELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

ANALOG ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

POWER DRIVERS PI, PO+, PO–, AXO+, AXO– . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

ANALOG ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

POWER DRIVERS PI, PO+, PO–, AXO+, AXO– . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

ANALOG TRANSMISSION PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

DIGITAL SWITCHING CHARACTERISTICS, LONG FRAME SYNC

AND SHORT FRAME SYNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4.10 DIGITAL SWITCHING CHARACTERISTICS — SERIAL CONTROL PORT (SCP) . . . . . . . . . 4-10

ii

MC145540

MOTOROLA

SECTION 5

PACKAGE DIMENSIONS

5.1

6.1

CASE OUTLINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

SECTION 6

APPLICATION CIRCUITS

SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

SECTION 7

PCB LAYOUT GUIDELINES

7.1

7.2

7.3

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

PC BOARD MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

POWER SUPPLY, GROUND, AND NOISE CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

SECTION 8

PROGRAMMING THE MC145540 TONE GENERATORS

8.1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1.1

8.1.2

8.1.3

Programing the Tone Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Tone Frequency Coefficient Calculation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

Tone Frequency Coefficient Calculation using Integer Mathematics for

Decimal to Hexadecimal Conversion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8.1.4

Tone Attenuation Coefficient Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

MOTOROLA

MC145540

iii

LIST OF FIGURES

Figure

#

Page

#

Title

2-1

2-2

2-3

2-4

2-5

2-6

2-7

2-8

2-9

2-10

2-11

4-1

4-2

4-3

5-1

5-2

6-1

6-2

6-3

MC145540 ADPCM Codec Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Long Frame Sync — 64 kbps PCM Data Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Long Frame Sync — 32 kbps ADPCM Data Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Long Frame Sync — 24 kbps ADPCM Data Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Long Frame Sync — 16 kbps ADPCM Data Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Short Frame Sync — 32 kbps ADPCM Data Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

SCP Byte Register Write Operation Using Double 8-Bit Transfer . . . . . . . . . . . . . . . . . . . . . 2-16

SCP Byte Register Write Operation Using Single 16-Bit Transfer . . . . . . . . . . . . . . . . . . . . 2-16

SCP Byte Register Read Operation Using Double 8-Bit Transfer . . . . . . . . . . . . . . . . . . . . . 2-16

SCP Byte Register Read Operation Using Single 16-Bit Transfer . . . . . . . . . . . . . . . . . . . . 2-16

MC145540 Long Frame Sync Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

MC145540 Short Frame Sync Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

MC145540 Serial Control Port (SCP) Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Plastic DIP Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Plastic SOG Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

MC145540 Handset Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

MC145540 Transformer Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

MC145540 Transformer + Speaker Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

iv

MC145540

MOTOROLA

LIST OF TABLES

Figure

#

Page

#

Title

2-1

2-2

3-1

3-2

3-3

3-4

3-5

3-6

3-7

3-8

3-9

8-1

8-2

8-3

PCM Full Scale and Zero Words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

PCM Codes for Digital mW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Bit Read/Write Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Byte Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Input/Output Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Sidetone Gains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Transmit Analog Trim Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Receive Analog Trim Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Digital Receive Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Tone Generator Address Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Tone Generator Coefficients for DTMF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Tone Generator Address Parameter Destinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Frequency Coefficients for Tone Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

Attenuation Coefficients for Tone Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-34

MOTOROLA

MC145540

v

Motorolareserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representationorguaranteeregarding

the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and

specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different

applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does

not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in

systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of

the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such

unintendedor unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless

against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death

associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.

Motorola and

are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.

vi

MC145540

MOTOROLA

1.1 INTRODUCTION

The MC145540 ADPCM Codec is a single chip implementation of a PCM codec-filter and an ADPCM

encoder/decoder, and therefore provides an efficient solution for applications requiring the digitization

and compression of voiceband signals. This device is designed to operate over a wide voltage range,

2.7 to 5.25 V, and as such is ideal for battery powered as well as ac powered applications. The

MC145540 ADPCM Codec also includes a serial control port and internal control and status registers

that permit a microcontroller to exercise many built-in features.

The ADPCM Codec is designed to meet the 32 kbps ADPCM conformance requirements of CCITT

Recommendation G.721 and ANSI T1.301. It also meets ANSI T1.303 and CCITT Recommendation

G.723 for 24 kbps ADPCM operation, and the 16 kbps ADPCM standard, CCITT Recommendation

G.726. This device also meets the PCM conformance specification of the CCITT G.714 Recommenda-

tion.

1.2 FEATURES

Key features of the MC145540 ADPCM Codec include:

• Single 2.7 to 5.25 V Power Supply

• Typical 3 V Power Dissipation of 55 mW, Power Down of 0. 15 mW

• Differential Analog Circuit Design for Lowest Noise

• Complete Mu-Law and A-Law Companding PCM Codec/Filter

• ADPCM Transcoder for 64, 32, 24, and 16 kbps data rates

• Universal Programmable Dual Tone Generator

• Programmable Transmit Gain, Receive Gain, and Sidetone Gain

• Low Noise, High Gain, Three Terminal Input Operational Amplifier for Microphone Interface

• Push-Pull 300 Ω Power Drivers with External Gain Adjust for Receiver Interface

• Push-Pull 300 Ω Auxiliary Output Drivers for Ringer Interface

• Voltage Regulated Charge Pump to Power the Analog Circuitry in Low Voltage Applications

• Receive Side Noise Burst Detect Algorithm

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MC145540

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2.1 MC145540 ADPCM CODEC DEVICE DESCRIPTION

The MC145540 is a single channel Mu-Law or A-Law companding PCM codec-filter with an ADPCM

encoder/decoder operating on a single voltage power supply from 2.7 to 5.25 V.

The MC145540 ADPCM Codec is a complete solution for digitizing and reconstructing voice in com-

pliance with CCITT G.714, G.721, G.723, G.726 and ANSI T1.301 and T1.303 for 64, 32, 24, and

16 kbps. This device satisfies the need for high quality, low power, low data rate voice transmission and

storage applications and is offered in 28-pin DIP and SOG packages.

Referring to Figure 2-1, the main functional blocks of the MC145540 are the switched capacitor

technology PCM codec-filter, the DSP based ADPCM encoder/decoder, and the voltage regulated

charge pump. As an introduction to the functionality of the ADPCM Codec, a basic description of these

functional blocks follows.

2.1.1 PCM Codec-Filter Block Description

A PCM codec-filter is a device used for digitizing and reconstructing the human voice. These devices

were developed primarily for the telephone network to facilitate voice switching and transmission. Once

the voice is digitized, it may be switched by digital switching methods or transmitted long distance (T1,

microwave, fiber optics, satellites, etc.) without degradation. The name codec is an acronym from

“COder” for the analog-to-digital converter (ADC) used to digitize voice, and “DECoder” for the digital-

to-analog converter (DAC) used for reconstructing voice. A codec is a single device that does both the

ADC and DAC conversions.

To digitize voice intelligibly requires a signal to distortion of about 30 dB for a dynamic range of about

40 dB. This may be accomplished with a linear 13-bit ADC and DAC, but will far exceed the required

signal to distortion at amplitudes greater than 40 dB below the peak amplitude. This excess perfor-

mance is at the expense of bits of data per sample. Two methods of data reduction are implemented by

compressing the 13-bit linear scheme to companded 8-bit schemes. These companding schemes fol-

low a segmented or “piecewise-linear” curve formatted as sign bit, three chord bits, and four step bits.

For a given chord, all 16 of the steps have the same voltage weighting. As the voltage of the analog input

increases, the four step bits increment and carry to the three chord bits, which increment. When the

chord bits increment, the step bits double their voltage weighting. This results in an effective resolution

of six bits (sign + chord + four step bits) across a 42 dB dynamic range (seven chords above zero, by

6 dB per chord). There are two companding schemes used: Mu-255 Law specifically in North America,

and A-Law specifically in Europe. These companding schemes are accepted world wide.

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In a sampling environment, Nyquist theory says that to properly sample a continuous signal, it must be

sampled at a frequency higher than twice the signal’s highest frequency component. Voice contains

spectral energy above 3 kHz, but its absence is not detrimental to intelligibility. To reduce the digital

data rate, which is proportional to the sampling rate, a sample rate of 8 kHz was adopted, consistent

with a bandwidth of 3 kHz. This sampling requires a low-pass filter to limit the high frequency energy

above 3 kHz from distorting the inband signal. The telephone line is also subject to 50/60 Hz power line

coupling, which must be attenuated from the signal by a high-pass filter before the analog-to-digital

converter.

The digital-to-analog conversion process reconstructs a staircase version of the desired inband signal

which has spectral images of the inband signal modulated about the sample frequency and its harmon-

ics. These spectral images are called aliasing components which need to be attenuated to obtain the

desired signal. The low-pass filter used to attenuate these aliasing components is typically called a

reconstruction or smoothing filter.

The MC145540 ADPCM Codec incorporates this codec function as one of its main functional blocks.

2.1.2 ADPCM Transcoder Block Description

An Adaptive Differential PCM (ADPCM) transcoder is used to reduce the data rate required to transmit a

PCM encoded voice signal while maintaining the voice fidelity and intelligibility of the PCM signal.

The ADPCM transcoder is used on both Mu-Law and A-Law 64 kbps data streams which represent

either voice or voice band data signals that have been digitized by a PCM codec-filter. The PCM to

ADPCM encoder section of this transcoder has a type of linear predicting digital filter which is trying to

predict the next PCM sample based on the previous history of the PCM samples. The ADPCM to PCM

decoder section implements an identical linear predicting digital filter. The error or difference between

the predicted and the true PCM input value is the information that is sent from the encoder to the decod-

er as an ADPCM word. The characteristics of this ADPCM word include the number of quantized steps

(this determines the number of bits per ADPCM word) and the actual meaning of this word is a function

of the predictor’s output value, the error signal, and the statistics of the history of PCM words. The term

“adaptive” applies to the transfer function of the filter that generates the ADPCM word which adapts to

the statistics of the signals presented to it. This means that an ADPCM word ‘3’ does not have the same

absolute error voltage weighting for the analog signal when the channel is quiet as it does when the

channel is processing a speech signal. The ADPCM to PCM decoder section has a reciprocating filter

function which interprets the ADPCM word for proper reconstruction of the PCM sample.

The adaptive characteristics of the ADPCM algorithm make it difficult to analyze and quantify the

performance of the ADPCM code sequence. The 32 kbps algorithm was optimized for both voice and

moderate speed modems ( 4800 baud). This optimization includes that the algorithm supports the

voice frequency band of 300 Hz to 3400 Hz with minimal degradation for signal-to-distortion, gain-

versus-level, idle channel noise and other analog transmission performance. This algorithm has also

been subjected to audibility testing with many languages for Mean Opinion Score (MOS) ratings and

performed well when compared to 64 kbps PCM. The standards committees have specified multiple

16000 word test vectors for the encoder and for the decoder to verify compliance. To run these test

vectors, the device must be initialized to the reference state by resetting the device.

In contrast to 64 kbps PCM, the ADPCM words appear as random bit activity on an oscilloscope display

whether the audio channel is processing speech or a typical PCM idle channel with nominal bit activity.

The ADPCM algorithm does not support dc signals with the exception of digital quiet, which will result in

all ones in the ADPCM channel. All digital processing is performed on 13-bit linearizations of the 8-bit

PCM companded words, whether the words are Mu-Law or A-Law. This allows an ADPCM channel to

be intelligibly decoded into a Mu-Law PCM sequence or an A-Law PCM sequence irrespective of

whether it was originally digitized as Mu-Law or A-Law. There will be additional quantizing degradation if

the companding scheme is changed because the ADPCM algorithm is trying to reconstruct the original

13-bit linear codes, which included companding quantization.

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2.1.3 Charge Pump

The charge pump is the functional block that allows the analog signal processing circuitry of the

MC145540 to operate with a power supply voltage as low as 2.7 V. This analogsignalprocessingcircuit-

ry includes the PCM codec-filter function, the transmit trim gain, the receive trim gain, the sidetone gain

control, and the transmit input operational amplifier. This circuitry does not dissipate much current but it

does require a nominal voltage of 5 V for the V

power supply.

DD

The charge pump block is a regulated voltage doubler that takes twice the current it supplies from the

voltage applied to the V power supply pin, which may range from 2.7 to 5.25 V and generates the

EXT

supply. ThechargepumpblockreceivesasinputstheV

256 kHz clock that sequences the analog signal processing circuitry, and the Charge Pump Enable

signal from the SCP block. It also makes use of the capacitor connected to the C1+ and C1– pins and

required 5 V V

supplyvoltage, thesame

DD

EXT

the decoupling capacitor connected to the V

pin.

DD

2.2 MC145540 FUNCTIONAL DESCRIPTION

A more detailed description of the circuit functionality for the main functional blocks of the MC145540

follows.

2.2.1 Power Supply Configuration

2.2.1.1 ANALOG SIGNAL PROCESSING POWER SUPPLY

AllanalogsignalprocessingispoweredbytheV

pinat5V. Thisvoltagemaybeapplieddirectlytothe

DD

pin or 5 V may be obtained by the on-chip 5 V regulated charge pump which is powered from the

V

DD

EXT

pin. The V

pin is the main positive power supply pin for this device.

EXT

For applications that are not 5 V regulated, the on-chip 5 V regulated charge pump may be turned on

and C1 will be required. V will require a 1.0 µF decoupling capacitor to filter the voltage spikes of the

DD

charge pump. This allows the V

intended for hand held applications where three NiCad cells or three dry cells would be the power

supply.

power supply to be from 2.7 to 5.25 V. This mode of operation is

EXT

The on-chip 5 V regulated charge pump is a single stage charge pump that effectively series regulates

the amount of voltage it generates and internally applies this regulated voltage to the V

pin. This 5 V

power supply

DD

voltage is developed by connecting the external 0.1 µF capacitor, C1, between the V

EXT

pin and the power supply ground pin, V . This puts a charge of as much as 2.7 V on C1. The charge

SS

pump circuitry then connects the negative lead of C1 to the V

thevoltageatV

EXT

pin, which sums the voltage of C1 with

foraminimumpotentialvoltageof5.4V. ThechargevoltageonC1isregulatedsuch

EXT

that the summing of voltages is regulated to 5 V. This limits all of the voltages on the device to safe levels

for this IC fabrication technology. This charge pumped voltage is then stored on the 1.0 µF capacitor

connected at V

and V , which filters and serves as a reservoir for power. The clock period for this

DD

SS

charge pump is the same 256 kHz as the analog sequencing clock, minimizing noise problems.

For applications with a regulated 5 V (± 5%) power supply, the V pin and the V pin are connected

DD

EXT

to the 5 V power supply. These pins may share one decoupling capacitor in this configuration as a

function of external noise on the power supply. The on-chip 5 V regulated charge pump should be

turned off via the SCP port at register zero. The external capacitor, C1, should not be populated for

these applications.

2.2.1.2 DIGITAL SIGNAL PROCESSING POWER SUPPLY

This device has an on-chip series regulator which limits the voltage of the Digital Signal Processing

(DSP) circuitry to about 3 V. This reduces the maximum power dissipation of this circuitry. From the

V

power supply pin, the DSP circuitry appears as a constant current load instead of a resistive

EXT

2

(CV /2) load for a constant clock frequency. This series regulator is designed to have a low drop-out

voltage, which allows the DSP circuitry to work when the V voltage is as low as 2.7 V. The output of

this regulator is brought out to the V

EXT

pin for a 0.1 µF decoupling capacitor. This regulator is not

DSP

designed to power any loads external to the device.

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2.2.2 Analog Interface and Signal Path

2.2.2.1 TRANSMIT ANALOG

The transmit analog portion of this device includes a low-noise, three terminal operational amplifier

capable of driving a 2 kΩ load. This op amp has inputs of TI+ and TI– and its output is TG. This op amp is

intended to be configured in an inverting gain circuit. The analog signal may be applied directly to the TG

pin if this transmit op amp is independently powered down. Power down may be achieved by connecting

both the TI+ and TI– inputs to the V

pin. The TG pin becomes high impedance when the transmit op

DD

amp is powered down. The TG pin is internally connected to a time continuous three-pole anti-aliasing

pre-filter. This pre-filter incorporates a two-pole Butterworth active low-pass filter, followed by a single

passive pole. This pre-filter is followed by a single-ended to differential converter that is clocked at

512 kHz. All subsequent analog processing utilizes fully differential circuitry. The output of the differen-

tial converter is followed by the transmit trim gain stage. This stage is intended to compensate for gain

tolerances of external components such as microphones. The amount of gain control is 0 to 7 dB in 1 dB

steps. This stage accommodates only positive gain because the maximum signal levels of the output of

the input op amp are the same as the transmit filter and ADC, which should nominally be next to the clip

levels of this device’s circuitry. Any requirement for attenuation of the output of the input op amp would

mean that it is being overdriven. The gain is programmed via the SCP port in BR1 (b2:b0). The next

section is a fully-differential, 5-pole switched-capacitor low-pass filter with a 3.4 kHz frequency cutoff.

After this filter is a 3-pole switched-capacitor high-pass filter having a cutoff frequency of about 200 Hz.

This high-pass stage has a transmission zero at dc that eliminates any dc coming from the analog input

or from accumulated op amp offsets in the preceding filter stages. (This high-pass filter may be removed

from the signal path under control of the SCP port BR8 (b4).) The last stage of the high-pass filter is an

autozeroed sample and hold amplifier.

One bandgap voltage reference generator and digital-to-analog converter (DAC) are shared by the

transmit and receive sections. The autozeroed, switched-capacitor bandgap reference generates pre-

cise positive and negative reference voltages that are virtually independent of temperature and power

supply voltage. A binary-weighted capacitor array (CDAC) forms the chords of the companding struc-

ture, while a resistor string (RDAC) implements the linear steps within each chord. The encode process

uses the DAC, the voltage reference, and a frame-by-frame autozeroed comparator to implement a

successive-approximation analog-to-digital conversion (ADC) algorithm. All of the analog circuitry in-

volved in the data conversion (the voltage reference, RDAC, CDAC, and comparator) are implemented

with a differential architecture.

The nonlinear companded Mu-Law transfer curve of the ADC may be changed to 8-bit linear by BR8

(b5).

The input to the ADC is normally connected to the output of the transmit filter section, but may be

switched to measure the voltage at the V

pin for battery voltage monitoring. This is selected by the

EXT

I/O Mode in BR0 (b4:b3). In this mode, the ADC is programmed to output a linear 8-bit PCM word for the

voltage at V which is intended to be read in BR9 (b7:b0). The data format for the ADC output is a

EXT

Don’t Care for the sign bit and seven magnitude bits. The scaling for the ADC is for 6.3 V at V

full scale (BIN X111 1111). The ADPCM algorithm does not support dc signals.

equals

EXT

2.2.2.2 TRANSMIT DIGITAL

The Digital Signal Processor (DSP) section of this device is a custom designed, interrupt driven, micro-

coded machine optimized for implementing the ADPCM algorithms. In the full duplex speech mode, the

DSP services one encode interrupt and one decode interrupt per frame (125 µs). The encode algorithm

(i.e., 16 kbps, 24 kbps, or 32 kbps ADPCM, or 64 kbps PCM) is determined by the length of the transmit

output enable at the FST pin. The length of the FST enable measured in transmit data clock (BCLKT)

cyclestells the device which encoding rate to use. This enable length information is used by the encoder

each frame. The transmit ADPCM word corresponding to this request will be computed during the next

frame and will be available a total of two frames after being requested. This transmit enable length

information can be delayed by the device an additional four frames corresponding to a total of six

frames. These six frames of delay allow the device to be clocked with the same clocks for both transmit

(encode) and receive (decode), and to be frame aligned for applications that require every sixth frame

signaling. It is important to note that the enable length information is delayed and not the actual ADPCM

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(PCM) sample word. The amount of delay for the FST enable length is controlled in BR7 (b5). If the FST

enable goes low before the falling edge of BCLKT during the last bit of the ADPCM word, the digital data

output circuitry counts BCLKT cycles to keep the data output (DT pin) low impedance for the duration of

the ADPCM data word (2, 3, 4, or 8 BCLKT cycles) minus one half of a BCLKT cycle.

2.2.2.3 RECEIVE

2.2.2.3.1 Receive Digital

The receive digital section of this device accepts serial ADPCM (PCM) words at the DR pin under the

control of the BCLKR and FSR pins. The FSR enable duration, measured in BCLKR cycles, tells the

device which decode algorithm (i.e., 16 kbps, 24 kbps, or 32 kbps ADPCM, or 64 kbps PCM) the DSP

machine should use for the word that is being received at the DR pin. This algorithm may be changed on

a frame by frame basis.

The DSP machine receives an interrupt when an ADPCM word has been received and is waiting to be

decoded into a PCM word. The DSP machine performs a decode and an encode every frame when the

device is operating in its full duplex conversation mode. The DSP machine decodes the ADPCM word

according to CCITT G.726 for 32 kbps, 24 kbps, and 16 kbps. This decoding includes the correction for

the CCITT/ANSI Sync function, except when the receive digital gain is used. The receive digital gain is

anticipated to be user adjustable gain control in handset applications where as much as 12 dB of gain or

more than 12 dB of attenuation may be desirable. The receive digital gain is a linear multiply performed

on the 13-bit linear data before it is converted to Mu-Law or A-Law, and is programmed via the SCP port

in BR3 (b7:b0). The decoded PCM word may be read via the SCP port in BR10 (b7:b0).

2.2.2.3.2 Receive Analog Signal Processing

The receive analog signal processing section includes the DAC described above, a sample and hold

amplifier, a trim gain stage, a 5-pole 3400 Hz switched capacitor low-pass filter with sinX/X correction,

and a 2-pole active smoothing filter to reduce the spectral components of the switched capacitor filter.

(The receive low-pass smoothing filter may be removed from the signal path for the additional spectral

components for applications using the on-chip tone generator function described below. This low-pass

filter performs the sinX/X compensation. The receive filter is removed from the circuit via the SCP in

BR2(b4).) The input to the smoothing filter is the output to the receive trim gain stage. This stage is

intended to compensate for gain tolerances of external components such as handset receivers. This

stage is capable of 0 to 7 dB of attenuation in 1 dB steps. This stage accommodates only attenuation

because the nominal signal levels of the DAC should be next to the clip levels of this device’s circuitry

and any positive gain would overdrive the outputs. The gain is programmed via the SCP port in BR2

(b2:b0).The output of the 2-pole active smoothing filter is buffered by an amplifier which is output at the

RO pin. This output is capable of driving a 2 kΩ load to the V

pin.

AG

2.2.2.3.3 Receive Analog Output Drivers and Power Supply

The high current analog output circuitry (PO+, PO–, PI, AXO+, AXO–) is powered by the V

power

operatingvoltagesforthisdevice, thiscircuitryandtheROpin

EXT

supplypin. DuetothewiderangeofV

haveaprogrammablereferencepointofeitherV

EXT

(2.4V)orV /2. Inapplicationswherethisdevice

is powered with 5 V, it is recommended that the dc reference for this circuitry be programmed to V

AG

EXT

.

AG

This allows maximum output signals for driving high power telephone line transformer interfaces and

loud speaker/ringers. For applications that are battery powered, V will still be 2.4 V, but the receive

AG

analog output circuitry will be powered from as low as 2.7 V. To optimize the output power, this circuitry

should be referenced to one half of the battery voltage, V /2. The RO pin is powered by the V pin,

EXT DD

but its dc reference point is programmed the same as the high current analog output circuitry.

This device has two pairs of power amplifiers that are connected in a push-pull configuration. These

push-pull power driver pairs have similar drive capabilities, but have different circuit configurations and

different intended uses. The PO+ and PO– power drivers are intended to accommodate large gain

ranges with precise adjustment by two external resistors for applications such as driving a telephone

line or a handset receiver. The PI pin is the inverting input to the PO– power amplifier. The non-inverting

input is internally tied to the same reference as the RO output. This allows this amplifier to be used in an

inverting gain circuit with two external resistors. The PO+ amplifier has a gain of –1, and is internally

connected to the PO– output. This complete power amplifier circuit is a differential (push-pull) amplifier

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MC145540

MOTOROLA

with adjustable gain which is capable of driving a 300 Ω load to +12 dBm when V

is 5 V. The PO+

EXT

and PO– outputs are intended to drive loads differentially and not to V

or V . The PO+ and PO–

SS

AG

power amplifiers may be powered down independently of the rest of the chip by connecting the PI pin to

or in BR2 (b5).

V

DD

The other paired power driver outputs are the AXO+ and AXO– Auxiliary outputs. These push-pull

output amplifiers are intended to drive a ringer or loud speaker with impedance as low as 300 Ω to

+12 dBm when V

is 5 V. The AXO+ and AXO– outputs are intended to drive loads differentially and

EXT

not to V

or V . The AXO+ and AXO– power amplifiers may be powered down independently of the

SS

AG

rest of the chip via the SCP port in BR2 (b6).

2.2.3 Sidetone

The Sidetone function of this device allows a controlled amount of the output from the transmit filter to be

summed with the output of the DAC at the input to the receive low-pass filter. The sidetone component

has gains of –8.5 dB, –10.5 dB, –12.0 dB, –13.5 dB, –15.0 dB, –18.0 dB, –21.5 dB, and –70 dB. The

sidetone function is controlled by the SCP port in BR1 (b6:b4).

2.2.4 Universal Tone Generator

The Universal Dual Tone Generator function supports both the transmit and the receive sides of this

device. When the tone generator is being used, the decoder function of the DSP circuit is disabled. The

output of the tone generator is made available to the input of the receive digital gain function for use at

the receive analog outputs. In handset applications, this could be used for generating DTMF, distinctive

ringing or call progress feedback signals. In telephone line interface applications, this tone generator

could be used for signaling on the line. The tone generator output is also available for the input to the

encoder function of the DSP machine for outputting at the DT pin. This function is useful in handset

applications for non-network signaling such as information services, answering machine control, etc. At

the network interface side of a cordless telephone application, this function could be used for dialing

feedback or call progress to the handset. The tone generator function is controlled by the SCP port in

BR4, BR5, and BR7. The tone generator does not work when the device is operated in 64 kbps mode,

except when analog loopback is enabled at BR0 (b5). For more information on programming the tone

generators, see Section 8.

2.2.5 Power Down

There are two methods of putting all of this device into a low power consumption mode that makes the

device nonfunctional and consumes virtually no power. PDI/RESET is the power down input and reset

pin which, when taken low for 10 SPC clock cycles or more, powers down the device. Another way to

power the device down is by the SCP port at BR0. BR0 allows the analog section of this device to be

powered down individually and/or the digital section of this device to be powered down individually.

When the chip is powered down, the V , TG, RO, PO+, PO–, AXO+, AXO–, DT, and SCP Tx outputs

AG

are high impedance . To return the chip to the power up state, PDI/RESET must be high and the SPC

clock and the FST or the FSR frame sync pulses must be present. The ADPCM algorithm is reset to the

CCITT initial state following the reset transition from low-to-high logic states. The DT output will remain

in a high-impedance state for at least two FST pulses after power up.

2.2.6 Signal Processing Clock (SPC)

This is the clock that sequences the DSP circuit. This clock may be asynchronous to all other functions

of this device. Clock frequencies of 20.48 MHz or 20.736 MHz are recommended. This clock is also

used to drive a digitally phase locked prescaler that is referenced to FST (8 kHz) and automatically

determines the proper divide ratio to use for achieving the required 256 kHz internal sequencing clock

for all analog signal processing, including analog-to-digital conversion, digital-to-analog conversion,

transmit filtering, receive filtering, and analog gain functions of this device and the charge pump.

The SPC input accepts an input clock frequency from 20.48 to 23.04 MHz. This clock frequency should

be a multiple of 256 kHz within a tolerance of ± 10 SPC clock cycles per FST rising edge. For an FST of

8 kHz without jitter, this equates to a tolerance of ± 80 kHz. The total tolerance is measured in SPC

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cycles per FST rising edge. If FST has jitter, the jitter must be measured in SPC clock cycles which will

be subtracted from 10, and the frequency tolerance for SPC should be tightened accordingly. (The SPC

clock may be optionally specified for higher frequencies. Contact the factory for more information.)

The analog sequencing function of the SPC clock may be eliminated by reprogramming the device to

use the BCLKR pin as the direct input for the required 256 kHz analog sequencing clock. The 256 kHz

clock applied at BCLKR must be an integer 32 times the FST 8 kHz clock and be approximately rising

edge aligned with the FST rising edge. This mode requires that the transmit and receive ADPCM trans-

fers be controlled by the BCLKT pin. This is reprogrammed via the SCP port in BR0 (b7).

2.2.7 Digital I/O

The MC145540 is programmable for Mu-Law or A-Law. The timing for the PCM data transfer is inde-

pendent of the companding scheme selected. Table 2-1 shows the 8-bit data word format for positive

and negative zero and full scale for both 64 kbps companding schemes. Refer to Section 2.4.3, Figures

2-3 through 2-7, for a summary and comparison of the five PCM data interface modes of this device.

2.2.7.1 LONG FRAME SYNC

Long Frame Sync is the industry name for one type of clocking format which controls the transfer of the

ADPCM or PCM data words. Refer to Section 2.4.3, Figures 2-3 through 2-6. The “Frame Sync” or

“Enable” is used for two specific synchronizing functions. The first is to synchronize the PCM data word

transfer, and the second is to control the internal analog-to-digital and digital-to-analog conversions.

The term “Sync” refers to the function of synchronizing the PCM data word onto or off of the multiplexed

serial PCM data bus, also known as a PCM highway. The term “Long” comes from the duration of the

frame sync measured in PCM data clock cycles. Long Frame Sync timing occurs when the frame sync is

used directly as the PCM data output driver enable. This results in the PCM output going low impedance

with the rising edge of the transmit frame sync, and remaining low impedance for the duration of the

transmit frame sync.

Table 2-1. PCM Full Scale and Zero Words

Mu-Law

Chord Bits

0 0 0

A-Law

Chord Bits

0 1 0

Level

+ Full Scale

+ Zero

Sign Bit

Step Bits

0 0 0 0

1 1 1 1

0 0 0 0

Sign Bit

Step Bits

1 0 1 0

0 1 0 1

1 0 1 0

1

0

1

0

1 1 1

1 0 1

– Zero

1 1 1

1 0 1

– Full Scale

0 0 0

0 1 0

Table 2-2. PCM Codes for Digital mW

Mu-Law

A-Law

Chord Bits

0 1 1

Phase

π/8

Sign Bit

Chord Bits

0 0 1

0 0 0

0 0 1

0 0 0

0 0 1

Step Bits

1 1 1 0

1 0 1 1

1 1 1 0

1 0 1 1

1 1 1 0

Sign Bit

Step Bits

0 1 0 0

0 0 0 1

0 1 0 0

0 0 0 1

0 1 0 0

0

1

0

1

3π/8

0 1 0

5π/8

0 1 0

7π/8

0 1 1

9π/8

0 1 1

11π/8

13π/8

15π/8

0 1 0

0 1 1

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The implementation of Long Frame Sync for this device has maintained industry compatibility and been

optimized for external clocking simplicity. The PCM data output goes low impedance with the rising

edge of the FST pin but the MSB of the data is clocked out due to the logical AND of the transmit frame

sync (FST pin) with the transmit data clock (BCLKT pin). This allows either the rising edge of the FST

enable or the rising edge of the BCLKT data clock to be first. This implementation includes the PCM

data output remaining low impedance until the middle of the LSB (seven and a half data clock cycles for

64 kbps PCM, three and a half data clock cycles for 32 kbps ADPCM, etc.). This allows the frame sync

to be approximately rising edge aligned with the initiation of the PCM data word transfer but the frame

sync does not have a precise timing requirement for the end of the PCM data word transfer. This pre-

vents bus contention between similar devices on a common bus. The device recognizes Long Frame

Sync clocking when the frame sync is held high for two consecutive falling edges of the transmit data

clock.

In the full duplex speech mode, the DSP services one encode interrupt and one decode interrupt per

frame (125 µs). The encode algorithm (i.e., 16 kbps, 24 kbps, or 32 kbps ADPCM, or 64 kbps PCM) is

determined by the length of the transmit output enable at the FST pin. The length of the FST enable

measured in transmit data clock (BCLKT) cycles tells the device which encoding rate to use. This en-

able length information is used by the encoder each frame. The transmit ADPCM word corresponding to

this request will be computed during the next frame and be available a total of two frames after being

requested. This transmit enable length information can be delayed by the device an additional four

frames corresponding to a total of six frames. This six frames of delay allows the device to be clocked

with the same clocks for both transmit (encode) and receive (decode), and to be frame aligned for

applications that require every sixth frame signaling. It is important to note that the enable length in-

formation is delayed and not the actual ADPCM (PCM) sample word. The amount of delay for the FST

enable length is controlled by the SCP port at BR7 (b5). The digital data output circuitry counts BCLKT

cycles to keep the data output (DT pin) low impedance for the duration of the ADPCM data word (2, 3, 4,

or 8 BCLKT cycles) minus one half of a BCLKT cycle.

The length of the FST enable tells the DSP what encoding algorithm to use. The transmit logic decides

on each frame sync whether it should interpret the next frame sync pulse as a Long or a Short Frame

Sync. The device is designed to prevent PCM bus contention by not allowing the PCM data output to go

low impedance for at least two frame sync cycles after power is applied or when coming out of the

power-down mode.

The receive side of the device is designed to accept the same frame sync and data clock as the transmit

side and to be able to latch its own transmit PCM data word. Thus the PCM digital switch only needs to

be able to generate one type of frame sync for use by both transmit or receive sections of the device.

The logical AND of the receive frame sync with the receive data clock tells the device to start latching the

serial word into the receive data input on the falling edges of the receive data clock. The internal receive

logic counts the receive data clock falling edges while the FSR enable is high and transfers the enable

length and the PCM data word into internal registers for access by the DSP machine which also sets the

DSP’s decoder interrupt.

The receive digital section of this device accepts serial ADPCM (PCM) words at the DR pin under the

control of the BCLKR and FSR pins. The FSR enable duration measured in BCLKR cycles, tells the

device which decode algorithm (i.e., 16 kbps, 24 kbps, or 32 kbps ADPCM, or 64 kbps PCM) the DSP

machine should use for the word that is being received at the DR pin. This algorithm may be changed on

a frame by frame basis.

When the device is programmed to be in the PCM Codec mode by BR0 (4:3), the device will output and

input the complete 8-bit PCM words using the long frame sync clocking format as though the FST and

FSR pulses were held high for eight data clock cycles.

The DSP machine receives an interrupt when an ADPCM word has been received and is waiting to be

decoded into a PCM word. The DSP machine performs a decode and an encode every frame when the

device is operating in its full duplex conversation mode. The DSP machine decodes the ADPCM word

according to CCITT G.726 for 32 kbps, 24 kbps, and 16 kbps.

MOTOROLA

MC145540

2-9

2.2.7.2 SHORT FRAME SYNC

Short Frame Sync is the industry name for this type of clocking format which controls the transfer of the

ADPCM data words. Refer to Section 2.4.3, Figure 2-7. This device uses Short Frame Sync timing for

32 kbps ADPCM only. The “Frame Sync” or “Enable” is used for two specific synchronizing functions.

The first is to synchronize the ADPCM data word transfer, and the second is to control the internal

analog-to-digital and digital-to-analog conversions. The term “Sync” refers to the function of synchro-

nizing the ADPCM data word onto or off of the multiplexed serial ADPCM data bus, also known as a

PCM highway. The term “Short” comes from the duration of the frame sync measured in PCM data clock

cycles. Short Frame Sync timing occurs when the frame sync is used as a “pre-synchronization” pulse

that is used to tell the internal logic to clock out the ADPCM data word under complete control of the data

clock. The Short Frame Sync is held high for one falling data clock edge. The device outputs the

ADPCM data word beginning with the following rising edge of the data clock. This results in the ADPCM

output going low impedance with the rising edge of the transmit data clock, and remaining low imped-

ance until the middle of the LSB (three and a half PCM data clock cycles).

The device recognizes Short Frame Sync clocking when the frame sync is held high for one and only

one falling edge of the transmit data clock. The transmit logic decides on each frame sync whether it

should interpret the next frame sync pulse as a Long or a Short Frame Sync. It is not recommended to

switch between Long Frame Sync and Short Frame Sync clocking without going through a power down

cycle due to bus contention problems. The device is designed to prevent PCM bus contention by not

allowing the ADPCM data output to go low impedance for at least two frame sync cycles after power is

applied or when coming out of a power-down mode.

The receive side of the device is designed to accept the same frame sync and data clock as the transmit

side and to be able to latch its own transmit ADPCM data word. Thus the PCM digital switch only needs

to be able to generate one type of frame sync for use by both transmit or receive sections of the device.

The falling edge of the receive data clock (BCLKR) latching a high logic level at the receive frame sync

(FSR) input tells the device to start latching the 4-bit ADPCM serial word into the receive data input on

the following four falling edges of the receive data clock. The internal receive logic counts the receive

data clock cycles and transfers the ADPCM data word to a register for access by the DSP.

When the device is programmed to be in the PCM Codec mode by BR0 (4:3), the device will output the

complete 8-bit PCM word using the short frame sync clocking format. The 8-bit PCM word will be

clocked out (or in) the same way that the 4-bit ADPCM word would be, except that the fourth bit will be

valid for the full BCLKT period and the eighth bit will be valid for only one half of the BCLKT period.

2.3 PIN ASSIGNMENT

The pin assignments for the MC145540 28-lead DIP and SOG packages are shown in Figure 2-2.

•

MC145540P

28-LEAD PLASTIC DIP

CASE 710

MC145540DW

28-LEAD WIDE BODY SOG

CASE 751F

Figure 2-2. Pin Assignments

2-10

MC145540

MOTOROLA

2.4 PIN DESCRIPTIONS

The pin descriptions are listed in functional groups and provide detailed information about the particular

subsystem of the device and the associated pins.

2.4.1 Power Supply Pins

V

SS

Negative Power Supply (Pin 22)

This is the most negative power supply and is typically connected to 0 V.

V

EXT

External Power Supply Input (Pin 9)

This power supply input pin must be between 2.7 and 5.25 V. Internally, it is connected to the input of the

V

voltage regulator, the 5 V regulated charge pump, and all digital I/O including the Serial Control

DSP

Port and the ADPCM Serial Data Port. This pin is also connected to the analog output drivers (PO+,

PO–, AXO+ and AXO–). This pin should be decoupled to V with a 0.1 µF ceramic capacitor. This pin

SS

pins when the device is powered down.

is internally connected to the V

and V

DD

DSP

V

DSP

Digital Signal Processor Power Supply Output (Pin 8)

This pin is connected to the output of the on-chip V voltage regulator which supplies the positive

DSP

voltage to the DSP circuitry and to the other digital blocks of the ADPCM Codec. This pin should be

decoupled to V with a 0.1 µF ceramic capacitor. This pin cannot be used for powering external loads.

SS

This pin is internally connected to the V

pin during power down to retain memory.

EXT

V

DD

Positive Power Supply Input/Output (Pin 28)

This is the positive output of the on-chip voltage regulated charge pump and the positive power supply

input to the analog sections of the device. Depending on the supply voltage available, this pin can

function in one of two different operating modes.

WhenV

issuppliedfroma regulated 5 V±5%powersupply,V

isaninputandshouldbeexternally

EXT

connected to V

disabledinBR0(b2). InthiscaseV

DD

. Charge pump capacitor C1 should not be used and the charge pump should be

EXT

andV

cansharethesame0.1µFceramicdecouplingcapaci-

DD

EXT

tor to V

.

SS

When V

should be used. In this case V

is supplied from 2.70 to 5.25 V, such as battery powered applications, the charge pump

EXT

is the output of the on-chip voltage regulated charge pump and must

DD

EXT DD

not be connected to V

. V

should be decoupled to V

with a 1.0 µF ceramic capacitor. This pin

SS

cannot be used for powering external loads in this operating mode. This pin is internally connected to

the V pin when the charge pump is turned off or the device is powered down.

EXT

V

AG

Analog Ground Output (Pin 4)

This output pin provides a mid-supply analog ground regulated to 2.4 V. All analog signal processing

within this device is referenced to this pin. This pin should be decoupled to V

with a 0.01 to 0.1 µF

SS

ceramic capacitor. If the audio signals to be processed are referenced to V , then special precautions

SS

mustbeutilizedtoavoidnoisebetweenV andtheV

pin.Refertotheapplicationsinformationinthis

pin becomes high impedance when in analog power-down

SS AG

document for more information. The V

AG

mode.

C1–, C1+

Charge Pump Capacitor Pins (Pin 23 and 24)

These are the capacitor connections to the internal voltage regulated charge pump that generate the

V

DD

V

DD

supply voltage. A 0.1 µF capacitor should be placed between these pins. Note that if an external

is supplied, this capacitor should not be in the circuit.

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MC145540

2-11

2.4.2 Analog Interface Pins

TG

Transmit Gain (Pin 1)

This is the output of the transmit gain setting operational amplifier and the input to the transmit band-

passfilter. Thisopampiscapableofdrivinga2kΩ loadtotheV

pin. WhenTI–andTI+areconnected

AG

to V , the TG op amp is powered down and the TG pin becomes a high-impedance input to the trans-

DD

mit filter. All signals at this pin are referenced to the V

pin. This pin is high impedance when the device

AG

is in the analog power-down mode. This op amp is powered by the V

pin.

DD

TI–

Transmit Analog Input (Inverting) (Pin 2)

This is the inverting input of the transmit gain setting operational amplifier. Gain setting resistors are

usually connected from this pin to TG and from this pin to the analog signal source. The common mode

range of the TI+ and TI– pins is from 1.0 V, to V

place this amplifier’s output (TG) in a high-impedance state, thus allowing the TG pin to serve as a

high-impedance input to the transmit filter.

– 2 V. Connecting this pin and TI+ (pin 3) to V will

DD

TI+

Transmit Analog Input (Non-Inverting) (Pin 3)

This is the non-inverting input of the transmit input gain setting operational amplifier. This pin accommo-

dates a differential to single ended circuit for the input gain setting op amp. This allows input signals that

are referenced to the V

pin to be level shifted to the V

pin with minimum noise. This pin may be

SS

AG

connected to the V

pin for an inverting amplifier configuration if the input signal is already referenced

AG

to the V

pin. The common mode range of the TI+ and TI– pins is from 1.0 V, to V

– 2 V. Connecting

will place this amplifier’s output (TG) in a high-impedance state, thus

AG

DD

this pin and TI– (pin 2) to V

DD

allowing the TG pin to serve as a high-impedance input to the transmit filter.

RO

Receive Analog Output (Pin 5)

This is the non-inverting output of the receive smoothing filter from the digital-to-analog converter. This

output is capable of driving a 2 kΩ load to 1.575 V peak referenced to the V

pin. This pin may be dc

by BR2 (b7). This pin is high impedance

when the device is in the analog power-down mode. This pin is high impedance except when it is en-

abled for analog signal output.

AG

referenced to either the V

AG

pin or a voltage of half of V

EXT

AXO–

Auxiliary Audio Power Output (Inverting) (Pin 6)

This is the inverting output of the auxiliary power output drivers. The Auxiliary Power Driver is capable of

differentiallydrivinga300Ω load. ThispoweramplifierispoweredfromV

anditsoutputcanswingto

pin or a voltage of half of

byBR2(b7). Thispinishighimpedanceinpowerdown. Thispinishighimpedanceexceptwhenit

EXT

within 0.5 V of V

SS

EXT

and V

. This pin may be dc referenced to either the V

EXT AG

V

is enabled for analog signal output.

AXO+

Auxiliary Audio Power Output (Non-Inverting) (Pin 7)

This is the non-inverting output of the auxiliary power output drivers. The Auxiliary Power Driver is

capable of differentially driving a 300 Ω load. This power amplifier is powered from V

and its output

pin or a

by BR2 (b7). This pin is high impedance in power down. This pin is high imped-

EXT

can swing to within 0.5 V of V

voltage of half of V

EXT

and V

. This pin may be dc referenced to either the V

EXT AG

SS

ance except when it is enabled for analog signal output.

PI

Power Amplifier Input (Pin 10)

This is the inverting input to the PO– amplifier. The non-inverting input to the PO – amplifier may be dc

referenced to either the V

pin or a voltage of half of V

by BR2 (b7). The PI and PO– pins are used

AG

EXT

with external resistors in an inverting op amp gain circuit to set the gain of the PO+ and PO– push-pull

2-12

MC145540

MOTOROLA

power amplifier outputs. Connecting PI to V

outputs will be high impedance.

will power down these amplifiers and the PO+ and PO–

DD

PO–

Power Amplifier Output (Inverting) (Pin 11)

This is the inverting power amplifier output that is used to provide a feedback signal to the PI pin to set

the gain of the push-pull power amplifier outputs. This power amplifier is powered from V and its

EXT

. This should be noted when setting the gain of this

amplifier. This pin is capable of driving a 300 Ω load to PO+ independent of supply voltage. The PO+

and PO– outputs are differential (push-pull) and capable of driving a 300 Ω load to 3.15 V peak, which is

output can swing to within 0.5 V of V

and V

SS

EXT

6.3 V peak-to-peak when a nominal 5 V power supply is used for V

. The bias voltage and signal

byBR2(b7).

EXT

referenceforthispinmaybedcreferencedtoeithertheV

pinoravoltageofhalfofV

EXT

AG

Low impedance loads must be between PO+ and PO–. This pin is high impedance when the device is in

the analog power-down mode. This pin is high impedance except when it is enabled for analog signal

output.

PO+

Power Amplifier Output (Non-Inverting) (Pin 12)

This is the non-inverting power amplifier output that is an inverted version of the signal at PO–. This

poweramplifierispoweredfromV

anditsoutputcanswingtowithin0.5VofV andV

.Thispin

EXT

SS

EXT

is capable of driving a 300 Ω load to PO–. This pin may be dc referenced to either the V

pin or a

by BR2 (b7). This pin is high impedance when the device is in the analog power-

down mode. This pin is high impedance except when it is enabled for analog signal output. See PI and

PO– for more information.

AG

voltage of half of V

EXT

2.4.3 ADPCM/PCM Serial Interface

FST

Frame Sync, Transmit (Pin 18)

When used in the Long Frame Sync or Short Frame Sync mode, this pin accepts an 8 kHz clock that

synchronizes the output of the serial ADPCM data at the DT pin.

BCLKT

Bit Clock, Transmit (Pin 19)

When used in the Long Frame Sync or Short Frame Sync mode, this pin accepts any bit clock frequency

from 64 to 5120 kHz.

DT

Data, Transmit (Pin 20)

This pin is controlled by FST and BCLKT and is high-impedance except when outputting data.

SPC

Signal Processor Clock (Pin 21)

This input accepts a clock frequency from 20.48 to 23.04 MHz that is used as the DSP engine master

clock. Internally the device divides down this clock to generate the 256 kHz clock required by the PCM

Codec. See Section 2.2.6 for additional information. (This clock may be optionally specified for higher

frequencies. Contact the factory for more information.)

DR

Data, Receive (Pin 25)

ADPCM data to be decoded are applied to this input, which operates synchronously with FSR and

BCLKR to enter the data in a serial format.

MOTOROLA

MC145540

2-13

BCLKR

Bit Clock, Receive (Pin 26)

When used in the Long Frame Sync or Short Frame Sync mode, this pin accepts any bit clock frequency

from 64 to 5120 kHz. This pin may be used for applying an external 256 kHz clock for sequencing the

analog signal processing functions of this device. This is selected by the SCP port at BR0 (b7).

FSR

Frame Sync, Receive (Pin 27)

When used in the Long Frame Sync or Short Frame Sync mode, this pin accepts an 8 kHz clock that

synchronizes the input of the serial ADPCM data at the DR pin. FSR can operate asynchronous to FST

in the Long Frame Sync or Short Frame Sync mode.

Figure 2-3. Long Frame Sync — 64 kbps PCM Data Timing

Figure 2-4. Long Frame Sync — 32 kbps ADPCM Data Timing

Figure 2-5. Long Frame Sync — 24 kbps ADPCM Data Timing

2-14

MC145540

MOTOROLA

Figure 2-6. Long Frame Sync — 16 kbps ADPCM Data Timing

Figure 2-7. Short Frame Sync — 32 kbps ADPCM Data Timing

2.4.4 Serial Control Port (SCP) Interface

The MC145540 is equipped with an industry standard Serial Control Port Interface. The Serial Control

Port (SCP) is used by an external controller, such as an M68HC05 family microcontroller, to communi-

cate with the MC145540 ADPCM Codec.

The SCP is a full-duplex four-wire interface used to pass control and status information to and from the

ADPCM Codec. The Serial Control Port Interface consists of a transmit output, a receive input, a data

clock, and an enable signal. These device pins are known as SCP Tx, SCP Rx, SCP CLK, and

SCP EN, respectively. The SCP Clock determines the rate of exchange of data in both the transmit and

receive directions, and the SCP Enable signal governs when this exchange is to take place.

The operation and configuration of the ADPCM Codec is controlled by setting the state of the control

and status registers within the MC145540 and then monitoring these control and status registers. The

control and status registers reside in sixteen 8-bit wide Byte Registers, BR0-BR15. A complete register

map and detailed register descriptions can be found in Section 3.

2.4.4.1 BYTE REGISTER OPERATIONS

The 16 Byte Registers are addressed by addressing a 4-bit byte register address (A3:A0) as shown in

Figures 2-8 and 2-9. A second 8-bit operation transfers the data word (D7:D0). Alternatively, these

registers can be accessed with a single 16-bit operation as shown in Figures 2-10 and 2-11.

PDI/RESET

Power Down Input/Reset (Pin 13)

A logic 0 applied to this input forces the device into a low power dissipation mode. A rising edge on this

pin causes power to be restored and the ADPCM RESET state (specified in the standards) to be forced.

See Section 2.2.5 for additional information.

MOTOROLA

MC145540

2-15

Figure 2-8. SCP Byte Register Write Operation Using Double 8-Bit Transfer

Figure 2-9. SCP Byte Register Read Operation Using Double 8-Bit Transfer

Figure 2-10. SCP Byte Register Write Operation Using Single 16-Bit Transfer

Figure 2-11. SCP Byte Register Read Operation Using Single 16-Bit Transfer

2-16

MC145540

MOTOROLA

SCP EN

Serial Control Port Enable Input (Pin 14)

This pin, when held low, selects the Serial Control Port (SCP) for the transfer of control and status

information into and out of the MC145540 ADPCM Codec. This pin should be held low for a total of 16

periods of the SCP CLK signal in order for information to be transferred into or out of the MC145540

ADPCM Codec. The timing relationship between SCP EN and SCP CLK is shown in Figures 2-8

through 2-11.

SCP CLK

Serial Control Port Clock Input (Pin 15)

This input to the device is used for controlling the rate of transfer of data into and out of the SCP Inter-

face. Data are clocked into the MC145540 ADPCM Codec from SCP Rx on rising edges of SCP CLK.

Data are shifted out of the device on SCP Tx on falling edges of SCP CLK. SCP CLK can be any fre-

quency from 0 to 4.096 MHz. An SCP transaction takes place when SCP EN is brought low. Note that

SCP CLK is ignored when SCP EN is high (i.e., it may be continuous or it can operate in a burst mode).

SCP Tx

Serial Control Port Transmit Output (Pin 16)

SCP Tx is used to output control and status information from the MC145540 ADPCM Codec. Data are

shifted out of SCP Tx on the falling edges of SCP CLK, most significant bit first.

SCP Rx

Serial Control Port Receive Input (Pin 17)

SCP Rx is used to input control and status information to the MC145540 ADPCM Codec. Data are

shifted into the device on rising edges of SCP CLK. SCP Rx is ignored when data are being shifted out

of SCP Tx or when SCP EN is high.

MOTOROLA

MC145540

2-17

2-18

MC145540

MOTOROLA

3.1 INTRODUCTION

This section describes all of the MC145540 ADPCM Codec control and status registers available via the

Serial Control Port (SCP) Interface. A Register Map is given in Table 3-2. Each register is then de-

scribed in detail.

3.2 REGISTER MAP

The SCP register map consists of 16 byte registers. Registers BR0–BR5 and BR7–BR10 provide

external control of and status of the part. Register BR15 holds the value of the mask number for the

particular MC145540. BR6 and BR11–BR14 are not defined and as such are presently reserved.

3.3 BIT DESCRIPTION LEGEND

Each bit described in the following sections has a read/write indicator associated with it. The read/write

indicator, shown in the lower right corner of each bit, shows what type of bit resides there. The options

are described in Table 3-1.

Table 3-1. Bit Read/Write Indicator

Indicator

Type

Description

rw

Read/Write A Read/Write bit may be written to by the external microcontroller. The

information that is read back will be the data that was written.

ro

Read Only A Read Only bit may only be read by the external microcontroller. Writing to it

has no effect unless otherwise specified in the text. When the text says that an

“ro” bit is set or cleared, this operation is performed internally by the MC145540.

ro/wo

Read Only/ A Read Only/Write Only bit may be written to by the external microcontroller.

Write Only However, the value that is read back by the external microcontroller is not

necessarily the value that was written. An “ro” bit is set and cleared by some

internal operation in the MC145540.

NOTE

“Setting” a bit corresponds to writing a one to the register and “clearing” a bit corresponds

to writing a zero to the register.

MOTOROLA

MC145540

3-1

Table 3-2. Byte Register Map

Byte

BR0

b7

b6

b5

b4

b3

b2

b1

b0

Ext

256 kHz

Clk

Mu/A Law

Select

Analog

Loopback

I/O Mode

(1)

I/O Mode

(0)

Charge

Pump

Disable

Analog

Power

Down

Digital

Power

Down

BR1

BR2

Reserved

Sidetone

Gain (2)

Sidetone

Gain (1)

Sidetone

Gain (0)

Transmit

Mute

Transmit

Gain (2)

Transmit

Gain (1)

Transmit

Gain (0)

RO

Reference

Select

AXO

Enable

PO

Disable

Receive

Filter

Disable

RO Mute

Analog

Receive

Gain (2)

Analog

Receive

Gain (1)

Analog

Receive

Gain (0)

BR3

BR4

Digital Rx

Gain

Enable

Digital Rx

Gain (6)

Digital Rx

Gain (5)

Digital Rx

Gain (4)

Digital Rx

Gain (3)

Digital Rx

Gain (2)

Digital Rx

Gain (1)

Digital Rx

Gain (0)

N.B. Time

(7)/ Tone

Param.

(7)

N.B. Time

(6)/ Tone

Param.

(6)

N.B. Time

(5)/ Tone

Param.

(5)

N.B. Time

(4)/ Tone

Param.

(4)

N.B. Time

(3)/ Tone

Param.

(3)

N.B. Time

(2)/ Tone

Param.

(2)

N.B. Time

(1)/ Tone

Param.

(1)

N.B. Time

(0)/ Tone

Param.

(0)

BR5

N.B.

Threshold

(7) /

N.B.

Threshold

(6) /

N.B.

Threshold

(5) /

N.B.

Threshold

(4) /

N.B.

Threshold

(3) /

N.B.

Threshold

(2) /

N.B.

Threshold

(1) /

N.B.

Threshold

(0) /

Address

Param.

(1)

Address

Param.

(0)

Don’t

Care

Don’t

Care

Tone

Param.

(11)

Tone

Param.

(10)

Tone

Param.

(9)

Tone

Param.

(8)

BR6

BR7

Reserved

Tone

Param.

Status

N.B.

Detect

Enable

2/6

Delay

G.726/

Motorola

16 kbps

Tone

Enable

Tone 1

Enable

Tone 2

Enable

BR8

Software

Encoder

Reset

Software

Decoder

Reset

Linear

Codec

Mode

Highpass

Disable

Reserved

BR9

Encoder

PCM (7)

Encoder

PCM (6)

Encoder

PCM (5)

Encoder

PCM (4)

Encoder

PCM (3)

Encoder

PCM (2)

Encoder

PCM (1)

Encoder

PCM (0)

BR10

D/A PCM

(7)

D/A PCM

(6)

D/A PCM

(5)

D/A PCM

(4)

D/A PCM

(3)

D/A PCM

(2)

D/A PCM

(1)

D/A PCM

(0)

BR11

BR12

BR13

BR14

BR15

Reserved

Mask (3)

Reserved

Mask (2)

Reserved

Mask (1)

Reserved

Mask (0)

3-2

MC145540

MOTOROLA

3.4 BYTE REGISTERS

3.4.1 BR0

This register contains several miscellaneous control bits. All bits are cleared on hardware reset, but are

unaffected by a software reset.

External 256 kHz Clock — This bit controls a mux that selects between an internal or external 256 kHz

signal for clocking the PCM Codec block. When this bit is cleared the mux will select the 256 kHz clock

from the internal clock generator block. When this bit is set, BCLKR is used to provide an external

256 kHz signal and the internal BCLKR signal will then be supplied from BCLKT.

Mu/A Law Select — This bit controls the compression for the encoder and the expansion for the decod-

er. Clearing this bit selects Mu-Law companding of the PCM data. Setting this bit selects A-Law com-

panding of the PCM data.

Analog Loopback — Setting this bit enables the user to perform an Analog Loopback from the receive

path to the transmit path. Internally the signal at the RO output is routed through an analog switch to the

stage of the transmit path between the output of the TG op amp and the input to the transmit trim gain

circuitry. The output of the TG op amp is disconnected from this node.

I/O Mode (1:0) — These bits are used to configure the MC145540 for different modes of operation and

test (see Table 3-3). Two of the modes select whether the device will function as a combined ADPCM

Codec (I/O Mode 00) or as a PCM Codec (I/O Mode 01). The third mode (I/O Mode 10) accommodates

independent access to the output of the PCM A/D and the input to the ADPCM encoder. This permits the

CCITT/ANSI ADPCM encoder and decoder test vectors to be run, as well as allowing for applications

where the PCM data from the A/D may need to be externally processed before being encoded by the

ADPCM encoder. The last mode (I/O Mode 11) allows the user to perform a battery test, effectively

sampling the voltage present at the V

8-bit PCM word for the voltage at V

EXT

the ADC output is the sign bit and seven magnitude bits. The sign bit is a “don’t care.” The scaling for the

pin. In this mode, the ADC is programmed to output a linear

which is intended to be read in BR9 (b7:b0). The data format for

EXT

ADC is for 6.3 V at V

signals.

equals full scale (BIN X111 1111). The ADPCM algorithm does not support dc

EXT

Charge Pump Disable — Setting this bit disables the operation of the charge pump circuitry, which

normally provides a charge pumped 5 V supply (derived from the V external supply) to the V pin,

EXT DD

which is also the power supply input for the analog blocks of the device. Disabling the charge pump will

internally connect the V

information.

pin to the V

pin. See Section 2.4.1, Power Supply Pins, for further

DD

EXT

Analog Power Down — When set, this bit forces a power down of the PCM Codec block and the

charge pump. This causes the chip to enter a mode in which all clocks to the analog blocks are halted.

This bit must be cleared before the PCM Codec block can function in its normal mode.

Digital Power Down — When set, this bit forces all clocks to the DSP Engine block to be halted. Clear-

ing this bit will force the DSP Engine to come out of power down and execute an initialization procedure

before starting to execute the ADPCM algorithm.

Table 3-3. Input/Output Modes

I/O Mode (1:0)

MC145540 Mode

ADPCM Codec

PCM Codec

0 0

0 1

1 0

1 1

CCITT Test

Battery Test

MOTOROLA

MC145540

3-3

3.4.2 BR1

This register holds the values of the gain factors used in the transmit stage of the PCM Codec block, and

in the generation of the sidetone signal that is fed back to the receive path. It also contains a bit to mute

the signal going through the PCM Codec transmit path. All bits are cleared on hardware reset.

Sidetone Gain (2:0) — These three bits encode the gain factor to be applied to the sidetone signal

before it is fed back to the receive stage of the PCM Codec block. The bit contents map to the gain

factors in Table 3-4.

Transmit Mute — When set, this bit forces the transmit low-pass filter to apply infinite attenuation to its

input signal, effectively muting the transmit path.

Transmit Trim Gain (2:0) — These three bits encode the gain factor to be applied to signals processed

by the transmit stage of the PCM Codec block. The bit contents map to the gain factors in Table 3-5.

Table 3-4. Sidetone Gains

Sidetone Gain

(2)

Sidetone Gain

(1)

Sidetone Gain

(0)

Sidetone Gain

(dB)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

–

–21.5

–18.0

–15.0

–13.5

–11.5

–10.5

–8.0

Table 3-5. Transmit Analog Trim Gain

Transmit Trim Gain Transmit Trim Gain Transmit Trim Gain Transmit Trim Gain

(2)

(1)

(0)

(dB)

0

1

+1

+2

+3

+4

+5

+6

+7

0

1

0

1

0

1

0

1

0

1

3-4

MC145540

MOTOROLA

3.4.3 BR2

The contents of this register configure the operation of the receive section of the PCM Codec block. This

register is cleared when a hardware reset is applied to the part.

RO Reference Select — This bit selects the dc bias reference voltage for the analog outputs of the

device. Clearing this bit sets the reference to its default value of V

ence voltage of the single-ended output signal available at the RO output pin to V

AG

also determines the reference level for the AXO and PO outputs.

/2. Setting this bit sets the refer-

(2.4 V). This bit

EXT

Auxiliary Receive Output Enable — Clearing this bit disables the operation of the AXO block. When

this bit is set, data coming out of the PCM Codec block will be available through the fully differential

AXO+ and AXO– output pins of the part. These outputs are high impedance when not enabled or

powered down.

Power Output Disable — Setting this bit disables the operation of the PO block. When this bit is

cleared it enables the operation of a fully differential power output stage available through PI (input),

PO+ and PO– (output). The PO block may also be disabled if the PI input is tied to V . These outputs

DD

are high impedance when disabled or powered down.

Receive Filter Disable — Setting this bit disables the operation of the receive lowpass filter and allows

the unfiltered D/A output to go to the RO or AXO driver(s). The sinX/X compensation is done in the

receive lowpass filter, which is removed with this option. Note that the Analog Receive Gain (2) and (1)

are disabled when this bit is set, bit (0) is still active for 1 dB.

RO Mute — Setting this bit grounds the input of the RO block, providing about 50 dB of attenuation to

the signal. “Full Mute” can be established using the DRx Gain function provided in BR3. The RO block

remains biased when the RO Mute bit is set in order to prevent audible “pop” when turning the block off

and on.

Receive Analog Trim Gain — These three bits encode the gain factor to be applied to signals in the

receive stage of the PCM Codec block. The bit contents map to the gain factors in Table 3-6.

Table 3-6. Receive Analog Trim Gain

Receive Analog

Trim Gain

(2)

Receive Analog

Trim Gain

(1)

Receive Analog

Trim Gain

(0)

Receive Analog

Trim Gain

(dB)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

– 1

– 2

– 3

– 4

– 5

– 6

– 7

MOTOROLA

MC145540

3-5

3.4.4 BR3

This register holds the gain factor for the scaled result of the ADPCM decoder output. A control bit to

disable the Rx gain routine is also included. This register is cleared when a hardware reset is applied to

the part. Write operations to this register are disabled when BR0 (b0) = 1 (Digital Power Down —active).

Digital Receive Gain Enable — Setting this bit prevents the DSP Engine from executing the synchro-

nous tandeming routine (CCITT/ANSI Sync function) and enables the execution of the routine that

implements the digital receive gain. When this bit is cleared the CCITT/ANSI Sync function will be

executed and the digital Rx gain will be set to unity.

Digital Receive Gain (6:0) — These bits hold the value of the linear gain factor to be applied to the

decoded digital samples processed by the DSP Engine. This value is represented in the bit fields by the

1

0

–1

–2

–3

–4

following summation: (b6) × 2 + (b5) × 2 + (b4) × 2 + (b3) × 2 + (b2) × 2 + (b1) × 2 + (b0)

–5

× 2 . Twobits(b6:b5)contributetheintegralpartofthegainandfivebits(b4:b0)contributethefraction-

al part of the gain. The field is a don’t care when the Digital Receive Gain Enable bit is cleared. Table 3-7

provides three examples of gain settings and shows the weighting of each bit as it applies to the DRx

function.

Table 3-7. Digital Receive Gain

Linear

DRx Gain

Factor

Integral Bits

Fractional Bits

b2

b6

b5

b4

–1

b3

–2

b1

–4

b0

–5

1

2

0

2

–3

2

Binary Weighting

Decimal Equivalent

Example 1

2

—

2

1

0

1

0.5

1

0.25

0.125

0.0625

0.03125

0

1

0

1

0

1

0

1

0

1

0.5

Example 2

0

1.0

Example 3

1

3.96875

3.4.5 BR4

Registers BR4 and BR5 are used for entering parameter data for the tone generation function and the

noise burst detect algorithm. The function of this register is controlled by BR5 (b7, b6) and BR7 (b7, b6,

b3). This register is cleared when a hardware reset is applied to the part. Write operations to this register

are disabled when BR0 (b0) = 1 (Digital Power Down — active).

Noise Burst Detect Time Interval (7:0) — When the MC145540 is in the Noise Burst Detect Mode,

BR7 (b6) = 1 and BR7 (b3) = 0, this register holds the time interval, in milliseconds, over which the

audio energy is integrated. The format of the data word for time is integer binary. The recommended

interval periods are from 20 ms (BIN 0001 0100) to 128 ms (BIN 1000 0000). See the descriptions for

BR5 and BR7 for more information.

Tone Generator Parameter (7:0) — In the tone generation mode, BR7 (b3) = 1, this register is used

to enter the eight LSBs of the tone generator frequency coefficient, or the tone attenuation factor. The

MSBs of the tone generator coefficient or the tone attenuation factor are specified in BR5 (b3:b0).

BR5 (b6) indicates whether the data is a tone coefficient or a tone attenuation factor. Bit BR5 (b7)

indicates whether the data entered is for tone generator 1 or tone generator 2. See the descriptions for

BR5 and BR7 for more information.

3-6

MC145540

MOTOROLA

3.4.6 BR5

Registers BR4 and BR5 are used for entering parameter data for the tone generation function and the

noise burst detect algorithm. This register is cleared when a hardware reset is applied to the part. Write

operations to this register are disabled when BR0 (b0) = 1 (Digital Power Down — active).

Noise Burst Detect Energy Threshold (7:0) — In the Noise Burst Detect Mode, BR7 (b6) = 1 and

BR7 (b3) = 0, this register is used to enter the audio energy threshold value for the noise burst detect

algorithm. The magnitude of the 13-bit decoded linear words are summed in increments of eight sam-

ples (1 ms of samples) to obtain a 24-bit value. The number of milliseconds is the value in BR4. When

the number of milliseconds has been completed, the most significant 8 bits of the 24-bit total are

compared with the value of BR5 to determine if there was more energy in the reconstructed ADPCM

codes than normal voice. If the threshold (BR5) is exceeded, then BR7 (b6) will be set. After this

decision is made the 24-bit total is cleared and the process starts over. For a change in the time interval

(BR4), the threshold value (BR5) must be changed proportionally, to detect the same amount of energy

in the received ADPCM. The microcontroller must poll BR7 (b6) and may attenuate the receive gain or

mute the audio output if this bit is set. See BR7 description for more information.

Tone Generator Address Parameter (1:0) — In tone generation mode, BR7 (b3) = 1, this register is

used to enter the four MSBs of the tone frequency coefficient, and the tone attenuation factor. BR5 (b6)

indicates whether the data is a tone frequency coefficient or a tone attenuation factor. Bit BR5 (b7)

indicates whether the data entered is for tone generator 1 or tone generator 2. Setting BR5 (b7:b6)

results in the operation shown in Table 3-8.

Table 3-8. Tone Generator Address Parameters

b7

b6

Resulting Operation

Tone Generator

Tone Parameter

0

1

0

1

0

1

Tone Generator 1, Frequency Coefficient

Tone Generator 1, Tone Attenuation Factor

Tone Generator 2, Frequency Coefficient

Tone Generator 2, Tone Attenuation Factor

MOTOROLA

MC145540

3-7

3.4.6 BR5 (continued)

Tone Generator Frequency Parameter (11:0) — These bits hold the value used to determine the

frequency for tone generator 1 or tone generator 2. This value must be a 12-bit (2’s complement)

approximation of cos(2πf T), where f is the frequency of the tone and T is the period between samples

o

(125 µs). The format of the data for the tone generator frequency coefficient is a 12-bit 2’s complement

number with bits (10:0) being the fractional part and bit (11) being the sign information. These frequency

coefficients are limited to values between negative 1 (BIN 1.000 0000 0000 or HEX 08 00) and almost

positive 1 (BIN 0.111 1111 1111 or HEX 07 FF). Table 3-9 shows the values that must be used to

synthesize frequencies used in DTMF applications.

Table 3-9. Tone Generator Coefficients for DTMF

Frequency Parameter (Hex)

BR5

06

05

04

03

02

BR4

D5

95

Tone Frequency (Hz)

697

770

852

46

941

EA

A8

FC

32

1209

1336

1477

1633

46

Tone Generator Attenuation Parameter (11:0) — The attenuation parameter will determine the scal-

ing on the amplitude of tones generated. The peak amplitude of the tones before attenuation is 13-bit

linear full scale, which is full scale for the DAC output. In DTMF applications, this attenuation feature

allows for the user to vary the twist of one tone with respect to the other, in order to comply with

standard EIA-470. The attenuation parameter will be used to scale the amplitude of a sample produced

by tone generator 1 or tone generator 2 before it is sent to the receive gain function in preparation for

companding and conversion to an analog signal. The format of the data for the tone generator attenua-

tion parameter is a 12-bit 2’s complement number with bits (10:0) being the fractional part and bit (11)

being the sign information. These attenuation parameters should be limited to positive values between

zero (BIN 0.000 0000 0000 or HEX 00 00) and almost positive 1 (BIN 0.111 1111 1111 or HEX 07 FF).

Note that this scaling will always result in the attenuation of the signal.

3.4.7 BR6

This register is reserved. The state of the bits BR6 (b7:b0) is inconsequential.

3-8

MC145540

MOTOROLA

3.4.8 BR7

This register contains the bits that enable the operation of both tone generators and the noise burst

detect algorithm. BR7 also includes registers that determine whether two or six frame delay is to be

used and which 16 kbps algorithm is to be selected. This register is cleared when a hardware reset

is applied to the part ( i.e., PDI/RESET = 0). Write operations to this register are disabled when

BR0 (b0) = 1 (Digital Power Down — active).

Tone Parameter Status — This read-only bit allows the external microcontroller to know when the data

written to BR4 and BR5 has been accepted by the internal CPU. After writing to registers BR4 and BR5

(in this specific order) the external microcontroller must poll this bit and look for a logic 0 before writing

again to BR4 and BR5. After writing to BR5 this bit will be set indicating to the internal CPU that a valid

parameter was entered. The internal CPU will read the contents of BR4/BR5 before resetting this bit.

See BR4 and BR5 for more information.

Noise Burst Detect Enable — This bit is a ro/wo (read only/write only) bit. This bit may be written to by

the external microcontroller; however, the value that is read back by the external microcontroller is not

necessarily the value previously written. Setting this bit will signal the internal CPU to start running the

noise burst algorithm. If the noise burst detect algorithm finds that the received signal exceeds the

threshold value, it will write to a register that can be read by polling this bit. This allows the possibility to

temporarily mute or attenuate the receive path to prevent the noise burst from disturbing the listener.

See BR4 and BR5 for more information.

2/6 Delay — This bit controls the amount of delay from an ADPCM rate change request at the encoder

input register to the moment the correct output is observed at the DT output pin. When this bit is cleared

there will be a two frame delay; if this bit is set a six frame delay will be applied.

G.726 / Motorola 16 kbps — This bit determines the coding scheme used when operating the part in a

16 kbps mode. Clearing this bit selects the G.726 defined 16 kbps coding algorithm. Setting this bit

selects a Motorola Proprietary ADPCM coding algorithm, which is the 16 kbps algorithm used in the

MC145532 ADPCM Transcoder.

Tone Enable — When this bit is set it tells this device to do four specific things. The first is to execute the

tone generator routine instead of the ADPCM decoder routine. This disables the noise burst detect

algorithm. The second is to select BR4 and BR5 for use in programing the frequency and attenuation

parameters for the tone generators. The third is to route the tone generator output to the input of the

receive digital gain control routine for analog reconstruction and use at the receive analog outputs of the

device. The fourth is to route the tone generator output to the input of the ADPCM encoder for output at

the DT pin. When this bit is low, coefficients for frequency and attenuation are lost.

Reserved — This bit is reserved.

Tone 1 Enable — This bit must be set in order to enable tone 1. This allows the digital samples from

tone generator 1 to be added to the 13-bit linear word at the output of the tone generator function for use

by the rest of the device. This bit must be taken low to reprogram the frequency of tone 1.

Tone 2 Enable — This bit must be set in order to enable tone 2. This allows the digital samples from

tone generator 2 to be added to the 13-bit linear word at the output of the tone generator function for use

by the rest of the device. This bit must be taken low to reprogram the frequency of tone 2.

MOTOROLA

MC145540

3-9

3.4.9 BR8

This register contains miscellaneous control bits. This register is cleared when a hardware reset is

applied to the part. Write operations to this register will be disabled when BR0 (b0) = 1 (Digital Power

Down — active).

Software Encoder Reset — When set by the SCP control port, this bit forces the MC145540 to execute

an initialization procedure every time it receives an interrupt signal from the encoder I/O registers. This

bit is cleared for normal operation.

Software Decoder Reset — When set by the SCP control port, this bit forces the MC145540 to execute

an initialization procedure every time it receives an interrupt signal from the decoder I/O registers. This

bit is cleared for normal operation.

Linear Codec Mode — Setting this bit will force the PCM Codec block to operate as an 8-bit Linear

Codec. The A/D and D/A will be changed from Mu-Law or A-Law to 8-bit linear.

High-Pass Disable — Setting this bit disables the operation of the transmit high-pass filter. This ex-

tends the frequency response of the transmit analog signal path down to dc, which can result in higher

quantization distortion if a dc offset voltage is present at the input to the encoder.

CAUTION

Reserved bits b3, b2, b1, and b0 must be set to zero at all times.

3.4.10 BR9

The read-only (ro) section of this SCP register allows the external microcontroller to have access to the

PCM word generated after an A/D conversion. When the I/O MODE (1:0) field in BR0 (b4:b3) is set to a

logic ‘10’ it will allow the external microcontroller to enter PCM data to the input of the ADPCM encoder

using the write-only (wo) section of this SCP register. In this mode, external processing may be done

on the A/D PCM word before it is encoded into an ADPCM word.

3.4.11 BR10

This SCP register allows the external microcontroller to have access to the PCM word generated by the

ADPCM decoder function. This PCM word is the same data that is sent to the PCM Codec to execute a

D/A conversion.

3-10

MC145540

MOTOROLA

3.4.12 BR11

This register is reserved. The state of the bits BR11 (b7:b0) is inconsequential.

3.4.13 BR12

This register is reserved. The state of the bits BR12 (b7:b0) is inconsequential.

3.4.14 BR13

This register is reserved. The state of the bits BR13 (b7:b0) is inconsequential.

3.4.15 BR14

This register is reserved. The state of the bits BR14 (b7:b0) is inconsequential.

3.4.16 BR15

This register contains the revision number of the particular ADPCM Codec device.

Mask 3:0 — These bits allow for an electronic determination of the revision number of the MC145540

ADPCM Codec manufacturing mask set.

MOTOROLA

MC145540

3-11

3-12

MC145540

MOTOROLA

4.1 MAXIMUM RATINGS (Voltages Referenced to V Pin)

SS

Rating

DC Supply Voltage

Symbol

, V

Value

Unit

V

–0.5 to 6

EXT DD

Voltage on Any Analog Input or Output Pin

V

– 0.3 to

V

SS

+ 0.3

DD

Voltage on Any Digital Input or Output Pin

V

– 0.3 to

+ 0.3

V

SS

EXT

Operating Temperature Range

Storage Temperature Range

T

–40 to +85

°C

A

T

stg

–85 to +150

4.2 POWER SUPPLY (T = –40 to +85°C, SPC = 20.48 MHz)

A

Characteristics

Min

Typ

Max

Unit

V

EXT

= V

= 5.0 V, Charge Pump Off

DD

V

EXT

= V

DC Supply Voltage

DD

4.75

5.0

5.25

V

Active Power Dissipation (V

= 5.0 V)

mW

EXT

(No Load, PI

V

DD

V

DD

– 0.5 V, AXO+ and AXO– off)

– 1.5 V, AXO+ and AXO– on)

—

80

85

95

100

Power Down Dissipation

(V for logic levels must be

—

2

20

mW

3.0 V, SPC off)

IH

V

EXT

= 3.0 V, Charge Pump On Supplying V

DD

V

EXT

DC Supply Voltage

2.7

3.0

5.25

V

Active Power Dissipation (V

= 3.0 V)

mW

EXT

(No Load, PI

V

DD

V

DD

– 0.5 V, AXO+ and AXO– off)

– 1.5 V, AXO+ and AXO– on)

—

55

60

70

75

Power Down Dissipation (SPC off)

—

0.15

2.5

mW

MOTOROLA

MC145540

4-1

4.3 DIGITAL LEVELS (V

= 2.7 to 5.25 V, V

SS

= 0 V, T = –40 to +85°C)

EXT

A

Characteristics

Symbol

Min

Max

Unit

Input Low Voltage

Input High Voltage

(FSR, FST, BCLKR, BCLKT, DR, SCP Rx,

SCP CLK, SCP EN)

V

—

0.5

V

IL

(FSR, FST, BCLKR, BCLKT, DR, SCP Rx,

SCP CLK, SCP EN)

V

IH

V

– 0.5

—

V

EXT

Input Low Voltage

Input High Voltage

Output Low Voltage (I

(SPC)

V

—

0.5

—

V

IL

V

IH

V

– 0.5

EXT

= 1.6 mA)

(DT)

V

OL

—

0.4

—

V

OL

Output High Voltage (I

= – 1.6 mA)

V

I

V

– 0.5

EXT

V

OH

Input Low Current (V

V

in

V

)

I

IL

–10

+10

µA

SS

Input High Current (V

EXT

V

in

V

)

EXT

SS

Output Current in High Impedance State

(V DT, SCP Tx

IH

(DT, SCP Tx)

I

OZ

V

)

SS

Output Low Voltage (I

EXT

= 0.8 mA)

(SCP Tx)

V

OL

—

0.4

—

V

OL

Output High Voltage (I

Input Capacitance

= – 0.8 mA)

V

OH

V

– 0.5

OH

EXT

(FSR, FST, BCLKR, BCLKT, DR, SCP Rx,

SCP CLK, SCP EN)

C

—

10

pF

in

Output Capacitance

(DT, SCP Tx)

C

15

pF

out

4.4 ANALOG ELECTRICAL CHARACTERISTICS

(V

= V

= 5 V ±5%; Charge Pump Off, V = 0 V, BR2 (b7) = 1, T = –40 to +85°C)

SS A

EXT

DD

Characteristics

Min

—

1.0

—

80

—

0

Typ

±0.1

1.0

—

Max

±1.0

—

Unit

µA

Input Current

TI+, TI–

AC Input Impedance to V

Input Capacitance

(1 kHz)

MΩ

pF

AG

TI+, TI–

10

Input Offset Voltage of TG Op Amp

Input Common Mode Voltage Range

Input Common Mode Rejection Ratio

TI+, TI–

—

±5

mV

V

TI+, TI–

—

V

– 2.0

DD

TI+, TI–

60

—

dB

Gain Bandwidth Product (10 kHz, R

10 kΩ)

TG Op Amp

3000

95

kHz

dB

L

DC Open Loop Gain (R

10 kΩ)

—

L

Equivalent Input Noise (C-Mess) Between TI+ and TI– at TG

–30

—

dBrnC

pF

Output Load Capacitance

Output Voltage Range

TG Op Amp

100

TG

V

(R = 10 kΩ to V

)

0.5

1.0

—

V

DD

V

DD

– 0.5

– 1.0

L

AG

(R = 2 kΩ to V

)

L

AG

Output Current

TG, RO

±1.0

—

mA

(0.5 V

V

out

V

– 0.5 V)

DD

Output Load Resistance to V

AG

TG or RO

RO

2

—

0

—

1

—

kΩ

Ω

Output Impedance (0 to 3.4 kHz)

Output Load Capacitance

RO

—

±1

2.4

±5

500

±25

2.6

—

pF

DC Output Offset Voltage of RO referenced to V

AG

—

2.1

±2

mV

V

Output Voltage referenced to V

SS

Output Current with less than 40 mV change in Output Voltage

AG

V

AG

mA

dBC

Power Supply Rejection Ratio

(0 to 100 kHz @ 100 mVrms applied to V

C-Message Weighting. All analog signals

Transmit

Receive

—

50

40

75

—

.

DD

referenced to V

AG

pin.)

4-2

MC145540

MOTOROLA

4.5 POWER DRIVERS PI, PO+, PO–, AXO+, AXO–

(V

= V

= 5 V ±5%; Charge Pump Off, V = 0 V, BR2 (b7) = 1, T = –40 to +85°C)

SS A

EXT

DD

Characteristics

Min

Typ

Max

Unit

Input Current

(V – 0.5 V

PI

—

±0.05

±1.0

µA

PI

V

+ 0.5 V)

AG

Input Resistance

(V – 0.5 V

AG

10

—

MΩ

V

AG

+ 0.5 V)

AG

Input Offset Voltage PI relative to V

AG

—

±25

±60

mV

Output Offset Voltage of AXO+ relative to AXO–

±5

Output Offset Voltage of AXO+ or AXO– relative to V

±50

±150

±175

AG

Output Offset Voltage of PO+ relative to PO–

(Inverted Unity Gain for PO–)

Output Offset Voltage for PO+ or PO– relative to V

(Inverted Unity Gain for PO–)

—

±30

±120

mV

AG

Output Current (V

+ 0.7 V

PO+, PO–, AXO+, AXO–

V

– 0.7 V)

PO–

±10

—

1

—

mA

SS

DD

PO+, PO–, AXO+ or AXO– Output Resistance

(Inverted Unity Gain for PO–)

—

Ω

Gain Bandwidth Product (10 kHz, Open Loop)

—

0

1000

—

kHz

pF

Load Capacitance PO+, PO–, AXO+ or AXO– to V , or from PO+

AG

(AXO+) to PO– (AXO–)

1000

Gain of PO+ relative to PO–

–0.2

40

0

+0.2

—

dB

Total Signal to Distortion at PO+ (AXO+) and PO– (AXO–) with a

50

dBC

300 Ω differential load

Power Supply Rejection Ratio

(0 to 25 kHz @ 100 mVrms applied to V

0 to 4 kHz

4 to 25 kHz

40

—

55

40

—

dB

,

EXT

PO– connected to PI. Differential or measured referenced

to V pin.)

AG

NOTE: DC reference voltage for PO+, PO–, AXO+, AXO–, and RO is V

AG

.

MOTOROLA

MC145540

4-3

4.6 ANALOG ELECTRICAL CHARACTERISTICS

(V

= 3.0 V ±10%; Charge Pump On Supplying V , V = 0 V, BR2 (b7) = 0, T = –40 to +85°C)

DD SS A

EXT

Characteristics

Min

—

1.0

—

80

—

0

Typ

±0.01

1.0

—

Max

±1.0

—

Unit

µA

Input Current

TI+, TI–

AC Input Impedance to V

(1 kHz)

MΩ

pF

AG

Input Capacitance

TI+, TI–

10

Input Offset Voltage of TG Op Amp

Input Common Mode Voltage Range

Input Common Mode Rejection Ratio

TI+, TI–

—

±5

mV

V

TI+, TI–

—

V

– 2.0

DD

TI+, TI–

60

—

dB

Gain Bandwidth Product (10 kHz, R

10 kΩ)

TG Op Amp

3000

95

kHz

dB

L

DC Open Loop Gain (R

10 kΩ)

—

L

Equivalent Input Noise (C-Mess) Between TI+ and TI– at TG

–30

—

dBrnC

pF

Output Load Capacitance

Output Voltage Range

TG Op Amp

100

TG

V

(R = 10 kΩ to V

AG

L

)

0.5

1.0

—

V

DD

V

DD

– 0.5

– 1.0

L

(R = 2 kΩ to V

AG

)

Output Current (0.5 V

V

– 0.5 V)

DD

TG, RO

TG or RO

RO

±1.0

2

—

1

—

mA

kΩ

Ω

out

Output Load Resistance to V

—

AG

Output Impedance (0 to 3.4 kHz)

Output Load Capacitance

DC Output Voltage of RO

—

0

RO

—

500

—

pF

—

2.1

—

V

/2

mV

V

EXT

V

AG

Output Voltage referenced to V

2.4

2.6

—

SS

V

AG

Output Current with less than 40 mV change in Output Voltage

±1

mA

dBC

Power Supply Rejection Ratio

(0 to 100 kHz @ 100 mVrms applied to V

C-Message Weighting. All analog signals

Transmit

Receive

—

40

50

—

.

DD

referenced to V

AG

pin.)

NOTE: To prevent the RO output from distorting during the reconstruction of large analog amplitudes, the receive signal should

be attenuated by 6 dB for 2.7 V operation.

4-4

MC145540

MOTOROLA

4.7 POWER DRIVERS PI, PO+, PO–, AXO+, AXO–

(V

= 3.0 V = ±10%; Charge Pump On Supplying V , V = 0 V, BR2 (b7) = 0, T = –40 to +85°C)

DD SS A

EXT

Characteristics

Min

Typ

Max

Unit

Input Current

(V /2) – 0.5 V

PI

—

±0.05

±1.0

µA

PI

(V

/2) + 0.5 V

EXT

Input Resistance

(V /2) – 0.5 V

EXT

10

—

MΩ

PI

(V

/2) + 0.5 V

EXT

Input Offset Voltage PI relative to (V

/2)

—

±25

±55

—

mV

V

EXT

Output Offset Voltage of AXO+ relative to AXO–

DC Output Voltage of AXO+ or AXO–

±5

V

/2

EXT

Output Offset Voltage of PO+ relative to PO– (Inverted Unity Gain for

PO–)

±5

±120

mV

DC Output Voltage of PO+ or PO–

—

V

/2

—

V

EXT

Output Current (V

0.5 V)

+ 0.5 V

PO+, PO–, AXO+, AXO–

V

–

EXT

±3.5

mA

SS

PO+, PO–, AXO+ or AXO– Output Resistance (Inverted Unity Gain for

PO–)

—

1

—

Ω

Gain Bandwidth Product @ 10 kHz (Open Loop)

Load Capacitance PO+ to PO–, AXO+ to AXO–

Gain of PO+ (AXO+) relative to PO– (AXO–)

PO–

—

0

1000

—

1000

+0.2

—

kHz

pF

–0.2

40

0

dB

Total Signal to Distortion at PO+ (AXO+) and PO– (AXO–) with a

50

dBC

300 Ω differential load

Power Supply Rejection Ratio

0 to 4 kHz

4 to 25 kHz

30

—

45

40

—

dB

(0 to 25 kHz @ 100 mVrms applied to V

PO– connected to PI. Differentially measured.)

.

EXT

NOTE: DC reference voltage for AXO+, AXO–, PO+, PO–, and RO is V

/2.

EXT

MOTOROLA

MC145540

4-5

4.8 ANALOG TRANSMISSION PERFORMANCE

(V

= 5 V ±5% Powered by the Charge Pump or Externally; V

SS

= 0 V; All Analog Signals Referenced to V ;

AG

DD

0 dBm0 = 0.775 Vrms = + 0 dBm @ 600 Ω; 64 kbps PCM; FST = FSR = 8 kHz; BCLKT = BCLKR = 2.048 MHz;

SPC = 20.48 MHz Synchronous Operation; T = –40 to +85°C; Unless Otherwise Noted)

A

End to End

A/D

D/A

Characteristics

Absolute Gain (0 dBm0 @ 1.02 kHz, T = 25°C)

Min

Max

Min

Max

Min

Max

Unit

dB

A

V

DD

= 5.0 V

—

–0.25

0.25

–0.25

0.25

Absolute Gain Variation with Temperature

dB

0° to + 70°C

–40° to + 85°C

—

± 0.03

± 0.05

—

±0.03

±0.05

Absolute Gain Variation with Power Supply

= 5 V, ± 5%

dB

V

DD

—

± 0.03

—

±0.04

Gain vs Level Tone

(Mu-Law, Relative to

– 10 dBm0, 1.02 kHz)

+3 to –40 dBm0

–40 to –50 dBm0

–50 to –55 dBm0

—

–0.3

–1.0

–1.6

+ 0.3

+ 1.0

+ 1.6

–0.2

–0.4

–0.8

+0.2

+0.4

+0.8

Gain vs Level Pseudo Noise, CCITT G.714

dB

dBC

dB

(A-Law relative to

– 10 dBm0)

–10 to –40 dBm0

–40 to –50 dBm0

–50 to –55 dBm0

—

–0.25

–0.60

–1.0

+ 0.25

+ 0.30

+ 0.45

–0.25

–0.30

–0.45

+0.25

+0.30

+0.45

Total Distortion, 1.02 kHz Tone

(Mu-Law,

C-Message Weighting)

+3 dBm0

0 to –30 dBm0

–40 dBm0

33

35

28

24

—

34

36

29

25

—

34

36

30

25

—

–45 dBm0

Total Distortion Pseudo Noise, CCITT G.714 (A-Law)

–3 dBm0

–6 to –27 dBm0

–34 dBm0

27.5

35.0

33.1

28.2

13.2

—

28

—

28.5

36.0

34.2

30.0

15.0

—

35.5

33.5

28.5

13.5

–40 dBm0

–55 dBm0

Idle Channel Noise (for End-to-End and A/D, Note 1)

Mu-Law, C-Message Weighted

—

19

–70

—

19

– 70

—

11

–78

dBrnC0

dBm0p

A-Law, Psophometric Weighted

Frequency Response

(Relative to 1.02 kHz @ 0 dBm0)

15 Hz

50 Hz

60 Hz

—

–1.0

–0.20

–0.35

–0.8

—

– 40

– 30

– 26

– 0.4

+ 0.15

0.0

–0.5

–0.20

–0.35

–0.8

—

0

dB

200 Hz

300 to 3000 Hz

3300 Hz

0

+0.15

0

–14

–30

3400 Hz

4000 Hz

4600 to 100,000 Hz

– 14

– 32

—

Inband Spurious (1.02 kHz @ 0 dBm0,

dB

Transmit and Receive)

300 to 3000 Hz

—

–48

—

– 48

—

–48

Out-of-Band Spurious at RO+

(300 to 3400 Hz @ 0 dBm0 in)

4600 to 7600 Hz

7600 to 8400 Hz

8400 to 100,000 Hz

—

–30

–40

–30

—

–30

–40

–30

Idle Channel Noise Selective @ 8 kHz,

—

–70

—

–70

dBm0

Input = V , 30 Hz Bandwidth

AG

Absolute Delay @ 1600 Hz

—

440

—

330

µs

NOTE: 1. Extrapolated from a 1020 Hz @ –50 dBm0 distortion measurement to correct for encoder enhancement.

(continued)

4-6

MC145540

MOTOROLA

4.8 ANALOG TRANSMISSION PERFORMANCE (continued)

End to End

Min Max

A/D

D/A

Characteristics

Min

Max

Min

Max

Unit

Group Delay Referenced to 1600 Hz

µs

500 to 600 Hz

600 to 800 Hz

800 to 1000 Hz

1000 to 1600 Hz

1600 to 2600 Hz

2600 to 2800 Hz

2800 to 3000 Hz

—

210

130

70

35

70

–40

–30

—

85

—

95

145

—

110

175

Crosstalk of 1020 Hz @ 0 dBm0 from A/D or D/A

(Note 2)

—

–70

–41

—

–70

–41

dB

Intermodulation Distortion of two Frequencies of

Amplitudes – 4 to – 21 dBm0 from the range

300 to 3400 Hz

—

–41

—

NOTE: 2. Selectively measured while stimulated with 2667 Hz @ – 50 dBm0.

4.9 DIGITAL SWITCHING CHARACTERISTICS, LONG FRAME SYNC AND

SHORT FRAME SYNC

(V

= +2.7 V to +5.25 V, V

SS

= 0 V, All Digital Signals Referenced to V , T = –40 to +85°C,

SS

EXT

A

C = 150 pF, Unless Otherwise Noted)

L

Ref #

Characteristics

Min

Typ

20.48

50

Max

23.12

55

Unit

MHz

%

Signal Processing Clock (SPC) Frequency (see Note)

Signal Processing Clock (SPC) Duty Cycle

20.40

45

—

1

2, 3

4

Master Clock (MCLK) Frequency for External 256 kHz applied at BCLKR pin

Master Clock (MCLK) Duty Cycle for External 256 kHz applied at BCLKR pin

Rise Time for All Digital Signals

256

—

kHz

%

45

—

55

—

50

ns

5

Fall Time for All Digital Signals

—

50

ns

6

Bit Clock Data Rate for BCLKT or BCLKR

64

50

20

80

20

50

—

5120

—

kHz

ns

7

Minimum Pulse Width High for BCLKT or BCLKR

Minimum Pulse Width Low for BCLKT or BCLKR

Hold Time for BCLKT (BCLKR) Low to FST (FSR) High

Setup Time for FST (FSR) High to BCLKT (BCLKR) Low

Setup Time for DR Valid to BCLKR Low

—

8

—

ns

9

—

ns

10

11

12

—

ns

—

ns

Hold Time from BCLKR Low to DR Invalid

—

ns

LONG FRAME SPECIFIC TIMING

15

16

17

18

19

Hold Time from 2nd Period of BCLKT (BCLKR) Low to FST (FSR) Low

Delay Time from FST or BCLKT, Whichever is Later, to DT for Valid b0 Data

Delay Time from BCLKT High to DT for Valid b1–b7

Delay Time from BCLKT Low to DT Output High Impedance

Minimum Pulse Width Low for FST or FSR

50

—

60

—

ns

—

10

100

SHORT FRAME SPECIFIC TIMING

20

21

22

23

Hold Time from BCLKT (BCLKR) Low to FST (FSR) Low

Setup Time from FST (FSR) Low to b0 Period of BCLKT (BCLKR) Low

Delay Time from BCLKT High to DT Data Valid

50

10

—

60

ns

Delay Time from the 4th BCLKT Low to DT Output High Impedance

NOTE: See section 2.2.6 for more details.

MOTOROLA

MC145540

4-7

4.10 DIGITAL SWITCHING CHARACTERISTICS — SERIAL CONTROL PORT (SCP)

(V

= +2.7 V to +5.25 V, V

SS

= 0 V, All Digital Signals Referenced to V , T = –40 to +85°C,

SS

EXT

A

C = 150 pF, Unless Otherwise Noted; Note 1)

L

Ref #

25

26

27

28

29

30

31

32

33

34

35

Characteristics

Min

40

30

—

Max

—

Unit

ns

SCP CLK Rising Edge Before SCP EN Falling Edge

SCP EN Falling Edge Before SCP CLK Rising Edge

SCP Rx Data Valid Before SCP CLK Rising Edge

SCP Rx Data Valid After Rising Edge of SCP CLK

SCP Clock Frequency

—

ns

—

ns

—

ns

4.1

—

MHz

ns

SCP Clock Width Low

50

—

SCP Clock Width High

—

ns

SCP CLK Rising Edge Before SCP EN Rising Edge (Note 2)

SCP EN Rising Edge Before SCP CLK Rising Edge (Note 2)

—

ns

—

ns

Ninth SCP CLK Falling Edge to SCP Tx Low-Impedance for Read Operations

40

ns

SCP CLK Falling Edge (While SCP EN is Low) to SCP Tx Data Valid for Read

Operations

—

ns

36

37

SCP EN Falling Edge to SCP Tx Active for Read Operations with 8-Bit Transfers

SCP EN Rising Edge to SCP Tx High-Impedance

0

50

30

ns

—

NOTES: 1. Measurements are made from the point at which they achieve their guaranteed minimum or maximum logic levels.

2. SCP EN must rise between the rising edge of the eighth SCP CLK and the rising edge of the ninth SCP CLK for

an 8-bit access or the access will be ignored. For a 16-bit access, SCP EN must rise between the rising edge of

the sixteenth SCP CLK and the rising edge of the seventeenth SCP CLK or the access will be ignored.

4-10

MC145540

MOTOROLA

4-12

MC145540

MOTOROLA

MC145540P

28-LEAD PLASTIC DIP

CASE 710-02

28

1

15

14

B

L

A

C

N

J

K

H

G

M

F

D

°

Figure 5-1. Plastic DIP Dimensions

MC145540DW

28-LEAD WIDE BODY PLASTIC SOG

CASE 751F-03

°

Figure 5-2. Plastic SOG Dimensions

MC145540

MOTOROLA

5-1

5-2

MC145540

MOTOROLA

Ω

µ

Ω

•

µ

Ω

µ

Ω

µ

Ω

Figure 6-1. MC145540 Handset Application

MOTOROLA

MC145540

6-1

Ω

•

Ω

µ

Ω

µ

Ω

Figure 6-2. MC145540 Transformer Application

Ω

•

Ω

µ

Ω

µ

Ω

Figure 6-3. MC145540 Transformer + Speaker Application

MC145540

6-2

MOTOROLA

7.1 INTRODUCTION

The MC145540 is manufactured using high speed CMOS VLSI technology to implement the complex

analog and digital signal processing functions of an ADPCM Codec. The fully differential analog circuit

design techniques used for this device result in superior performance for the switched capacitor filters,

the analog-to-digital converter (ADC) and the digital-to-analog converter (DAC). Special attention was

given to the design of this device to reduce the sensitivities to noise, including power supply rejection

and susceptibility to radio frequency noise. This special attention to design includes a fifth order low-

pass filter, followed by a third order high-pass filter whose output is converted to a digital signal with

greater than 75 dB of dynamic range, all operating on a single 5 V power supply. This results in a Mu-

Law LSB size for small audio signals of about 386 mV. The typical idle channel noise level of this device

is less than one LSB. In addition to the dynamic range of the codec/filter function of this device, the input

gain-setting op amp has the capability of greater than 30 dB gain intended for an electret microphone

interface.

7.2 PC BOARD MOUNTING

It is recommended that the device be soldered to the PC board for optimum noise performance. If the

device is to be used in a socket, it should be placed in a low parasitic pin inductance (generally low

profile) socket.

7.3 POWER SUPPLY, GROUND, AND NOISE CONSIDERATIONS

This device is intended to be used in switching applications that often require plugging the PC board

into a rack with power applied. This is known as “hot-rack insertion.” In these applications care should

be taken to limit the voltage on any pin from going positive of the V

pins or negative of the V pins.

DD

SS

One method is to extend the ground and power contacts of the PCB connector. The device has input

protection on all pins and may source or sink a limited amount of current without damage. Current

limiting may be accomplished by series resistors between the signal pins and the connector contacts.

The most important considerations for PCB layout deal with noise. This includes noise on the power

supply, noise generated by the digital circuitry on the device, and cross coupling digital or radio frequen-

cy signals into the audio signals of this device. The best way to prevent noise is to:

1. Keep digital signals as far away from audio signals as possible.

2. Keep radio frequency signals as far away from the audio signals as possible.

3. Use short, low inductance traces for the audio circuitry to reduce inductive, capacitive, and radio

frequency noise sensitivities.

4. Use short, low inductance traces for digital and RF circuitry to reduce inductive, capacitive, and

radio frequency radiated noise.

5. Connect bypass capacitors from the V , V

DD DSP

and V

AG

pins to V with minimal trace length.

SS

Ceramic monolithic capacitors of about 0.1 µF are acceptable to decouple the device from its

own noise. The V capacitor should be about 1.0 µF when using the charge pump. This larger

DD

value of capacitance is needed to operate as a filter for the current pulses from the charge pump

and as a current reservoir for powering the V

circuitry while the transfer capacitor, C1 is being

DD

MOTOROLA

MC145540

7-1

charged. C1 handles relatively large current pulses and should have short traces from the device.

The V decoupling capacitor helps supply the instantaneous currents of the digital signal pro-

DSP

cessor circuitry in addition to decoupling the noise that may be generated by other sections of

the device or other circuitry on the power supply. The V decoupling capacitor helps to reduce

AG

at frequencies above the bandwidth of the V

which reduces the susceptibility to RF noise.

the impedance of the V

pin to V

generator,

AG

SS

AG

6. Use a short, wide, low inductance trace to connect the V

ground pin to the power supply ground.

SS

The V

pin is the digital ground and the most negative power supply pin for the analog circuitry.

SS

All analog signal processing is referenced to the V

pin, but because digital and RF circuitry

AG

will probably be powered by this same ground, care must be taken to minimize high frequency

noise in the V trace. Depending on the application, a double sided PCB with a V ground

SS

pins together would be a good grounding meth-

pins

plane connecting all of the digital and analog V

SS

od. A multilayer PC board with a ground plane connecting all of the digital and analog V

SS

together would be the optimal ground configuration. These methods will result in the lowest resis-

tance and the lowest inductance in the ground circuit. This is important to reduce voltage spikes

in the ground circuit resulting from the high speed digital current spikes. The magnitude of digitally

induced voltage spikes may be hundreds of times larger than the analog signal the device is

required to digitize.

7. Use a short, wide, low inductance trace to connect the V

EXT

power supply pin to the positive

power supply. Depending on the application, a double sided PCB with bypass capacitors to the

ground plane, as described above, may complete the low impedance coupling for the power

V

SS

supply. For a multilayer PC board with a power plane, connecting all of the positive power supply

pins to the power plane would be the optimal power distribution method. The integrated circuit

layout and packaging considerations for the positive power supply circuit are essentially the same

as for the V

ground circuit.

SS

8. The V

AG

pin is the reference for all analog signal processing. In some applications the audio

signal to be digitized may be referenced to the V

ground. To reduce the susceptibility to noise

SS

at the input of the ADC section, the three terminal op amp may be used in a differential to single

ended circuit to provide level conversion from the V ground to the V ground with noise can-

SS AG

cellation. The op amp may be used for more than 30 dB of gain in microphone interface circuits,

which will require a compact layout with minimum trace lengths as well as isolation from noise

sources. It is recommended that the layout be as symmetrical as possible to avoid any imbalances

that would reduce the noise cancelling benefits of this differential op amp circuit. Refer to the

application schematics for examples of this circuitry.

9. The MC145540 is fabricated with advanced high speed CMOS technology that is capable of

responding to noise pulses on the clock pins of 1 ns or less. It should be noted that noise pulses

of such short duration may not be seen with oscilloscopes that have less bandwidth than 600 MHz.

The most often encountered sources of clock noise spikes are inductive or capacitive coupling

of high-speed logic signals, and ground bounce. The best solution for addressing clock spikes

due to coupling, is to separate the traces and use short low inductance PC board traces. To

address ground bounce problems, all integrated circuits should have high frequency bypass

capacitors directly across their power supply pins, with low inductance traces for ground and

power supply. A less than optimum solution may be to limit the bandwidth of the trace by adding

series resistance and/or capacitance at the input pin.

If possible, reference audio signals to the V

AG

pin instead of to the V

pin. Handset receivers and

SS

telephone line interface circuits using transformers may be audio signal referenced completely to the

pin. Refer to the application schematics for examples of this circuitry. The V pin cannot be used

V

AG

for ESD and telephone line protection.

AG

7-2

MC145540

MOTOROLA

8.1 INTRODUCTION

The Individual tones of the tone generator are calculated by the digital signal processor based on an

Infinite Impulse Response (IIR) algorithm using 13-bit linear math. All of the internal memory locations

for the tone generator coefficients and algorithms are used for the ADPCM decoder routine and their

contents are lost during ADPCM decoder operation. ADPCM decoder operations are performed when

the Tone Enable bit, BR7(b3) is a 0.

Frequency and attenuation coefficients must be programmed after BR7(b3) has been low. If BR7(b3) is

kept high, either of the tones may be turned off and back on by BR7(b1:b0) without reprogramming the

frequency and attenuation coefficients.

The attenuation coefficients may be reprogrammed while BR7(b3) is a logical one for each tone wheth-

er the tone is on or off.

The frequency of a tone should not be reprogrammed while it is on. To change the frequency of a tone,

the tone generation algorithm needs to execute an initialization routine to develop the internal previous

samples to load the IIR algorithm. This initialization routine for tone generator 1 is executed while

BR7(b3) is a one and BR7(b1) transitions from a 0 to a 1. The logic state of BR7(b0) does not matter for

tone generator 1. Similarly, this initialization routine for tone generator 2 is executed while BR7(b3) is a

one and BR7(b0) transitions from a 0 to a 1. The logic state of BR7(b1) does not matter for tone genera-

tor 2. Both algorithms will be initialized if BR7(b3) is a logic one and BR7(1:0) are written to a logic 1 at

the same time. If the frequency coefficient is changed and this initialization routine is not executed, the

IIR algorithm could become unstable and generate a signal other than a clean sinusoid of the desired

amplitude.

The following procedure outlines the programing sequence for the tone generator.

1. Program the Tone Enable bit, BR7(b3) to a one. This turns on the tone generator routine and turns

off the ADPCM decoder routine. To avoid noise from the tone generator, BR7(1:0) should be written

to zeroes. The logic states of BR7(b7, b6, b5, b4, and b2) do not matter while BR7(b3) is a 1.

2. Program the coefficients for frequency and attenuation. The tone generator may be programmed

for frequency or attenuation for either tone in any order while BR7(1), (Tone 1 Enable) and BR7(0),

(Tone 2 Enable) bits are zeroes. The 12-bit coefficients must be programmed first with the 8 least

significant bits (LSB) in BR4 then the 4 most significant bits (MSB) are to be programmed into the 4

LSB of BR5. BR5 must also be programmed with the tone generator address parameter to tell the

device the destination of the 12-bit coefficient. The tone generator address parameter is pro-

grammed into the 2 MSB of BR5 during the same write cycle as the 4 MSB of the 12-bit coefficient.

Table 8-1 shows the tone generator address parameter destinations.

MOTOROLA

MC145540

8-1

Table 8-1. Tone Generator Address Parameter Destinations

b7

0

b6

0

Destination

Tone 1, Frequency Coefficient

Tone 1, Attenuation Coefficient

Tone 2, Frequency Coefficient

Tone 2, Attenuation Coefficient

0

1

0

1

3. BR7(b7) should be monitored for a logic zero before writing another BR4 plus BR5 coefficient. The

device can accept a coefficient from the combination of BR4 and BR5 once every FST cycle, which

is 125 µs. The typical write period for a non-synchronized microprocessor should not be faster than

every 250 µs.

4. BR7(1:0) may be programmed to logical ones to turn on tone 1 and tone 2. BR7(b3) must be pro-

grammed to a logical 1.

8.1.1 Programing the Tone Generator

This is an example of programing the tone generator to generate the DTMF pair of row 1 (697 Hz) at an

amplitude of –14 dBm (600Ω) and column 2 (1336 Hz) at an amplitude of –12 dBm (600Ω).

Select the tone generator routine.

Program BR7 with: 0000 1000

Program the 12-bit frequency coefficient for 697 Hz for tone 1. This

section has examples of calculating this frequency coefficient of HEX 6

D5.

Program BR4 with: 1101 0101

Program BR5 with: 0000 0110

Read BR7(7) and check for a zero to confirm that the DSP machine has

latched the data from BR4 and BR5.

Program the 12-bit attenuation coefficient for –14 dBm (600Ω) for tone

1. This section has an example of calculating this attenuation

coefficient of HEX 1 1A.

Program BR4 with: 0001 1010

Program BR5 with: 0100 0001

Read BR7(7) and check for a zero to confirm that the DSP machine has

latched the data from BR4 and BR5.

Program the 12-bit frequency coefficient for 1336 Hz for tone 2. Table

8–2 is a complete table of frequency coefficients which gives a

coefficient for a 1336.20 Hz frequency of HEX 3 FC.

Program BR4 with: 1111 1100

Program BR5 with: 1000 0011

Read BR7(7) and check for a zero to confirm that the DSP machine has

latched the data from BR4 and BR5.

Program the 12-bit attenuation coefficient for –12 dBm (600Ω) for tone

2. Table 8-3 is a complete table of attenuation coefficients which

gives a coefficient for an amplitude –12.01 dBm (600Ω) of HEX 1 63.

Program BR4 with: 0110 0011

Program BR5 with: 1100 0001

8-2

MC145540

MOTOROLA

Read BR7(7) and check for a zero to confirm that the DSP machine has

latched the data from BR4 and BR5.

Turn on tone 1 and tone 2 with BR7(b3, b1, and b0) to logical 1s.

Recall that B7(b3) must be a logical 1 also during all tone generator

functions including programing.

Program BR7 with: 0000 1011

8.1.2 Tone Frequency Coefficient Calculation.

The tone generator frequency is based on a filter which is programmed by the equation

cos(2*pi*f*0.000125). The form of this data is a 12-bit (two’s complement) coefficient. An example of

calculating the binary or hexadecimal coefficient for 697 hertz is this:

cos(2*pi*f*0.000125)

cos(2*pi*(697)*0.000125)

cos(2*(3.14159)*(697)*0.000125)

cos(0.547422 radians)

=

0.853869

To convert this number into a 12-bit two’s complement binary number whose most significant bit is the

sign information (1 is negative) and remaining 11-bits are the fractional part, (0.853869) must be con-

verted to a fractional binary number with 11 bits of significance. The successive approximation register

(SAR) method of converting from decimal to binary is used as an example.

(0.853869) is positive,

Therefore: coefficient = binary 0.XXX XXXX XXXX

0.853869 – (2 exp-1) = 0.853869 – 0.5 = 0.353869

Therefore: coefficient = binary 0.1XX XXXX XXXX

0.353869 – (2 exp-2) = 0.353869 – 0.25 = 0.103869

Therefore: coefficient = binary 0.11X XXXX XXXX

0.103869 – (2 exp-3) = 0.103869 – 0.125 = –0.021131

This changed the sign of the result and

Therefore: coefficient = binary 0.110 XXXX XXXX

0.103869 – (2 exp-4) = 0.103869 – 0.0625 = 0.041369

Therefore: coefficient = binary 0.110 1XXX XXXX

0.041369 – (2 exp-5) = 0.041369 – 0.03125 = 0.010119

Therefore: coefficient = binary 0.110 11XX XXXX

0.010119 – (2 exp-6) = 0.010119 – 0.015625 = –0.005506

This changed the sign of the result and

therefore: coefficient = binary 0.110 110X XXXX

0.010119 – (2 exp-7) = 0.010119 – 0.0078125 = 0.0023065

Therefore: coefficient = binary 0.110 1101 XXXX

0.0023065 – (2 exp-8) = 0.0023065 – 0.00390625 = –0.00159975

This changed the sign of the result and

Therefore: coefficient = binary 0.110 1101 0XXX

0.0023065 – (2 exp-9) = 0.0023065 – 0.001953125 = 0.000353375

Therefore: coefficient = binary 0.110 1101 01XX

0.000353375 – (2 exp-10) = 0.000353375 – 0.0009765625 = –0.0006231875

This changed the sign of the result and

Therefore: coefficient = binary 0.110 1101 010X

MOTOROLA

MC145540

8-3

0.000353375 – (2 exp-11) = 0.000353375 – 0.00048828125 = –.00013490625

This changed the sign of the result and

Therefore: coefficient = binary 0.110 1101 0100

This is the last bit and to make sure that we have the correct value for the LSB, one bit beyond the LSB

must be determined for round-off error minimization. Therefore:

0.000353375 – (2 exp-12) = 0.000353375 – 0.000244140625 = 0.000109234375

This result has a positive sign meaning that the remainder is greater than

one half of the LSB and to minimize error, the LSB should be a one. This

changes the result and therefore: coefficient = binary 0.110 1101 0101

Which binary 0.110 1101 0101 is Hexadecimal 06 D5

8.1.3 Tone Frequency Coefficient Calculation using Integer Mathematics for Deci-

mal to Hexadecimal Conversion.

The math to convert from decimal to binary for the frequency coefficient calculations may be kept in

integer form given that this device uses a coefficient that has 11-bits of fractional component. This is

11

accomplished by multiplying the result of the cosine function (which is in decimal form) by 2 , or 2048.

The round-off error minimization is accomplished by rounding-off the fractional component after multi-

plying by 2048. This example helps to clarify this procedure by calculating the binary or hexadecimal

coefficient for 697 hertz.

cos(2*pi*f*0.000125)

cos(2*pi*(697)*0.000125)

cos(2*(3.14159)*(697)*0.000125)

cos(0.547422 radians)

=

0.853869

Multiply by 2048

0.853869 * 2048 = 1748.723712

Round-off error minimization (the digit to the right of the decimal

point is greater than or equal to 5). Therefore:

1749

725

213

85

21

5

-

–

1024

512

256

128

64

32

16

8

=

725

213

–43

85

21

–11

5

–3

1

–1

0

>

binary 0.1XX XXXX XXXX

binary 0.11X XXXX XXXX

binary 0.110 XXXX XXXX

binary 0.110 1XXX XXXX

binary 0.110 11XX XXXX

binary 0.110 110X XXXX

binary 0.110 1101 XXXX

binary 0.110 1101 0XXX

binary 0.110 1101 01XX

binary 0.110 1101 010X

binary 0.110 1101 0101

5

1

4

2

1

Therefore: coefficient = binary 0.110 1101 0101

Which binary 0.110 1101 0101 is hexadecimal 06 D5

8.1.4 Tone Attenuation Coefficient Calculation

This is an example of calculating the attenuation coefficient for an output amplitude of –14 dBm (600Ω)

for one of the tone generators. The tone attenuation is accomplished by an 11-bit linear multiply of the

output from each of the IIR frequency algorithms. The format of the attenuation coefficient is a 12-bit 2’s

complement number with bits (10:0) being the fractional part and bit (11) being the sign information.

These attenuation coefficients should be limited to values between zero (binary 0.000 0000 0000 or

hexadecimal 0 00) and almost positive 1 (binary 0.111 1111 1111 or hexadecimal 7 FF). Note that this

scaling always results in attenuation of the tones.

8-4

MC145540

MOTOROLA

The amplitude from the frequency IIR algorithm is:

0.775 Vrms*(3.17 dB)*8192/8159 = 1.1209 Vrms

3.17 dB = 10exp(3.17/20) V/V = 1.44046 V/V

Where: 1. 0.775 Vrms is 0 dBm0 for this device.

2. 3.17 dB is the amplitude headroom for a tone relative to the

Mu-Law reference level of 0 dBm0.

3. 8192/8159 is the increase in amplitude for 13-bit linear compared

to Mu-Law companding.

The maximum amplitude from either tone 1 or tone 2 is:

1.1209 Vrms*2047/2048=1.1204 Vrms

Where: 4. 2047/2048 is the maximum output ratio for the attenuation routine.

To calculate –14 dBm (600Ω), start with the equation for dBm in volts, and solve for output voltage.

2

dBm=10*Log[(Vrms /R)/1mW]

2

dBm/10=Log[(Vrms /R)/1mW]

2

10exp(dBm/10)=(Vrms /R)/1mW=(Vrms )/(R*1mW)

2

[10exp(dBm/10)]*(R*1mW)=Vrms

sqrt{[10exp(dBm/10)]*(R*1mW)}=Vrms

Vrms=sqrt{[10exp(dBm/10)]*(600Ω*1mW)}

Using this equation to calculate the voltage for a –14 dBm amplitude.

Vrms(–14dBm)=sqrt{[10exp(–14/10)]*(600*0.001)}

Vrms(–14dBm)=0.1546 Vrms

The ratio of this desired voltage divided by the maximum tone amplitude gives the tone coefficient,

when this ratio is converted to hexadecimal. The tone coefficient requires an 11-bit fraction, which may

be converted to hexadecimal using the same procedures as the frequency coefficient.

0.1546 Vrms/1.1209 Vrms = 0.137924882

Converting to Hexadecimal for 11-bit fraction.

0.137924882*2048=282

Decimal 282 = Hexadecimal 1 1A

Tables 8-2 and 8-3 show the frequency coefficients and attenuation coefficients for the tone generator.

MOTOROLA

MC145540

8-5

Table 8-2. Frequency Coefficients for Tone Generator

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

FREQUENCY

3,960.21

3,943.73

3,931.08

3,920.41

3,911.01

3,902.51

3,894.70

3,887.42

3,880.59

3,874.13

3,867.98

3,862.10

3,856.46

3,851.04

3,845.80

3,840.74

3,835.83

3,831.07

3,826.43

3,821.91

3,817.51

3,813.21

3,809.00

3,804.88

3,800.85

3,796.90

3,793.02

3,789.22

3,785.48

3,781.80

3,778.19

3,774.63

3,771.12

3,767.67

3,764.27

3,760.92

3,757.61

3,754.34

3,751.12

3,747.94

3,744.80

3,741.70

3,738.63

3,735.60

3,732.60

3,729.63

3,726.70

3,723.79

3,720.92

3,718.08

BCD

FREQUENCY

3,715.26

3,712.47

3,709.71

3,706.97

3,704.25

3,701.57

3,698.90

3,696.26

3,693.64

3,691.04

3,688.46

3,685.91

3,683.37

3,680.86

3,678.36

3,675.88

3,673.42

3,670.98

3,668.55

3,666.15

3,663.76

3,661.38

3,659.03

3,656.69

3,654.36

3,652.05

3,649.75

3,647.47

3,645.20

3,642.95

3,640.71

3,638.48

3,636.27

3,634.07

3,631.89

3,629.71

3,627.55

3,625.40

3,623.26

3,621.13

3,619.02

3,616.92

3,614.82

3,612.74

3,610.67

3,608.61

3,606.56

3,604.52

3,602.49

3,600.48

BCD

FREQUENCY

3,598.47

3,596.47

3,594.48

3,592.50

3,590.52

3,588.56

3,586.61

3,584.66

3,582.73

3,580.80

3,578.88

3,576.97

3,575.07

3,573.18

3,571.29

3,569.41

3,567.54

3,565.68

3,563.83

3,561.98

3,560.14

3,558.31

3,556.48

3,554.66

3,552.85

3,551.05

3,549.25

3,547.46

3,545.68

3,543.90

3,542.13

3,540.37

3,538.61

3,536.86

3,535.12

3,533.38

3,531.65

3,529.92

3,528.20

3,526.49

3,524.78

3,523.08

3,521.38

3,519.69

3,518.01

3,516.33

3,514.65

3,512.99

3,511.32

3,509.67

–2047

–2046

–2045

–2044

–2043

–2042

–2041

–2040

–2039

–2038

–2037

–2036

–2035

–2034

–2033

–2032

–2031

–2030

–2029

–2028

–2027

–2026

–2025

–2024

–2023

–2022

–2021

–2020

–2019

–2018

–2017

–2016

–2015

–2014

–2013

–2012

–2011

–2010

–2009

–2008

–2007

–2006

–2005

–2004

–2003

–2002

–2001

–2000

–1999

–1998

8

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

–1997

–1996

–1995

–1994

–1993

–1992

–1991

–1990

–1989

–1988

–1987

–1986

–1985

–1984

–1983

–1982

–1981

–1980

–1979

–1978

–1977

–1976

–1975

–1974

–1973

–1972

–1971

–1970

–1969

–1968

–1967

–1966

–1965

–1964

–1963

–1962

–1961

–1960

–1959

–1958

–1957

–1956

–1955

–1954

–1953

–1952

–1951

–1950

–1949

–1948

8

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

–1947

–1946

–1945

–1944

–1943

–1942

–1941

–1940

–1939

–1938

–1937

–1936

–1935

–1934

–1933

–1932

–1931

–1930

–1929

–1928

–1927

–1926

–1925

–1924

–1923

–1922

–1921

–1920

–1919

–1918

–1917

–1916

–1915

–1914

–1913

–1912

–1911

–1910

–1909

–1908

–1907

–1906

–1905

–1904

–1903

–1902

–1901

–1900

–1899

–1898

8

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

8-6

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

FREQUENCY

3,508.01

3,506.37

3,504.72

3,503.09

3,501.46

3,499.83

3,498.21

3,496.59

3,494.98

3,493.37

3,491.77

3,490.17

3,488.58

3,486.99

3,485.41

3,483.83

3,482.26

3,480.69

3,479.12

3,477.56

3,476.00

3,474.45

3,472.91

3,471.36

3,469.82

3,468.29

3,466.76

3,465.23

3,463.71

3,462.19

3,460.67

3,459.16

3,457.66

3,456.15

3,454.66

3,453.16

3,451.67

3,450.18

3,448.70

3,447.22

3,445.74

3,444.27

3,442.80

3,441.34

3,439.87

3,438.42

3,436.96

3,435.51

3,434.06

3,432.62

BCD

FREQUENCY

3,431.18

3,429.74

3,428.31

3,426.88

3,425.45

3,424.03

3,422.60

3,421.19

3,419.77

3,418.36

3,416.95

3,415.55

3,414.15

3,412.75

3,411.35

3,409.96

3,408.57

3,407.19

3,405.80

3,404.42

3,403.05

3,401.67

3,400.30

3,398.93

3,397.57

3,396.20

3,394.84

3,393.49

3,392.13

3,390.78

3,389.43

3,388.08

3,386.74

3,385.40

3,384.06

3,382.73

3,381.39

3,380.06

3,378.74

3,377.41

3,376.09

3,374.77

3,373.45

3,372.14

3,370.83

3,369.52

3,368.21

3,366.90

3,365.60

3,364.30

BCD

FREQUENCY

3,363.01

3,361.71

3,360.42

3,359.13

3,357.84

3,356.56

3,355.27

3,353.99

3,352.71

3,351.44

3,350.16

3,348.89

3,347.62

3,346.36

3,345.09

3,343.83

3,342.57

3,341.31

3,340.05

3,338.80

3,337.55

3,336.30

3,335.05

3,333.81

3,332.56

3,331.32

3,330.08

3,328.85

3,327.61

3,326.38

3,325.15

3,323.92

3,322.69

3,321.47

3,320.24

3,319.02

3,317.81

3,316.59

3,315.37

3,314.16

3,312.95

3,311.74

3,310.53

3,309.33

3,308.12

3,306.92

3,305.72

3,304.53

3,303.33

3,302.14

–1897

–1896

–1895

–1894

–1893

–1892

–1891

–1890

–1889

–1888

–1887

–1886

–1885

–1884

–1883

–1882

–1881

–1880

–1879

–1878

–1877

–1876

–1875

–1874

–1873

–1872

–1871

–1870

–1869

–1868

–1867

–1866

–1865

–1864

–1863

–1862

–1861

–1860

–1859

–1858

–1857

–1856

–1855

–1854

–1853

–1852

–1851

–1850

–1849

–1848

8

97

98

–1847

–1846

–1845

–1844

–1843

–1842

–1841

–1840

–1839

–1838

–1837

–1836

–1835

–1834

–1833

–1832

–1831

–1830

–1829

–1828

–1827

–1826

–1825

–1824

–1823

–1822

–1821

–1820

–1819

–1818

–1817

–1816

–1815

–1814

–1813

–1812

–1811

–1810

–1809

–1808

–1807

–1806

–1805

–1804

–1803

–1802

–1801

–1800

–1799

–1798

8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

–1797

–1796

–1795

–1794

–1793

–1792

–1791

–1790

–1789

–1788

–1787

–1786

–1785

–1784

–1783

–1782

–1781

–1780

–1779

–1778

–1777

–1776

–1775

–1774

–1773

–1772

–1771

–1770

–1769

–1768

–1767

–1766

–1765

–1764

–1763

–1762

–1761

–1760

–1759

–1758

–1757

–1756

–1755

–1754

–1753

–1752

–1751

–1750

–1749

–1748

8

9

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

MOTOROLA

MC145540

8-7

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

FREQUENCY

3,300.94

3,299.75

3,298.57

3,297.38

3,296.19

3,295.01

3,293.83

3,292.65

3,291.47

3,290.30

3,289.12

3,287.95

3,286.78

3,285.61

3,284.44

3,283.27

3,282.11

3,280.95

3,279.79

3,278.63

3,277.47

3,276.31

3,275.16

3,274.01

3,272.86

3,271.71

3,270.56

3,269.41

3,268.27

3,267.13

3,265.99

3,264.85

3,263.71

3,262.57

3,261.44

3,260.30

3,259.17

3,258.04

3,256.91

3,255.78

3,254.66

3,253.53

3,252.41

3,251.29

3,250.17

3,249.05

3,247.93

3,246.82

3,245.70

3,244.59

BCD

FREQUENCY

3,243.48

3,242.37

3,241.26

3,240.15

3,239.05

3,237.94

3,236.84

3,235.74

3,234.64

3,233.54

3,232.44

3,231.35

3,230.25

3,229.16

3,228.07

3,226.98

3,225.89

3,224.80

3,223.72

3,222.63

3,221.55

3,220.46

3,219.38

3,218.30

3,217.22

3,216.15

3,215.07

3,214.00

3,212.92

3,211.85

3,210.78

3,209.71

3,208.64

3,207.58

3,206.51

3,205.45

3,204.38

3,203.32

3,202.26

3,201.20

3,200.14

3,199.08

3,198.03

3,196.97

3,195.92

3,194.87

3,193.82

3,192.77

3,191.72

3,190.67

BCD

FREQUENCY

3,189.62

3,188.58

3,187.53

3,186.49

3,185.45

3,184.41

3,183.37

3,182.33

3,181.29

3,180.25

3,179.22

3,178.19

3,177.15

3,176.12

3,175.09

3,174.06

3,173.03

3,172.00

3,170.98

3,169.95

3,168.93

3,167.91

3,166.88

3,165.86

3,164.84

3,163.82

3,162.81

3,161.79

3,160.77

3,159.76

3,158.75

3,157.73

3,156.72

3,155.71

3,154.70

3,153.69

3,152.69

3,151.68

3,150.67

3,149.67

3,148.67

3,147.66

3,146.66

3,145.66

3,144.66

3,143.66

3,142.67

3,141.67

3,140.67

3,139.68

–1747

–1746

–1745

–1744

–1743

–1742

–1741

–1740

–1739

–1738

–1737

–1736

–1735

–1734

–1733

–1732

–1731

–1730

–1729

–1728

–1727

–1726

–1725

–1724

–1723

–1722

–1721

–1720

–1719

–1718

–1717

–1716

–1715

–1714

–1713

–1712

–1711

–1710

–1709

–1708

–1707

–1706

–1705

–1704

–1703

–1702

–1701

–1700

–1699

–1698

9

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

–1697

–1696

–1695

–1694

–1693

–1692

–1691

–1690

–1689

–1688

–1687

–1686

–1685

–1684

–1683

–1682

–1681

–1680

–1679

–1678

–1677

–1676

–1675

–1674

–1673

–1672

–1671

–1670

–1669

–1668

–1667

–1666

–1665

–1664

–1663

–1662

–1661

–1660

–1659

–1658

–1657

–1656

–1655

–1654

–1653

–1652

–1651

–1650

–1649

–1648

9

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

–1647

–1646

–1645

–1644

–1643

–1642

–1641

–1640

–1639

–1638

–1637

–1636

–1635

–1634

–1633

–1632

–1631

–1630

–1629

–1628

–1627

–1626

–1625

–1624

–1623

–1622

–1621

–1620

–1619

–1618

–1617

–1616

–1615

–1614

–1613

–1612

–1611

–1610

–1609

–1608

–1607

–1606

–1605

–1604

–1603

–1602

–1601

–1600

–1599

–1598

9

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

8-8

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

FREQUENCY

3,138.69

3,137.69

3,136.70

3,135.71

3,134.72

3,133.73

3,132.75

3,131.76

3,130.77

3,129.79

3,128.80

3,127.82

3,126.84

3,125.86

3,124.88

3,123.90

3,122.92

3,121.94

3,120.96

3,119.99

3,119.01

3,118.04

3,117.07

3,116.10

3,115.12

3,114.15

3,113.18

3,112.22

3,111.25

3,110.28

3,109.31

3,108.35

3,107.39

3,106.42

3,105.46

3,104.50

3,103.54

3,102.58

3,101.62

3,100.66

3,099.70

3,098.75

3,097.79

3,096.83

3,095.88

3,094.93

3,093.97

3,093.02

3,092.07

3,091.12

BCD

FREQUENCY

3,090.17

3,089.23

3,088.28

3,087.33

3,086.39

3,085.44

3,084.50

3,083.55

3,082.61

3,081.67

3,080.73

3,079.79

3,078.85

3,077.91

3,076.97

3,076.03

3,075.10

3,074.16

3,073.23

3,072.29

3,071.36

3,070.43

3,069.49

3,068.56

3,067.63

3,066.70

3,065.77

3,064.85

3,063.92

3,062.99

3,062.07

3,061.14

3,060.22

3,059.29

3,058.37

3,057.45

3,056.53

3,055.61

3,054.69

3,053.77

3,052.85

3,051.93

3,051.01

3,050.10

3,049.18

3,048.27

3,047.35

3,046.44

3,045.53

3,044.62

BCD

FREQUENCY

3,043.70

3,042.79

3,041.88

3,040.97

3,040.07

3,039.16

3,038.25

3,037.34

3,036.44

3,035.53

3,034.63

3,033.72

3,032.82

3,031.92

3,031.02

3,030.12

3,029.22

3,028.32

3,027.42

3,026.52

3,025.62

3,024.72

3,023.83

3,022.93

3,022.04

3,021.14

3,020.25

3,019.35

3,018.46

3,017.57

3,016.68

3,015.79

3,014.90

3,014.01

3,013.12

3,012.23

3,011.34

3,010.46

3,009.57

3,008.69

3,007.80

3,006.92

3,006.03

3,005.15

3,004.27

3,003.39

3,002.50

3,001.62

3,000.74

2,999.86

–1597

–1596

–1595

–1594

–1593

–1592

–1591

–1590

–1589

–1588

–1587

–1586

–1585

–1584

–1583

–1582

–1581

–1580

–1579

–1578

–1577

–1576

–1575

–1574

–1573

–1572

–1571

–1570

–1569

–1568

–1567

–1566

–1565

–1564

–1563

–1562

–1561

–1560

–1559

–1558

–1557

–1556

–1555

–1554

–1553

–1552

–1551

–1550

–1549

–1548

9

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

–1547

–1546

–1545

–1544

–1543

–1542

–1541

–1540

–1539

–1538

–1537

–1536

–1535

–1534

–1533

–1532

–1531

–1530

–1529

–1528

–1527

–1526

–1525

–1524

–1523

–1522

–1521

–1520

–1519

–1518

–1517

–1516

–1515

–1514

–1513

–1512

–1511

–1510

–1509

–1508

–1507

–1506

–1505

–1504

–1503

–1502

–1501

–1500

–1499

–1498

9

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

–1497

–1496

–1495

–1494

–1493

–1492

–1491

–1490

–1489

–1488

–1487

–1486

–1485

–1484

–1483

–1482

–1481

–1480

–1479

–1478

–1477

–1476

–1475

–1474

–1473

–1472

–1471

–1470

–1469

–1468

–1467

–1466

–1465

–1464

–1463

–1462

–1461

–1460

–1459

–1458

–1457

–1456

–1455

–1454

–1453

–1452

–1451

–1450

–1449

–1448

A

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

9

A

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

F1

F2

F3

F4

MOTOROLA

MC145540

8-9

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

FREQUENCY

2,998.99

2,998.11

2,997.23

2,996.35

2,995.48

2,994.60

2,993.72

2,992.85

2,991.98

2,991.10

2,990.23

2,989.36

2,988.49

2,987.62

2,986.74

2,985.87

2,985.01

2,984.14

2,983.27

2,982.40

2,981.53

2,980.67

2,979.80

2,978.94

2,978.07

2,977.21

2,976.34

2,975.48

2,974.62

2,973.76

2,972.89

2,972.03

2,971.17

2,970.31

2,969.45

2,968.60

2,967.74

2,966.88

2,966.02

2,965.17

2,964.31

2,963.46

2,962.60

2,961.75

2,960.89

2,960.04

2,959.19

2,958.34

2,957.48

2,956.63

BCD

FREQUENCY

2,955.78

2,954.93

2,954.08

2,953.23

2,952.39

2,951.54

2,950.69

2,949.84

2,949.00

2,948.15

2,947.31

2,946.46

2,945.62

2,944.77

2,943.93

2,943.09

2,942.25

2,941.40

2,940.56

2,939.72

2,938.88

2,938.04

2,937.20

2,936.37

2,935.53

2,934.69

2,933.85

2,933.02

2,932.18

2,931.34

2,930.51

2,929.67

2,928.84

2,928.01

2,927.17

2,926.34

2,925.51

2,924.68

2,923.85

2,923.01

2,922.18

2,921.35

2,920.52

2,919.70

2,918.87

2,918.04

2,917.21

2,916.39

2,915.56

2,914.73

BCD

FREQUENCY

2,913.91

2,913.08

2,912.26

2,911.43

2,910.61

2,909.79

2,908.96

2,908.14

2,907.32

2,906.50

2,905.68

2,904.86

2,904.04

2,903.22

2,902.40

2,901.58

2,900.76

2,899.94

2,899.13

2,898.31

2,897.49

2,896.68

2,895.86

2,895.05

2,894.23

2,893.42

2,892.60

2,891.79

2,890.98

2,890.16

2,889.35

2,888.54

2,887.73

2,886.92

2,886.11

2,885.30

2,884.49

2,883.68

2,882.87

2,882.06

2,881.26

2,880.45

2,879.64

2,878.84

2,878.03

2,877.22

2,876.42

2,875.61

2,874.81

2,874.01

–1447

–1446

–1445

–1444

–1443

–1442

–1441

–1440

–1439

–1438

–1437

–1436

–1435

–1434

–1433

–1432

–1431

–1430

–1429

–1428

–1427

–1426

–1425

–1424

–1423

–1422

–1421

–1420

–1419

–1418

–1417

–1416

–1415

–1414

–1413

–1412

–1411

–1410

–1409

–1408

–1407

–1406

–1405

–1404

–1403

–1402

–1401

–1400

–1399

–1398

A

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

–1397

–1396

–1395

–1394

–1393

–1392

–1391

–1390

–1389

–1388

–1387

–1386

–1385

–1384

–1383

–1382

–1381

–1380

–1379

–1378

–1377

–1376

–1375

–1374

–1373

–1372

–1371

–1370

–1369

–1368

–1367

–1366

–1365

–1364

–1363

–1362

–1361

–1360

–1359

–1358

–1357

–1356

–1355

–1354

–1353

–1352

–1351

–1350

–1349

–1348

A

8B

8C

8D

8E

8F

90

–1347

–1346

–1345

–1344

–1343

–1342

–1341

–1340

–1339

–1338

–1337

–1336

–1335

–1334

–1333

–1332

–1331

–1330

–1329

–1328

–1327

–1326

–1325

–1324

–1323

–1322

–1321

–1320

–1319

–1318

–1317

–1316

–1315

–1314

–1313

–1312

–1311

–1310

–1309

–1308

–1307

–1306

–1305

–1304

–1303

–1302

–1301

–1300

–1299

–1298

A

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

8-10

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

FREQUENCY

2,873.20

2,872.40

2,871.60

2,870.79

2,869.99

2,869.19

2,868.39

2,867.59

2,866.79

2,865.99

2,865.19

2,864.39

2,863.59

2,862.79

2,862.00

2,861.20

2,860.40

2,859.60

2,858.81

2,858.01

2,857.22

2,856.42

2,855.63

2,854.83

2,854.04

2,853.25

2,852.45

2,851.66

2,850.87

2,850.08

2,849.28

2,848.49

2,847.70

2,846.91

2,846.12

2,845.33

2,844.54

2,843.75

2,842.97

2,842.18

2,841.39

2,840.60

2,839.82

2,839.03

2,838.24

2,837.46

2,836.67

2,835.89

2,835.10

2,834.32

BCD

FREQUENCY

2,833.53

2,832.75

2,831.97

2,831.18

2,830.40

2,829.62

2,828.84

2,828.06

2,827.28

2,826.50

2,825.72

2,824.94

2,824.16

2,823.38

2,822.60

2,821.82

2,821.04

2,820.26

2,819.49

2,818.71

2,817.93

2,817.16

2,816.38

2,815.60

2,814.83

2,814.05

2,813.28

2,812.51

2,811.73

2,810.96

2,810.19

2,809.41

2,808.64

2,807.87

2,807.10

2,806.32

2,805.55

2,804.78

2,804.01

2,803.24

2,802.47

2,801.70

2,800.93

2,800.17

2,799.40

2,798.63

2,797.86

2,797.09

2,796.33

2,795.56

BCD

FREQUENCY

2,794.79

2,794.03

2,793.26

2,792.50

2,791.73

2,790.97

2,790.20

2,789.44

2,788.68

2,787.91

2,787.15

2,786.39

2,785.62

2,784.86

2,784.10

2,783.34

2,782.58

2,781.82

2,781.06

2,780.30

2,779.54

2,778.78

2,778.02

2,777.26

2,776.50

2,775.74

2,774.98

2,774.23

2,773.47

2,772.71

2,771.95

2,771.20

2,770.44

2,769.69

2,768.93

2,768.18

2,767.42

2,766.67

2,765.91

2,765.16

2,764.40

2,763.65

2,762.90

2,762.15

2,761.39

2,760.64

2,759.89

2,759.14

2,758.39

2,757.64

–1297

–1296

–1295

–1294

–1293

–1292

–1291

–1290

–1289

–1288

–1287

–1286

–1285

–1284

–1283

–1282

–1281

–1280

–1279

–1278

–1277

–1276

–1275

–1274

–1273

–1272

–1271

–1270

–1269

–1268

–1267

–1266

–1265

–1264

–1263

–1262

–1261

–1260

–1259

–1258

–1257

–1256

–1255

–1254

–1253

–1252

–1251

–1250

–1249

–1248

A

B

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

–1247

–1246

–1245

–1244

–1243

–1242

–1241

–1240

–1239

–1238

–1237

–1236

–1235

–1234

–1233

–1232

–1231

–1230

–1229

–1228

–1227

–1226

–1225

–1224

–1223

–1222

–1221

–1220

–1219

–1218

–1217

–1216

–1215

–1214

–1213

–1212

–1211

–1210

–1209

–1208

–1207

–1206

–1205

–1204

–1203

–1202

–1201

–1200

–1199

–1198

B

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

–1197

–1196

–1195

–1194

–1193

–1192

–1191

–1190

–1189

–1188

–1187

–1186

–1185

–1184

–1183

–1182

–1181

–1180

–1179

–1178

–1177

–1176

–1175

–1174

–1173

–1172

–1171

–1170

–1169

–1168

–1167

–1166

–1165

–1164

–1163

–1162

–1161

–1160

–1159

–1158

–1157

–1156

–1155

–1154

–1153

–1152

–1151

–1150

–1149

–1148

B

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

MOTOROLA

MC145540

8-11

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

–1147

–1146

–1145

–1144

–1143

–1142

–1141

–1140

–1139

–1138

–1137

–1136

–1135

–1134

–1133

–1132

–1131

–1130

–1129

–1128

–1127

–1126

–1125

–1124

–1123

–1122

–1121

–1120

–1119

–1118

–1117

–1116

–1115

–1114

–1113

–1112

–1111

–1110

–1109

–1108

–1107

–1106

–1105

–1104

–1103

–1102

–1101

–1100

–1099

–1098

FREQUENCY

2,756.89

2,756.14

2,755.39

2,754.64

2,753.89

2,753.14

2,752.39

2,751.64

2,750.89

2,750.14

2,749.40

2,748.65

2,747.90

2,747.15

2,746.41

2,745.66

2,744.92

2,744.17

2,743.43

2,742.68

2,741.94

2,741.19

2,740.45

2,739.70

2,738.96

2,738.22

2,737.47

2,736.73

2,735.99

2,735.25

2,734.50

2,733.76

2,733.02

2,732.28

2,731.54

2,730.80

2,730.06

2,729.32

2,728.58

2,727.84

2,727.10

2,726.36

2,725.62

2,724.89

2,724.15

2,723.41

2,722.67

2,721.94

2,721.20

2,720.46

BCD

FREQUENCY

2,719.73

2,718.99

2,718.25

2,717.52

2,716.78

2,716.05

2,715.31

2,714.58

2,713.84

2,713.11

2,712.38

2,711.64

2,710.91

2,710.18

2,709.44

2,708.71

2,707.98

2,707.25

2,706.52

2,705.79

2,705.05

2,704.32

2,703.59

2,702.86

2,702.13

2,701.40

2,700.67

2,699.94

2,699.21

2,698.49

2,697.76

2,697.03

2,696.30

2,695.57

2,694.85

2,694.12

2,693.39

2,692.67

2,691.94

2,691.21

2,690.49

2,689.76

2,689.04

2,688.31

2,687.59

2,686.86

2,686.14

2,685.41

2,684.69

2,683.96

BCD

FREQUENCY

2,683.24

2,682.52

2,681.79

2,681.07

2,680.35

2,679.63

2,678.90

2,678.18

2,677.46

2,676.74

2,676.02

2,675.30

2,674.58

2,673.86

2,673.14

2,672.42

2,671.70

2,670.98

2,670.26

2,669.54

2,668.82

2,668.10

2,667.38

2,666.67

2,665.95

2,665.23

2,664.51

2,663.80

2,663.08

2,662.36

2,661.65

2,660.93

2,660.22

2,659.50

2,658.78

2,658.07

2,657.35

2,656.64

2,655.92

2,655.21

2,654.50

2,653.78

2,653.07

2,652.36

2,651.64

2,650.93

2,650.22

2,649.50

2,648.79

2,648.08

B

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

–1097

–1096

–1095

–1094

–1093

–1092

–1091

–1090

–1089

–1088

–1087

–1086

–1085

–1084

–1083

–1082

–1081

–1080

–1079

–1078

–1077

–1076

–1075

–1074

–1073

–1072

–1071

–1070

–1069

–1068

–1067

–1066

–1065

–1064

–1063

–1062

–1061

–1060

–1059

–1058

–1057

–1056

–1055

–1054

–1053

–1052

–1051

–1050

–1049

–1048

B

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

–1047

–1046

–1045

–1044

–1043

–1042

–1041

–1040

–1039

–1038

–1037

–1036

–1035

–1034

–1033

–1032

–1031

–1030

–1029

–1028

–1027

–1026

–1025

–1024

–1023

–1022

–1021

–1020

–1019

–1018

–1017

–1016

–1015

–1014

–1013

–1012

–1011

–1010

–1009

–1008

–1007

–1006

–1005

–1004

–1003

–1002

–1001

–1000

–999

B

C

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

12

13

14

15

16

17

18

19

1A

–998

8-12

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

–997

–996

–995

–994

–993

–992

–991

–990

–989

–988

–987

–986

–985

–984

–983

–982

–981

–980

–979

–978

–977

–976

–975

–974

–973

–972

–971

–970

–969

–968

–967

–966

–965

–964

–963

–962

–961

–960

–959

–958

–957

–956

–955

–954

–953

–952

–951

–950

–949

–948

FREQUENCY

2,647.37

2,646.66

2,645.94

2,645.23

2,644.52

2,643.81

2,643.10

2,642.39

2,641.68

2,640.97

2,640.26

2,639.55

2,638.84

2,638.13

2,637.43

2,636.72

2,636.01

2,635.30

2,634.59

2,633.88

2,633.18

2,632.47

2,631.76

2,631.06

2,630.35

2,629.64

2,628.94

2,628.23

2,627.52

2,626.82

2,626.11

2,625.41

2,624.70

2,624.00

2,623.29

2,622.59

2,621.89

2,621.18

2,620.48

2,619.77

2,619.07

2,618.37

2,617.67

2,616.96

2,616.26

2,615.56

2,614.86

2,614.15

2,613.45

2,612.75

BCD

–947

–946

–945

–944

–943

–942

–941

–940

–939

–938

–937

–936

–935

–934

–933

–932

–931

–930

–929

–928

–927

–926

–925

–924

–923

–922

–921

–920

–919

–918

–917

–916

–915

–914

–913

–912

–911

–910

–909

–908

–907

–906

–905

–904

–903

–902

–901

–900

–899

–898

FREQUENCY

2,612.05

2,611.35

2,610.65

2,609.95

2,609.25

2,608.55

2,607.85

2,607.15

2,606.45

2,605.75

2,605.05

2,604.35

2,603.65

2,602.95

2,602.25

2,601.55

2,600.86

2,600.16

2,599.46

2,598.76

2,598.07

2,597.37

2,596.67

2,595.98

2,595.28

2,594.58

2,593.89

2,593.19

2,592.49

2,591.80

2,591.10

2,590.41

2,589.71

2,589.02

2,588.32

2,587.63

2,586.94

2,586.24

2,585.55

2,584.85

2,584.16

2,583.47

2,582.77

2,582.08

2,581.39

2,580.70

2,580.00

2,579.31

2,578.62

2,577.93

BCD

–897

–896

–895

–894

–893

–892

–891

–890

–889

–888

–887

–886

–885

–884

–883

–882

–881

–880

–879

–878

–877

–876

–875

–874

–873

–872

–871

–870

–869

–868

–867

–866

–865

–864

–863

–862

–861

–860

–859

–858

–857

–856

–855

–854

–853

–852

–851

–850

–849

–848

FREQUENCY

2,577.24

2,576.54

2,575.85

2,575.16

2,574.47

2,573.78

2,573.09

2,572.40

2,571.71

2,571.02

2,570.33

2,569.64

2,568.95

2,568.26

2,567.57

2,566.88

2,566.19

2,565.51

2,564.82

2,564.13

2,563.44

2,562.75

2,562.06

2,561.38

2,560.69

2,560.00

2,559.32

2,558.63

2,557.94

2,557.26

2,556.57

2,555.88

2,555.20

2,554.51

2,553.83

2,553.14

2,552.46

2,551.77

2,551.09

2,550.40

2,549.72

2,549.03

2,548.35

2,547.66

2,546.98

2,546.30

2,545.61

2,544.93

2,544.25

2,543.56

C

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

C

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

MOTOROLA

MC145540

8-13

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

–847

–846

–845

–844

–843

–842

–841

–840

–839

–838

–837

–836

–835

–834

–833

–832

–831

–830

–829

–828

–827

–826

–825

–824

–823

–822

–821

–820

–819

–818

–817

–816

–815

–814

–813

–812

–811

–810

–809

–808

–807

–806

–805

–804

–803

–802

–801

–800

–799

–798

FREQUENCY

2,542.88

2,542.20

2,541.51

2,540.83

2,540.15

2,539.47

2,538.79

2,538.10

2,537.42

2,536.74

2,536.06

2,535.38

2,534.70

2,534.02

2,533.34

2,532.66

2,531.97

2,531.29

2,530.61

2,529.93

2,529.26

2,528.58

2,527.90

2,527.22

2,526.54

2,525.86

2,525.18

2,524.50

2,523.82

2,523.15

2,522.47

2,521.79

2,521.11

2,520.43

2,519.76

2,519.08

2,518.40

2,517.73

2,517.05

2,516.37

2,515.70

2,515.02

2,514.34

2,513.67

2,512.99

2,512.32

2,511.64

2,510.96

2,510.29

2,509.61

BCD

–797

–796

–795

–794

–793

–792

–791

–790

–789

–788

–787

–786

–785

–784

–783

–782

–781

–780

–779

–778

–777

–776

–775

–774

–773

–772

–771

–770

–769

–768

–767

–766

–765

–764

–763

–762

–761

–760

–759

–758

–757

–756

–755

–754

–753

–752

–751

–750

–749

–748

FREQUENCY

2,508.94

2,508.26

2,507.59

2,506.91

2,506.24

2,505.57

2,504.89

2,504.22

2,503.54

2,502.87

2,502.20

2,501.52

2,500.85

2,500.18

2,499.50

2,498.83

2,498.16

2,497.49

2,496.81

2,496.14

2,495.47

2,494.80

2,494.13

2,493.46

2,492.78

2,492.11

2,491.44

2,490.77

2,490.10

2,489.43

2,488.76

2,488.09

2,487.42

2,486.75

2,486.08

2,485.41

2,484.74

2,484.07

2,483.40

2,482.73

2,482.06

2,481.39

2,480.72

2,480.05

2,479.39

2,478.72

2,478.05

2,477.38

2,476.71

2,476.04

BCD

–747

–746

–745

–744

–743

–742

–741

–740

–739

–738

–737

–736

–735

–734

–733

–732

–731

–730

–729

–728

–727

–726

–725

–724

–723

–722

–721

–720

–719

–718

–717

–716

–715

–714

–713

–712

–711

–710

–709

–708

–707

–706

–705

–704

–703

–702

–701

–700

–699

–698

FREQUENCY

2,475.38

2,474.71

2,474.04

2,473.37

2,472.71

2,472.04

2,471.37

2,470.71

2,470.04

2,469.37

2,468.71

2,468.04

2,467.37

2,466.71

2,466.04

2,465.38

2,464.71

2,464.05

2,463.38

2,462.72

2,462.05

2,461.38

2,460.72

2,460.06

2,459.39

2,458.73

2,458.06

2,457.40

2,456.73

2,456.07

2,455.41

2,454.74

2,454.08

2,453.42

2,452.75

2,452.09

2,451.43

2,450.76

2,450.10

2,449.44

2,448.78

2,448.11

2,447.45

2,446.79

2,446.13

2,445.47

2,444.80

2,444.14

2,443.48

2,442.82

C

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

C

D

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

D

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

12

13

14

8-14

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

–697

–696

–695

–694

–693

–692

–691

–690

–689

–688

–687

–686

–685

–684

–683

–682

–681

–680

–679

–678

–677

–676

–675

–674

–673

–672

–671

–670

–669

–668

–667

–666

–665

–664

–663

–662

–661

–660

–659

–658

–657

–656

–655

–654

–653

–652

–651

–650

–649

–648

FREQUENCY

2,442.16

2,441.50

2,440.84

2,440.17

2,439.51

2,438.85

2,438.19

2,437.53

2,436.87

2,436.21

2,435.55

2,434.89

2,434.23

2,433.57

2,432.91

2,432.25

2,431.59

2,430.94

2,430.28

2,429.62

2,428.96

2,428.30

2,427.64

2,426.98

2,426.33

2,425.67

2,425.01

2,424.35

2,423.69

2,423.04

2,422.38

2,421.72

2,421.06

2,420.41

2,419.75

2,419.09

2,418.43

2,417.78

2,417.12

2,416.46

2,415.81

2,415.15

2,414.50

2,413.84

2,413.18

2,412.53

2,411.87

2,411.22

2,410.56

2,409.91

BCD

–647

–646

–645

–644

–643

–642

–641

–640

–639

–638

–637

–636

–635

–634

–633

–632

–631

–630

–629

–628

–627

–626

–625

–624

–623

–622

–621

–620

–619

–618

–617

–616

–615

–614

–613

–612

–611

–610

–609

–608

–607

–606

–605

–604

–603

–602

–601

–600

–599

–598

FREQUENCY

2,409.25

2,408.59

2,407.94

2,407.28

2,406.63

2,405.97

2,405.32

2,404.67

2,404.01

2,403.36

2,402.70

2,402.05

2,401.39

2,400.74

2,400.09

2,399.43

2,398.78

2,398.13

2,397.47

2,396.82

2,396.17

2,395.51

2,394.86

2,394.21

2,393.56

2,392.90

2,392.25

2,391.60

2,390.95

2,390.29

2,389.64

2,388.99

2,388.34

2,387.69

2,387.03

2,386.38

2,385.73

2,385.08

2,384.43

2,383.78

2,383.13

2,382.48

2,381.83

2,381.17

2,380.52

2,379.87

2,379.22

2,378.57

2,377.92

2,377.27

BCD

–597

–596

–595

–594

–593

–592

–591

–590

–589

–588

–587

–586

–585

–584

–583

–582

–581

–580

–579

–578

–577

–576

–575

–574

–573

–572

–571

–570

–569

–568

–567

–566

–565

–564

–563

–562

–561

–560

–559

–558

–557

–556

–555

–554

–553

–552

–551

–550

–549

–548

FREQUENCY

2,376.62

2,375.97

2,375.32

2,374.67

2,374.02

2,373.37

2,372.72

2,372.08

2,371.43

2,370.78

2,370.13

2,369.48

2,368.83

2,368.18

2,367.53

2,366.88

2,366.24

2,365.59

2,364.94

2,364.29

2,363.64

2,363.00

2,362.35

2,361.70

2,361.05

2,360.41

2,359.76

2,359.11

2,358.46

2,357.82

2,357.17

2,356.52

2,355.88

2,355.23

2,354.58

2,353.94

2,353.29

2,352.64

2,352.00

2,351.35

2,350.70

2,350.06

2,349.41

2,348.77

2,348.12

2,347.48

2,346.83

2,346.18

2,345.54

2,344.89

D

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

D

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

D

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

MOTOROLA

MC145540

8-15

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

–547

–546

–545

–544

–543

–542

–541

–540

–539

–538

–537

–536

–535

–534

–533

–532

–531

–530

–529

–528

–527

–526

–525

–524

–523

–522

–521

–520

–519

–518

–517

–516

–515

–514

–513

–512

–511

–510

–509

–508

–507

–506

–505

–504

–503

–502

–501

–500

–499

–498

FREQUENCY

2,344.25

2,343.60

2,342.96

2,342.31

2,341.67

2,341.02

2,340.38

2,339.73

2,339.09

2,338.45

2,337.80

2,337.16

2,336.51

2,335.87

2,335.23

2,334.58

2,333.94

2,333.29

2,332.65

2,332.01

2,331.36

2,330.72

2,330.08

2,329.43

2,328.79

2,328.15

2,327.50

2,326.86

2,326.22

2,325.58

2,324.93

2,324.29

2,323.65

2,323.01

2,322.36

2,321.72

2,321.08

2,320.44

2,319.80

2,319.15

2,318.51

2,317.87

2,317.23

2,316.59

2,315.95

2,315.31

2,314.66

2,314.02

2,313.38

2,312.74

BCD

–497

–496

–495

–494

–493

–492

–491

–490

–489

–488

–487

–486

–485

–484

–483

–482

–481

–480

–479

–478

–477

–476

–475

–474

–473

–472

–471

–470

–469

–468

–467

–466

–465

–464

–463

–462

–461

–460

–459

–458

–457

–456

–455

–454

–453

–452

–451

–450

–449

–448

FREQUENCY

2,312.10

2,311.46

2,310.82

2,310.18

2,309.54

2,308.90

2,308.26

2,307.62

2,306.98

2,306.34

2,305.70

2,305.06

2,304.42

2,303.78

2,303.14

2,302.50

2,301.86

2,301.22

2,300.58

2,299.94

2,299.30

2,298.66

2,298.02

2,297.38

2,296.74

2,296.10

2,295.46

2,294.83

2,294.19

2,293.55

2,292.91

2,292.27

2,291.63

2,291.00

2,290.36

2,289.72

2,289.08

2,288.44

2,287.80

2,287.17

2,286.53

2,285.89

2,285.25

2,284.62

2,283.98

2,283.34

2,282.70

2,282.07

2,281.43

2,280.79

BCD

–447

–446

–445

–444

–443

–442

–441

–440

–439

–438

–437

–436

–435

–434

–433

–432

–431

–430

–429

–428

–427

–426

–425

–424

–423

–422

–421

–420

–419

–418

–417

–416

–415

–414

–413

–412

–411

–410

–409

–408

–407

–406

–405

–404

–403

–402

–401

–400

–399

–398

FREQUENCY

2,280.15

2,279.52

2,278.88

2,278.24

2,277.61

2,276.97

2,276.33

2,275.70

2,275.06

2,274.42

2,273.79

2,273.15

2,272.51

2,271.88

2,271.24

2,270.61

2,269.97

2,269.33

2,268.70

2,268.06

2,267.43

2,266.79

2,266.16

2,265.52

2,264.89

2,264.25

2,263.61

2,262.98

2,262.34

2,261.71

2,261.07

2,260.44

2,259.80

2,259.17

2,258.53

2,257.90

2,257.27

2,256.63

2,256.00

2,255.36

2,254.73

2,254.09

2,253.46

2,252.82

2,252.19

2,251.56

2,250.92

2,250.29

2,249.65

2,249.02

D

E

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

E

0F

10

11

E

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

8-16

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

–397

–396

–395

–394

–393

–392

–391

–390

–389

–388

–387

–386

–385

–384

–383

–382

–381

–380

–379

–378

–377

–376

–375

–374

–373

–372

–371

–370

–369

–368

–367

–366

–365

–364

–363

–362

–361

–360

–359

–358

–357

–356

–355

–354

–353

–352

–351

–350

–349

–348

FREQUENCY

2,248.39

2,247.75

2,247.12

2,246.49

2,245.85

2,245.22

2,244.59

2,243.95

2,243.32

2,242.69

2,242.05

2,241.42

2,240.79

2,240.15

2,239.52

2,238.89

2,238.26

2,237.62

2,236.99

2,236.36

2,235.72

2,235.09

2,234.46

2,233.83

2,233.20

2,232.56

2,231.93

2,231.30

2,230.67

2,230.03

2,229.40

2,228.77

2,228.14

2,227.51

2,226.88

2,226.24

2,225.61

2,224.98

2,224.35

2,223.72

2,223.09

2,222.45

2,221.82

2,221.19

2,220.56

2,219.93

2,219.30

2,218.67

2,218.04

2,217.41

BCD

–347

–346

–345

–344

–343

–342

–341

–340

–339

–338

–337

–336

–335

–334

–333

–332

–331

–330

–329

–328

–327

–326

–325

–324

–323

–322

–321

–320

–319

–318

–317

–316

–315

–314

–313

–312

–311

–310

–309

–308

–307

–306

–305

–304

–303

–302

–301

–300

–299

–298

FREQUENCY

2,216.78

2,216.14

2,215.51

2,214.88

2,214.25

2,213.62

2,212.99

2,212.36

2,211.73

2,211.10

2,210.47

2,209.84

2,209.21

2,208.58

2,207.95

2,207.32

2,206.69

2,206.06

2,205.43

2,204.80

2,204.17

2,203.54

2,202.91

2,202.28

2,201.65

2,201.02

2,200.39

2,199.76

2,199.13

2,198.50

2,197.87

2,197.24

2,196.62

2,195.99

2,195.36

2,194.73

2,194.10

2,193.47

2,192.84

2,192.21

2,191.58

2,190.95

2,190.33

2,189.70

2,189.07

2,188.44

2,187.81

2,187.18

2,186.55

2,185.93

BCD

–297

–296

–295

–294

–293

–292

–291

–290

–289

–288

–287

–286

–285

–284

–283

–282

–281

–280

–279

–278

–277

–276

–275

–274

–273

–272

–271

–270

–269

–268

–267

–266

–265

–264

–263

–262

–261

–260

–259

–258

–257

–256

–255

–254

–253

–252

–251

–250

–249

–248

FREQUENCY

2,185.30

2,184.67

2,184.04

2,183.41

2,182.79

2,182.16

2,181.53

2,180.90

2,180.27

2,179.64

2,179.02

2,178.39

2,177.76

2,177.13

2,176.51

2,175.88

2,175.25

2,174.62

2,174.00

2,173.37

2,172.74

2,172.11

2,171.49

2,170.86

2,170.23

2,169.60

2,168.98

2,168.35

2,167.72

2,167.09

2,166.47

2,165.84

2,165.21

2,164.59

2,163.96

2,163.33

2,162.71

2,162.08

2,161.45

2,160.83

2,160.20

2,159.57

2,158.95

2,158.32

2,157.69

2,157.07

2,156.44

2,155.81

2,155.19

2,154.56

E

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

E

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

E

F

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

MOTOROLA

MC145540

8-17

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

–247

–246

–245

–244

–243

–242

–241

–240

–239

–238

–237

–236

–235

–234

–233

–232

–231

–230

–229

–228

–227

–226

–225

–224

–223

–222

–221

–220

–219

–218

–217

–216

–215

–214

–213

–212

–211

–210

–209

–208

–207

–206

–205

–204

–203

–202

–201

–200

–199

–198

FREQUENCY

2,153.93

2,153.31

2,152.68

2,152.06

2,151.43

2,150.80

2,150.18

2,149.55

2,148.93

2,148.30

2,147.67

2,147.05

2,146.42

2,145.80

2,145.17

2,144.54

2,143.92

2,143.29

2,142.67

2,142.04

2,141.42

2,140.79

2,140.17

2,139.54

2,138.91

2,138.29

2,137.66

2,137.04

2,136.41

2,135.79

2,135.16

2,134.54

2,133.91

2,133.29

2,132.66

2,132.04

2,131.41

2,130.79

2,130.16

2,129.54

2,128.91

2,128.29

2,127.66

2,127.04

2,126.41

2,125.79

2,125.16

2,124.54

2,123.91

2,123.29

BCD

–197

–196

–195

–194

–193

–192

–191

–190

–189

–188

–187

–186

–185

–184

–183

–182

–181

–180

–179

–178

–177

–176

–175

–174

–173

–172

–171

–170

–169

–168

–167

–166

–165

–164

–163

–162

–161

–160

–159

–158

–157

–156

–155

–154

–153

–152

–151

–150

–149

–148

FREQUENCY

2,122.66

2,122.04

2,121.42

2,120.79

2,120.17

2,119.54

2,118.92

2,118.29

2,117.67

2,117.04

2,116.42

2,115.80

2,115.17

2,114.55

2,113.92

2,113.30

2,112.67

2,112.05

2,111.43

2,110.80

2,110.18

2,109.55

2,108.93

2,108.31

2,107.68

2,107.06

2,106.43

2,105.81

2,105.19

2,104.56

2,103.94

2,103.32

2,102.69

2,102.07

2,101.44

2,100.82

2,100.20

2,099.57

2,098.95

2,098.33

2,097.70

2,097.08

2,096.46

2,095.83

2,095.21

2,094.59

2,093.96

2,093.34

2,092.72

2,092.09

BCD

–147

–146

–145

–144

–143

–142

–141

–140

–139

–138

–137

–136

–135

–134

–133

–132

–131

–130

–129

–128

–127

–126

–125

–124

–123

–122

–121

–120

–119

–118

–117

–116

–115

–114

–113

–112

–111

–110

–109

–108

–107

–106

–105

–104

–103

–102

–101

–100

–99

FREQUENCY

2,091.47

2,090.85

2,090.22

2,089.60

2,088.98

2,088.35

2,087.73

2,087.11

2,086.48

2,085.86

2,085.24

2,084.61

2,083.99

2,083.37

2,082.74

2,082.12

2,081.50

2,080.88

2,080.25

2,079.63

2,079.01

2,078.38

2,077.76

2,077.14

2,076.52

2,075.89

2,075.27

2,074.65

2,074.02

2,073.40

2,072.78

2,072.16

2,071.53

2,070.91

2,070.29

2,069.67

2,069.04

2,068.42

2,067.80

2,067.17

2,066.55

2,065.93

2,065.31

2,064.68

2,064.06

2,063.44

2,062.82

2,062.19

2,061.57

2,060.95

F

09

0A

0B

0C

0D

0E

0F

10

11

F

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

F

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

–98

8-18

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

–97

–96

–95

–94

–93

–92

–91

–90

–89

–88

–87

–86

–85

–84

–83

–82

–81

–80

–79

–78

–77

–76

–75

–74

–73

–72

–71

–70

–69

–68

–67

–66

–65

–64

–63

–62

–61

–60

–59

–58

–57

–56

–55

–54

–53

–52

–51

–50

–49

–48

FREQUENCY

2,060.33

2,059.70

2,059.08

2,058.46

2,057.84

2,057.22

2,056.59

2,055.97

2,055.35

2,054.73

2,054.10

2,053.48

2,052.86

2,052.24

2,051.62

2,050.99

2,050.37

2,049.75

2,049.13

2,048.50

2,047.88

2,047.26

2,046.64

2,046.02

2,045.39

2,044.77

2,044.15

2,043.53

2,042.91

2,042.28

2,041.66

2,041.04

2,040.42

2,039.80

2,039.17

2,038.55

2,037.93

2,037.31

2,036.69

2,036.06

2,035.44

2,034.82

2,034.20

2,033.58

2,032.95

2,032.33

2,031.71

2,031.09

2,030.47

2,029.84

BCD

–47

–46

–45

–44

–43

–42

–41

–40

–39

–38

–37

–36

–35

–34

–33

–32

–31

–30

–29

–28

–27

–26

–25

–24

–23

–22

–21

–20

–19

–18

–17

–16

–15

–14

–13

–12

–11

–10

–9

FREQUENCY

2,029.22

2,028.60

2,027.98

2,027.36

2,026.74

2,026.11

2,025.49

2,024.87

2,024.25

2,023.63

2,023.00

2,022.38

2,021.76

2,021.14

2,020.52

2,019.90

2,019.27

2,018.65

2,018.03

2,017.41

2,016.79

2,016.16

2,015.54

2,014.92

2,014.30

2,013.68

2,013.06

2,012.43

2,011.81

2,011.19

2,010.57

2,009.95

2,009.33

2,008.70

2,008.08

2,007.46

2,006.84

2,006.22

2,005.60

2,004.97

2,004.35

2,003.73

2,003.11

2,002.49

2,001.87

2,001.24

2,000.62

2,000.00

1,999.38

1,998.76

BCD

3

FREQUENCY

1,998.13

1,997.51

1,996.89

1,996.27

1,995.65

1,995.03

1,994.40

1,993.78

1,993.16

1,992.54

1,991.92

1,991.30

1,990.67

1,990.05

1,989.43

1,988.81

1,988.19

1,987.57

1,986.94

1,986.32

1,985.70

1,985.08

1,984.46

1,983.84

1,983.21

1,982.59

1,981.97

1,981.35

1,980.73

1,980.10

1,979.48

1,978.86

1,978.24

1,977.62

1,977.00

1,976.37

1,975.75

1,975.13

1,974.51

1,973.89

1,973.26

1,972.64

1,972.02

1,971.40

1,970.78

1,970.16

1,969.53

1,968.91

1,968.29

1,967.67

F

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

F

0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

0

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

–8

–7

–6

–5

–4

–3

–2

–1

0

1

01

2

02

MOTOROLA

MC145540

8-19

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

FREQUENCY

1,967.05

1,966.42

1,965.80

1,965.18

1,964.56

1,963.94

1,963.31

1,962.69

1,962.07

1,961.45

1,960.83

1,960.20

1,959.58

1,958.96

1,958.34

1,957.72

1,957.09

1,956.47

1,955.85

1,955.23

1,954.61

1,953.98

1,953.36

1,952.74

1,952.12

1,951.50

1,950.87

1,950.25

1,949.63

1,949.01

1,948.38

1,947.76

1,947.14

1,946.52

1,945.90

1,945.27

1,944.65

1,944.03

1,943.41

1,942.78

1,942.16

1,941.54

1,940.92

1,940.30

1,939.67

1,939.05

1,938.43

1,937.81

1,937.18

1,936.56

BCD

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

FREQUENCY

1,935.94

1,935.32

1,934.69

1,934.07

1,933.45

1,932.83

1,932.20

1,931.58

1,930.96

1,930.33

1,929.71

1,929.09

1,928.47

1,927.84

1,927.22

1,926.60

1,925.98

1,925.35

1,924.73

1,924.11

1,923.48

1,922.86

1,922.24

1,921.62

1,920.99

1,920.37

1,919.75

1,919.12

1,918.50

1,917.88

1,917.26

1,916.63

1,916.01

1,915.39

1,914.76

1,914.14

1,913.52

1,912.89

1,912.27

1,911.65

1,911.02

1,910.40

1,909.78

1,909.15

1,908.53

1,907.91

1,907.28

1,906.66

1,906.04

1,905.41

BCD

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

FREQUENCY

1,904.79

1,904.17

1,903.54

1,902.92

1,902.30

1,901.67

1,901.05

1,900.43

1,899.80

1,899.18

1,898.56

1,897.93

1,897.31

1,896.68

1,896.06

1,895.44

1,894.81

1,894.19

1,893.57

1,892.94

1,892.32

1,891.69

1,891.07

1,890.45

1,889.82

1,889.20

1,888.57

1,887.95

1,887.33

1,886.70

1,886.08

1,885.45

1,884.83

1,884.20

1,883.58

1,882.96

1,882.33

1,881.71

1,881.08

1,880.46

1,879.83

1,879.21

1,878.58

1,877.96

1,877.34

1,876.71

1,876.09

1,875.46

1,874.84

1,874.21

0

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

0

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

0

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

8-20

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

FREQUENCY

1,873.59

1,872.96

1,872.34

1,871.71

1,871.09

1,870.46

1,869.84

1,869.21

1,868.59

1,867.96

1,867.34

1,866.71

1,866.09

1,865.46

1,864.84

1,864.21

1,863.59

1,862.96

1,862.34

1,861.71

1,861.09

1,860.46

1,859.83

1,859.21

1,858.58

1,857.96

1,857.33

1,856.71

1,856.08

1,855.46

1,854.83

1,854.20

1,853.58

1,852.95

1,852.33

1,851.70

1,851.07

1,850.45

1,849.82

1,849.20

1,848.57

1,847.94

1,847.32

1,846.69

1,846.07

1,845.44

1,844.81

1,844.19

1,843.56

1,842.93

BCD

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

FREQUENCY

1,842.31

1,841.68

1,841.05

1,840.43

1,839.80

1,839.17

1,838.55

1,837.92

1,837.29

1,836.67

1,836.04

1,835.41

1,834.79

1,834.16

1,833.53

1,832.91

1,832.28

1,831.65

1,831.02

1,830.40

1,829.77

1,829.14

1,828.51

1,827.89

1,827.26

1,826.63

1,826.00

1,825.38

1,824.75

1,824.12

1,823.49

1,822.87

1,822.24

1,821.61

1,820.98

1,820.36

1,819.73

1,819.10

1,818.47

1,817.84

1,817.21

1,816.59

1,815.96

1,815.33

1,814.70

1,814.07

1,813.45

1,812.82

1,812.19

1,811.56

BCD

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

FREQUENCY

1,810.93

1,810.30

1,809.67

1,809.05

1,808.42

1,807.79

1,807.16

1,806.53

1,805.90

1,805.27

1,804.64

1,804.01

1,803.38

1,802.76

1,802.13

1,801.50

1,800.87

1,800.24

1,799.61

1,798.98

1,798.35

1,797.72

1,797.09

1,796.46

1,795.83

1,795.20

1,794.57

1,793.94

1,793.31

1,792.68

1,792.05

1,791.42

1,790.79

1,790.16

1,789.53

1,788.90

1,788.27

1,787.64

1,787.01

1,786.38

1,785.75

1,785.12

1,784.49

1,783.86

1,783.22

1,782.59

1,781.96

1,781.33

1,780.70

1,780.07

0

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

0

1

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

1

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

MOTOROLA

MC145540

8-21

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

FREQUENCY

1,779.44

1,778.81

1,778.18

1,777.55

1,776.91

1,776.28

1,775.65

1,775.02

1,774.39

1,773.76

1,773.12

1,772.49

1,771.86

1,771.23

1,770.60

1,769.97

1,769.33

1,768.70

1,768.07

1,767.44

1,766.80

1,766.17

1,765.54

1,764.91

1,764.28

1,763.64

1,763.01

1,762.38

1,761.74

1,761.11

1,760.48

1,759.85

1,759.21

1,758.58

1,757.95

1,757.31

1,756.68

1,756.05

1,755.41

1,754.78

1,754.15

1,753.51

1,752.88

1,752.25

1,751.61

1,750.98

1,750.35

1,749.71

1,749.08

1,748.44

BCD

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

FREQUENCY

1,747.81

1,747.18

1,746.54

1,745.91

1,745.27

1,744.64

1,744.00

1,743.37

1,742.73

1,742.10

1,741.47

1,740.83

1,740.20

1,739.56

1,738.93

1,738.29

1,737.66

1,737.02

1,736.39

1,735.75

1,735.11

1,734.48

1,733.84

1,733.21

1,732.57

1,731.94

1,731.30

1,730.67

1,730.03

1,729.39

1,728.76

1,728.12

1,727.49

1,726.85

1,726.21

1,725.58

1,724.94

1,724.30

1,723.67

1,723.03

1,722.39

1,721.76

1,721.12

1,720.48

1,719.85

1,719.21

1,718.57

1,717.93

1,717.30

1,716.66

BCD

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

FREQUENCY

1,716.02

1,715.38

1,714.75

1,714.11

1,713.47

1,712.83

1,712.20

1,711.56

1,710.92

1,710.28

1,709.64

1,709.00

1,708.37

1,707.73

1,707.09

1,706.45

1,705.81

1,705.17

1,704.54

1,703.90

1,703.26

1,702.62

1,701.98

1,701.34

1,700.70

1,700.06

1,699.42

1,698.78

1,698.14

1,697.50

1,696.86

1,696.22

1,695.58

1,694.94

1,694.30

1,693.66

1,693.02

1,692.38

1,691.74

1,691.10

1,690.46

1,689.82

1,689.18

1,688.54

1,687.90

1,687.26

1,686.62

1,685.98

1,685.34

1,684.69

1

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

1

93

94

1

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

F1

F2

F3

F4

F5

F6

8-22

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

FREQUENCY

1,684.05

1,683.41

1,682.77

1,682.13

1,681.49

1,680.85

1,680.20

1,679.56

1,678.92

1,678.28

1,677.64

1,676.99

1,676.35

1,675.71

1,675.07

1,674.42

1,673.78

1,673.14

1,672.50

1,671.85

1,671.21

1,670.57

1,669.92

1,669.28

1,668.64

1,667.99

1,667.35

1,666.71

1,666.06

1,665.42

1,664.77

1,664.13

1,663.49

1,662.84

1,662.20

1,661.55

1,660.91

1,660.27

1,659.62

1,658.98

1,658.33

1,657.69

1,657.04

1,656.40

1,655.75

1,655.11

1,654.46

1,653.82

1,653.17

1,652.52

BCD

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

FREQUENCY

1,651.88

1,651.23

1,650.59

1,649.94

1,649.30

1,648.65

1,648.00

1,647.36

1,646.71

1,646.06

1,645.42

1,644.77

1,644.12

1,643.48

1,642.83

1,642.18

1,641.54

1,640.89

1,640.24

1,639.59

1,638.95

1,638.30

1,637.65

1,637.00

1,636.36

1,635.71

1,635.06

1,634.41

1,633.76

1,633.12

1,632.47

1,631.82

1,631.17

1,630.52

1,629.87

1,629.22

1,628.57

1,627.92

1,627.28

1,626.63

1,625.98

1,625.33

1,624.68

1,624.03

1,623.38

1,622.73

1,622.08

1,621.43

1,620.78

1,620.13

BCD

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

FREQUENCY

1,619.48

1,618.83

1,618.17

1,617.52

1,616.87

1,616.22

1,615.57

1,614.92

1,614.27

1,613.62

1,612.97

1,612.31

1,611.66

1,611.01

1,610.36

1,609.71

1,609.05

1,608.40

1,607.75

1,607.10

1,606.44

1,605.79

1,605.14

1,604.49

1,603.83

1,603.18

1,602.53

1,601.87

1,601.22

1,600.57

1,599.91

1,599.26

1,598.61

1,597.95

1,597.30

1,596.64

1,595.99

1,595.33

1,594.68

1,594.03

1,593.37

1,592.72

1,592.06

1,591.41

1,590.75

1,590.09

1,589.44

1,588.78

1,588.13

1,587.47

1

2

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

2

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

2

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

MOTOROLA

MC145540

8-23

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

FREQUENCY

1,586.82

1,586.16

1,585.50

1,584.85

1,584.19

1,583.54

1,582.88

1,582.22

1,581.57

1,580.91

1,580.25

1,579.59

1,578.94

1,578.28

1,577.62

1,576.96

1,576.31

1,575.65

1,574.99

1,574.33

1,573.67

1,573.02

1,572.36

1,571.70

1,571.04

1,570.38

1,569.72

1,569.06

1,568.41

1,567.75

1,567.09

1,566.43

1,565.77

1,565.11

1,564.45

1,563.79

1,563.13

1,562.47

1,561.81

1,561.15

1,560.49

1,559.83

1,559.16

1,558.50

1,557.84

1,557.18

1,556.52

1,555.86

1,555.20

1,554.53

BCD

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

FREQUENCY

1,553.87

1,553.21

1,552.55

1,551.89

1,551.22

1,550.56

1,549.90

1,549.24

1,548.57

1,547.91

1,547.25

1,546.58

1,545.92

1,545.26

1,544.59

1,543.93

1,543.27

1,542.60

1,541.94

1,541.27

1,540.61

1,539.94

1,539.28

1,538.62

1,537.95

1,537.28

1,536.62

1,535.95

1,535.29

1,534.62

1,533.96

1,533.29

1,532.63

1,531.96

1,531.29

1,530.63

1,529.96

1,529.29

1,528.63

1,527.96

1,527.29

1,526.63

1,525.96

1,525.29

1,524.62

1,523.96

1,523.29

1,522.62

1,521.95

1,521.28

BCD

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

FREQUENCY

1,520.61

1,519.95

1,519.28

1,518.61

1,517.94

1,517.27

1,516.60

1,515.93

1,515.26

1,514.59

1,513.92

1,513.25

1,512.58

1,511.91

1,511.24

1,510.57

1,509.90

1,509.23

1,508.56

1,507.89

1,507.22

1,506.54

1,505.87

1,505.20

1,504.53

1,503.86

1,503.19

1,502.51

1,501.84

1,501.17

1,500.50

1,499.82

1,499.15

1,498.48

1,497.80

1,497.13

1,496.46

1,495.78

1,495.11

1,494.43

1,493.76

1,493.09

1,492.41

1,491.74

1,491.06

1,490.39

1,489.71

1,489.04

1,488.36

1,487.68

2

8D

8E

8F

90

2

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

2

3

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

8-24

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

FREQUENCY

1,487.01

1,486.33

1,485.66

1,484.98

1,484.30

1,483.63

1,482.95

1,482.27

1,481.60

1,480.92

1,480.24

1,479.57

1,478.89

1,478.21

1,477.53

1,476.85

1,476.18

1,475.50

1,474.82

1,474.14

1,473.46

1,472.78

1,472.10

1,471.42

1,470.74

1,470.07

1,469.39

1,468.71

1,468.03

1,467.34

1,466.66

1,465.98

1,465.30

1,464.62

1,463.94

1,463.26

1,462.58

1,461.90

1,461.21

1,460.53

1,459.85

1,459.17

1,458.49

1,457.80

1,457.12

1,456.44

1,455.75

1,455.07

1,454.39

1,453.70

BCD

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

FREQUENCY

1,453.02

1,452.34

1,451.65

1,450.97

1,450.28

1,449.60

1,448.91

1,448.23

1,447.54

1,446.86

1,446.17

1,445.49

1,444.80

1,444.12

1,443.43

1,442.74

1,442.06

1,441.37

1,440.68

1,440.00

1,439.31

1,438.62

1,437.94

1,437.25

1,436.56

1,435.87

1,435.18

1,434.49

1,433.81

1,433.12

1,432.43

1,431.74

1,431.05

1,430.36

1,429.67

1,428.98

1,428.29

1,427.60

1,426.91

1,426.22

1,425.53

1,424.84

1,424.15

1,423.46

1,422.76

1,422.07

1,421.38

1,420.69

1,420.00

1,419.30

BCD

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

FREQUENCY

1,418.61

1,417.92

1,417.23

1,416.53

1,415.84

1,415.15

1,414.45

1,413.76

1,413.06

1,412.37

1,411.68

1,410.98

1,410.29

1,409.59

1,408.90

1,408.20

1,407.51

1,406.81

1,406.11

1,405.42

1,404.72

1,404.02

1,403.33

1,402.63

1,401.93

1,401.24

1,400.54

1,399.84

1,399.14

1,398.45

1,397.75

1,397.05

1,396.35

1,395.65

1,394.95

1,394.25

1,393.55

1,392.85

1,392.15

1,391.45

1,390.75

1,390.05

1,389.35

1,388.65

1,387.95

1,387.25

1,386.55

1,385.85

1,385.14

1,384.44

3

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

3

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

3

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

MOTOROLA

MC145540

8-25

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

991

992

993

994

995

996

997

998

999

1000

1001

1002

FREQUENCY

1,383.74

1,383.04

1,382.33

1,381.63

1,380.93

1,380.23

1,379.52

1,378.82

1,378.11

1,377.41

1,376.71

1,376.00

1,375.30

1,374.59

1,373.89

1,373.18

1,372.48

1,371.77

1,371.06

1,370.36

1,369.65

1,368.94

1,368.24

1,367.53

1,366.82

1,366.12

1,365.41

1,364.70

1,363.99

1,363.28

1,362.57

1,361.87

1,361.16

1,360.45

1,359.74

1,359.03

1,358.32

1,357.61

1,356.90

1,356.19

1,355.48

1,354.77

1,354.06

1,353.34

1,352.63

1,351.92

1,351.21

1,350.50

1,349.78

1,349.07

BCD

1003

1004

1005

1006

1007

1008

1009

1010

1011

1012

1013

1014

1015

1016

1017

1018

1019

1020

1021

1022

1023

1024

1025

1026

1027

1028

1029

1030

1031

1032

1033

1034

1035

1036

1037

1038

1039

1040

1041

1042

1043

1044

1045

1046

1047

1048

1049

1050

1051

1052

FREQUENCY

1,348.36

1,347.64

1,346.93

1,346.22

1,345.50

1,344.79

1,344.08

1,343.36

1,342.65

1,341.93

1,341.22

1,340.50

1,339.78

1,339.07

1,338.35

1,337.64

1,336.92

1,336.20

1,335.49

1,334.77

1,334.05

1,333.33

1,332.62

1,331.90

1,331.18

1,330.46

1,329.74

1,329.02

1,328.30

1,327.58

1,326.86

1,326.14

1,325.42

1,324.70

1,323.98

1,323.26

1,322.54

1,321.82

1,321.10

1,320.37

1,319.65

1,318.93

1,318.21

1,317.48

1,316.76

1,316.04

1,315.31

1,314.59

1,313.86

1,313.14

BCD

1053

1054

1055

1056

1057

1058

1059

1060

1061

1062

1063

1064

1065

1066

1067

1068

1069

1070

1071

1072

1073

1074

1075

1076

1077

1078

1079

1080

1081

1082

1083

1084

1085

1086

1087

1088

1089

1090

1091

1092

1093

1094

1095

1096

1097

1098

1099

1100

1101

1102

FREQUENCY

1,312.41

1,311.69

1,310.96

1,310.24

1,309.51

1,308.79

1,308.06

1,307.33

1,306.61

1,305.88

1,305.15

1,304.43

1,303.70

1,302.97

1,302.24

1,301.51

1,300.79

1,300.06

1,299.33

1,298.60

1,297.87

1,297.14

1,296.41

1,295.68

1,294.95

1,294.21

1,293.48

1,292.75

1,292.02

1,291.29

1,290.56

1,289.82

1,289.09

1,288.36

1,287.62

1,286.89

1,286.16

1,285.42

1,284.69

1,283.95

1,283.22

1,282.48

1,281.75

1,281.01

1,280.27

1,279.54

1,278.80

1,278.06

1,277.33

1,276.59

3

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

3

4

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

4

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

12

13

14

15

16

17

18

19

1A

1B

1C

8-26

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

1103

1104

1105

1106

1107

1108

1109

1110

1111

1112

1113

1114

1115

1116

1117

1118

1119

1120

1121

1122

1123

1124

1125

1126

1127

1128

1129

1130

1131

1132

1133

1134

1135

1136

1137

1138

1139

1140

1141

1142

1143

1144

1145

1146

1147

1148

1149

1150

1151

1152

FREQUENCY

1,275.85

1,275.11

1,274.38

1,273.64

1,272.90

1,272.16

1,271.42

1,270.68

1,269.94

1,269.20

1,268.46

1,267.72

1,266.98

1,266.24

1,265.50

1,264.75

1,264.01

1,263.27

1,262.53

1,261.78

1,261.04

1,260.30

1,259.55

1,258.81

1,258.06

1,257.32

1,256.57

1,255.83

1,255.08

1,254.34

1,253.59

1,252.85

1,252.10

1,251.35

1,250.60

1,249.86

1,249.11

1,248.36

1,247.61

1,246.86

1,246.11

1,245.36

1,244.61

1,243.86

1,243.11

1,242.36

1,241.61

1,240.86

1,240.11

1,239.36

BCD

1153

1154

1155

1156

1157

1158

1159

1160

1161

1162

1163

1164

1165

1166

1167

1168

1169

1170

1171

1172

1173

1174

1175

1176

1177

1178

1179

1180

1181

1182

1183

1184

1185

1186

1187

1188

1189

1190

1191

1192

1193

1194

1195

1196

1197

1198

1199

1200

1201

1202

FREQUENCY

1,238.61

1,237.85

1,237.10

1,236.35

1,235.60

1,234.84

1,234.09

1,233.33

1,232.58

1,231.82

1,231.07

1,230.31

1,229.56

1,228.80

1,228.05

1,227.29

1,226.53

1,225.77

1,225.02

1,224.26

1,223.50

1,222.74

1,221.98

1,221.22

1,220.46

1,219.70

1,218.94

1,218.18

1,217.42

1,216.66

1,215.90

1,215.14

1,214.38

1,213.61

1,212.85

1,212.09

1,211.32

1,210.56

1,209.80

1,209.03

1,208.27

1,207.50

1,206.74

1,205.97

1,205.21

1,204.44

1,203.67

1,202.91

1,202.14

1,201.37

BCD

1203

1204

1205

1206

1207

1208

1209

1210

1211

1212

1213

1214

1215

1216

1217

1218

1219

1220

1221

1222

1223

1224

1225

1226

1227

1228

1229

1230

1231

1232

1233

1234

1235

1236

1237

1238

1239

1240

1241

1242

1243

1244

1245

1246

1247

1248

1249

1250

1251

1252

FREQUENCY

1,200.60

1,199.83

1,199.07

1,198.30

1,197.53

1,196.76

1,195.99

1,195.22

1,194.45

1,193.68

1,192.90

1,192.13

1,191.36

1,190.59

1,189.81

1,189.04

1,188.27

1,187.49

1,186.72

1,185.95

1,185.17

1,184.40

1,183.62

1,182.84

1,182.07

1,181.29

1,180.51

1,179.74

1,178.96

1,178.18

1,177.40

1,176.62

1,175.84

1,175.06

1,174.28

1,173.50

1,172.72

1,171.94

1,171.16

1,170.38

1,169.60

1,168.82

1,168.03

1,167.25

1,166.47

1,165.68

1,164.90

1,164.11

1,163.33

1,162.54

4

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

4

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

4

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

MOTOROLA

MC145540

8-27

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

1253

1254

1255

1256

1257

1258

1259

1260

1261

1262

1263

1264

1265

1266

1267

1268

1269

1270

1271

1272

1273

1274

1275

1276

1277

1278

1279

1280

1281

1282

1283

1284

1285

1286

1287

1288

1289

1290

1291

1292

1293

1294

1295

1296

1297

1298

1299

1300

1301

1302

FREQUENCY

1,161.76

1,160.97

1,160.18

1,159.40

1,158.61

1,157.82

1,157.03

1,156.25

1,155.46

1,154.67

1,153.88

1,153.09

1,152.30

1,151.51

1,150.72

1,149.92

1,149.13

1,148.34

1,147.55

1,146.75

1,145.96

1,145.17

1,144.37

1,143.58

1,142.78

1,141.99

1,141.19

1,140.40

1,139.60

1,138.80

1,138.00

1,137.21

1,136.41

1,135.61

1,134.81

1,134.01

1,133.21

1,132.41

1,131.61

1,130.81

1,130.01

1,129.21

1,128.40

1,127.60

1,126.80

1,125.99

1,125.19

1,124.39

1,123.58

1,122.78

BCD

1303

1304

1305

1306

1307

1308

1309

1310

1311

1312

1313

1314

1315

1316

1317

1318

1319

1320

1321

1322

1323

1324

1325

1326

1327

1328

1329

1330

1331

1332

1333

1334

1335

1336

1337

1338

1339

1340

1341

1342

1343

1344

1345

1346

1347

1348

1349

1350

1351

1352

FREQUENCY

1,121.97

1,121.16

1,120.36

1,119.55

1,118.74

1,117.94

1,117.13

1,116.32

1,115.51

1,114.70

1,113.89

1,113.08

1,112.27

1,111.46

1,110.65

1,109.84

1,109.02

1,108.21

1,107.40

1,106.58

1,105.77

1,104.95

1,104.14

1,103.32

1,102.51

1,101.69

1,100.87

1,100.06

1,099.24

1,098.42

1,097.60

1,096.78

1,095.96

1,095.14

1,094.32

1,093.50

1,092.68

1,091.86

1,091.04

1,090.21

1,089.39

1,088.57

1,087.74

1,086.92

1,086.09

1,085.27

1,084.44

1,083.61

1,082.79

1,081.96

BCD

1353

1354

1355

1356

1357

1358

1359

1360

1361

1362

1363

1364

1365

1366

1367

1368

1369

1370

1371

1372

1373

1374

1375

1376

1377

1378

1379

1380

1381

1382

1383

1384

1385

1386

1387

1388

1389

1390

1391

1392

1393

1394

1395

1396

1397

1398

1399

1400

1401

1402

FREQUENCY

1,081.13

1,080.30

1,079.48

1,078.65

1,077.82

1,076.99

1,076.15

1,075.32

1,074.49

1,073.66

1,072.83

1,071.99

1,071.16

1,070.33

1,069.49

1,068.66

1,067.82

1,066.98

1,066.15

1,065.31

1,064.47

1,063.63

1,062.80

1,061.96

1,061.12

1,060.28

1,059.44

1,058.60

1,057.75

1,056.91

1,056.07

1,055.23

1,054.38

1,053.54

1,052.69

1,051.85

1,051.00

1,050.16

1,049.31

1,048.46

1,047.61

1,046.77

1,045.92

1,045.07

1,044.22

1,043.37

1,042.52

1,041.66

1,040.81

1,039.96

4

5

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

5

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

43

44

45

46

47

48

5

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

75

76

77

78

79

7A

12

13

14

15

16

8-28

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

1403

1404

1405

1406

1407

1408

1409

1410

1411

1412

1413

1414

1415

1416

1417

1418

1419

1420

1421

1422

1423

1424

1425

1426

1427

1428

1429

1430

1431

1432

1433

1434

1435

1436

1437

1438

1439

1440

1441

1442

1443

1444

1445

1446

1447

1448

1449

1450

1451

1452

FREQUENCY

1,039.11

1,038.25

1,037.40

1,036.54

1,035.69

1,034.83

1,033.98

1,033.12

1,032.26

1,031.40

1,030.55

1,029.69

1,028.83

1,027.97

1,027.11

1,026.24

1,025.38

1,024.52

1,023.66

1,022.79

1,021.93

1,021.06

1,020.20

1,019.33

1,018.47

1,017.60

1,016.73

1,015.86

1,014.99

1,014.13

1,013.26

1,012.38

1,011.51

1,010.64

1,009.77

1,008.90

1,008.02

1,007.15

1,006.28

1,005.40

1,004.52

1,003.65

1,002.77

1,001.89

1,001.01

1,000.14

999.26

BCD

1453

1454

1455

1456

1457

1458

1459

1460

1461

1462

1463

1464

1465

1466

1467

1468

1469

1470

1471

1472

1473

1474

1475

1476

1477

1478

1479

1480

1481

1482

1483

1484

1485

1486

1487

1488

1489

1490

1491

1492

1493

1494

1495

1496

1497

1498

1499

1500

1501

1502

FREQUENCY

995.73

994.85

993.97

993.08

992.20

991.31

990.43

989.54

988.66

987.77

986.88

985.99

985.10

984.21

983.32

982.43

981.54

980.65

979.75

978.86

977.96

977.07

976.17

975.28

974.38

973.48

972.58

971.68

970.78

969.88

968.98

968.08

967.18

966.28

965.37

964.47

963.56

962.66

961.75

960.84

959.93

959.03

958.12

957.21

956.30

955.38

954.47

953.56

952.65

951.73

BCD

1503

1504

1505

1506

1507

1508

1509

1510

1511

1512

1513

1514

1515

1516

1517

1518

1519

1520

1521

1522

1523

1524

1525

1526

1527

1528

1529

1530

1531

1532

1533

1534

1535

1536

1537

1538

1539

1540

1541

1542

1543

1544

1545

1546

1547

1548

1549

1550

1551

1552

FREQUENCY

950.82

949.90

948.99

948.07

947.15

946.23

945.31

944.39

943.47

942.55

941.63

940.71

939.78

938.86

937.93

937.01

936.08

935.15

934.23

933.30

932.37

931.44

930.51

929.57

928.64

927.71

926.77

925.84

924.90

923.97

923.03

922.09

921.15

920.21

919.27

918.33

917.39

916.45

915.50

914.56

913.61

912.67

911.72

910.77

909.83

908.88

907.93

906.98

906.03

905.07

5

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

5

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

5

6

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

998.38

997.50

996.61

MOTOROLA

MC145540

8-29

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

1553

1554

1555

1556

1557

1558

1559

1560

1561

1562

1563

1564

1565

1566

1567

1568

1569

1570

1571

1572

1573

1574

1575

1576

1577

1578

1579

1580

1581

1582

1583

1584

1585

1586

1587

1588

1589

1590

1591

1592

1593

1594

1595

1596

1597

1598

1599

1600

1601

1602

FREQUENCY

904.12

903.17

902.21

901.25

900.30

899.34

898.38

897.42

896.46

895.50

894.54

893.58

892.61

891.65

890.69

889.72

888.75

887.78

886.82

885.85

884.88

883.90

882.93

881.96

880.99

880.01

879.04

878.06

877.08

876.10

875.12

874.14

873.16

872.18

871.20

870.21

869.23

868.24

867.25

866.27

865.28

864.29

863.30

862.31

861.31

860.32

859.33

858.33

857.33

856.34

BCD

1603

1604

1605

1606

1607

1608

1609

1610

1611

1612

1613

1614

1615

1616

1617

1618

1619

1620

1621

1622

1623

1624

1625

1626

1627

1628

1629

1630

1631

1632

1633

1634

1635

1636

1637

1638

1639

1640

1641

1642

1643

1644

1645

1646

1647

1648

1649

1650

1651

1652

FREQUENCY

855.34

854.34

853.34

852.34

851.33

850.33

849.33

848.32

847.31

846.31

845.30

844.29

843.28

842.27

841.25

840.24

839.23

838.21

837.19

836.18

835.16

834.14

833.12

832.09

831.07

830.05

829.02

828.00

826.97

825.94

824.91

823.88

822.85

821.81

820.78

819.75

818.71

817.67

816.63

815.59

814.55

813.51

812.47

811.42

810.38

809.33

808.28

807.23

806.18

805.13

BCD

1653

1654

1655

1656

1657

1658

1659

1660

1661

1662

1663

1664

1665

1666

1667

1668

1669

1670

1671

1672

1673

1674

1675

1676

1677

1678

1679

1680

1681

1682

1683

1684

1685

1686

1687

1688

1689

1690

1691

1692

1693

1694

1695

1696

1697

1698

1699

1700

1701

1702

FREQUENCY

804.08

803.03

801.97

800.92

799.86

798.80

797.74

796.68

795.62

794.55

793.49

792.42

791.36

790.29

789.22

788.15

787.08

786.00

784.93

783.85

782.78

781.70

780.62

779.54

778.45

777.37

776.28

775.20

774.11

773.02

771.93

770.84

769.75

768.65

767.56

766.46

765.36

764.26

763.16

762.06

760.95

759.85

758.74

757.63

756.52

755.41

754.30

753.18

752.07

750.95

6

11

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

3D

3E

3F

40

41

42

6

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

6F

70

71

72

73

74

6

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

A1

A2

A3

A4

A5

A6

8-30

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

1703

1704

1705

1706

1707

1708

1709

1710

1711

1712

1713

1714

1715

1716

1717

1718

1719

1720

1721

1722

1723

1724

1725

1726

1727

1728

1729

1730

1731

1732

1733

1734

1735

1736

1737

1738

1739

1740

1741

1742

1743

1744

1745

1746

1747

1748

1749

1750

1751

1752

FREQUENCY

749.83

748.71

747.59

746.47

745.34

744.22

743.09

741.96

740.83

739.70

738.56

737.43

736.29

735.15

734.01

732.87

731.73

730.59

729.44

728.29

727.14

725.99

724.84

723.69

722.53

721.37

720.21

719.05

717.89

716.73

715.56

714.39

713.22

712.05

710.88

709.70

708.53

707.35

706.17

704.99

703.81

702.62

701.43

700.25

699.06

697.86

696.67

695.47

694.28

693.08

BCD

1753

1754

1755

1756

1757

1758

1759

1760

1761

1762

1763

1764

1765

1766

1767

1768

1769

1770

1771

1772

1773

1774

1775

1776

1777

1778

1779

1780

1781

1782

1783

1784

1785

1786

1787

1788

1789

1790

1791

1792

1793

1794

1795

1796

1797

1798

1799

1800

1801

1802

FREQUENCY

691.88

690.67

689.47

688.26

687.05

685.84

684.63

683.41

682.19

680.98

679.76

678.53

677.31

676.08

674.85

673.62

672.39

671.15

669.92

668.68

667.44

666.19

664.95

663.70

662.45

661.20

659.95

658.69

657.43

656.17

654.91

653.64

652.38

651.11

649.84

648.56

647.29

646.01

644.73

643.44

642.16

640.87

639.58

638.29

636.99

635.70

634.40

633.10

631.79

630.48

BCD

1803

1804

1805

1806

1807

1808

1809

1810

1811

1812

1813

1814

1815

1816

1817

1818

1819

1820

1821

1822

1823

1824

1825

1826

1827

1828

1829

1830

1831

1832

1833

1834

1835

1836

1837

1838

1839

1840

1841

1842

1843

1844

1845

1846

1847

1848

1849

1850

1851

1852

FREQUENCY

629.17

627.86

626.55

625.23

623.91

622.59

621.26

619.94

618.61

617.27

615.94

614.60

613.26

611.92

610.57

609.22

607.87

606.51

605.16

603.80

602.43

601.07

599.70

598.33

596.95

595.58

594.20

592.81

591.43

590.04

588.65

587.25

585.85

584.45

583.05

581.64

580.23

578.81

577.40

575.97

574.55

573.12

571.69

570.26

568.82

567.38

565.94

564.49

563.04

561.58

6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

D3

D4

D5

D6

D7

D8

6

7

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

7

0B

0C

0D

0E

0F

10

11

12

13

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

23

24

25

26

27

28

29

2A

2B

2C

2D

2E

2F

30

31

32

33

34

35

36

37

38

39

3A

3B

3C

01

02

03

04

05

06

07

08

09

0A

MOTOROLA

MC145540

8-31

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

1853

1854

1855

1856

1857

1858

1859

1860

1861

1862

1863

1864

1865

1866

1867

1868

1869

1870

1871

1872

1873

1874

1875

1876

1877

1878

1879

1880

1881

1882

1883

1884

1885

1886

1887

1888

1889

1890

1891

1892

1893

1894

1895

1896

1897

1898

1899

1900

1901

1902

FREQUENCY

560.13

558.66

557.20

555.73

554.26

552.78

551.30

549.82

548.33

546.84

545.34

543.85

542.34

540.84

539.33

537.81

536.29

534.77

533.24

531.71

530.18

528.64

527.09

525.55

524.00

522.44

520.88

519.31

517.74

516.17

514.59

513.01

511.42

509.83

508.23

506.63

505.02

503.41

501.79

500.17

498.54

496.91

495.28

493.63

491.99

490.33

488.68

487.01

485.35

483.67

BCD

1903

1904

1905

1906

1907

1908

1909

1910

1911

1912

1913

1914

1915

1916

1917

1918

1919

1920

1921

1922

1923

1924

1925

1926

1927

1928

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

FREQUENCY

481.99

480.31

478.62

476.92

475.22

473.51

471.80

470.08

468.35

466.62

464.88

463.14

461.39

459.63

457.87

456.10

454.32

452.54

450.75

448.95

447.15

445.34

443.52

441.69

439.86

438.02

436.17

434.32

432.46

430.59

428.71

426.82

424.93

423.03

421.12

419.20

417.27

415.34

413.39

411.44

409.48

407.50

405.52

403.53

401.53

399.52

397.51

395.48

393.44

391.39

BCD

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

FREQUENCY

389.33

387.26

385.18

383.08

380.98

378.87

376.74

374.60

372.45

370.29

368.11

365.93

363.73

361.52

359.29

357.05

354.80

352.53

350.25

347.95

345.64

343.31

340.97

338.62

336.24

333.85

331.45

329.02

326.58

324.12

321.64

319.14

316.63

314.09

311.54

308.96

306.36

303.74

301.10

298.43

295.75

293.03

290.29

287.53

284.74

281.92

279.08

276.21

273.30

270.37

7

3D

3E

3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

68

69

6A

6B

6C

6D

6E

7

6F

70

71

72

73

74

75

76

77

78

79

7A

7B

7C

7D

7E

7F

80

81

82

83

84

85

86

87

88

89

8A

8B

8C

8D

8E

8F

90

91

92

93

94

95

96

97

98

99

9A

9B

9C

9D

9E

9F

A0

7

A1

A2

A3

A4

A5

A6

A7

A8

A9

AA

AB

AC

AD

AE

AF

B0

B1

B2

B3

B4

B5

B6

B7

B8

B9

BA

BB

BC

BD

BE

BF

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

CA

CB

CC

CD

CE

CF

D0

D1

D2

8-32

MC145540

MOTOROLA

Table 8-2. Frequency Coefficients for Tone Generator (continued)

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

HEX

BR5

HEX

BR4

BCD

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

2018

FREQUENCY

267.40

264.40

261.37

258.30

255.20

252.06

248.88

245.66

242.39

239.08

235.73

232.33

228.88

225.37

221.81

218.20

BCD

2019

2020

2021

2022

2023

2024

2025

2026

2027

2028

2029

2030

2031

2032

2033

FREQUENCY

214.52

210.78

206.98

203.10

199.15

195.12

191.00

186.79

182.49

178.09

173.57

168.93

164.17

159.26

154.20

BCD

2034

2035

2036

2037

2038

2039

2040

2041

2042

2043

2044

2045

2046

2047

2048

FREQUENCY

148.96

143.54

137.90

132.02

125.87

119.41

112.58

105.30

97.49

7

D3

D4

D5

D6

D7

D8

D9

DA

DB

DC

DD

DE

DF

E0

E1

E2

7

E3

E4

E5

E6

E7

E8

E9

EA

EB

EC

ED

EE

EF

F0

F1

7

8

F2

F3

F4

F5

F6

F7

F8

F9

FA

FB

FC

FD

FE

FF

00

88.99

79.59

68.92

56.27

39.79

0.00

MOTOROLA

MC145540

8-33

Table 8-3. Attenuation Coefficients for Tone Generator

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

FF

FE

FD

FC

FB

FA

F9

F8

F7

F6

F5

F4

F3

F2

F1

F0

EF

EE

ED

EC

EB

EA

E9

E8

E7

E6

E5

E4

E3

E2

E1

E0

DF

DE

DD

DC

DB

DA

D9

D8

D7

D6

D5

D4

D3

D2

RMS

BR4

D1

D0

CF

CE

CD

CC

CB

CA

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

BF

BE

BD

BC

BB

BA

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

AF

AE

AD

AC

AB

AA

A9

A8

A7

A6

A5

A4

RMS

BR4

A3

A2

A1

A0

9F

9E

9D

9C

9B

9A

99

98

97

96

95

94

93

92

91

90

8F

8E

8D

8C

8B

8A

89

88

87

86

85

84

83

82

81

80

7F

7E

7D

7C

7B

7A

79

78

77

76

RMS

BCD

2047

2046

2045

2044

2043

2042

2041

2040

2039

2038

2037

2036

2035

2034

2033

2032

2031

2030

2029

2028

2027

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

BCD

2001

2000

1999

1998

1997

1996

1995

1994

1993

1992

1991

1990

1989

1988

1987

1986

1985

1984

1983

1982

1981

1980

1979

1978

1977

1976

1975

1974

1973

1972

1971

1970

1969

1968

1967

1966

1965

1964

1963

1962

1961

1960

1959

1958

1957

1956

BCD

1955

1954

1953

1952

1951

1950

1949

1948

1947

1946

1945

1944

1943

1942

1941

1940

1939

1938

1937

1936

1935

1934

1933

1932

1931

1930

1929

1928

1927

1926

1925

1924

1923

1922

1921

1920

1919

1918

1917

1916

1915

1914

1913

1912

1911

1910

7

1.1204

1.1198

1.1193

1.1187

1.1182

1.1176

1.1171

1.1165

1.1160

1.1154

1.1149

1.1143

1.1138

1.1132

1.1127

1.1121

1.1116

1.1110

1.1105

1.1100

1.1094

1.1089

1.1083

1.1078

1.1072

1.1067

1.1061

1.1056

1.1050

1.1045

1.1039

1.1034

1.1028

1.1023

1.1017

1.1012

1.1006

1.1001

1.0996

1.0990

1.0985

1.0979

1.0974

1.0968

1.0963

1.0957

3.21

3.20

3.19

3.18

3.17

3.16

3.15

3.14

3.13

3.12

3.11

3.10

3.09

3.08

3.07

3.06

3.05

3.04

3.03

3.02

3.01

7

1.0952

1.0946

1.0941

1.0935

1.0930

1.0924

1.0919

1.0913

1.0908

1.0903

1.0897

1.0892

1.0886

1.0881

1.0875

1.0870

1.0864

1.0859

1.0853

1.0848

1.0842

1.0837

1.0831

1.0826

1.0820

1.0815

1.0809

1.0804

1.0799

1.0793

1.0788

1.0782

1.0777

1.0771

1.0766

1.0760

1.0755

1.0749

1.0744

1.0738

1.0733

1.0727

1.0722

1.0716

1.0711

1.0705

3.01

3.00

2.99

2.98

2.97

2.96

2.95

2.94

2.93

2.92

2.91

2.90

2.89

2.88

2.87

2.86

2.85

2.84

2.83

2.82

2.81

7

1.0700

1.0695

1.0689

1.0684

1.0678

1.0673

1.0667

1.0662

1.0656

1.0651

1.0645

1.0640

1.0634

1.0629

1.0623

1.0618

1.0612

1.0607

1.0601

1.0596

1.0591

1.0585

1.0580

1.0574

1.0569

1.0563

1.0558

1.0552

1.0547

1.0541

1.0536

1.0530

1.0525

1.0519

1.0514

1.0508

1.0503

1.0497

1.0492

1.0487

1.0481

1.0476

1.0470

1.0465

1.0459

1.0454

2.81

2.80

2.79

2.78

2.77

2.76

2.75

2.74

2.73

2.72

2.71

2.70

2.69

2.68

2.67

2.66

2.65

2.64

2.63

2.62

2.61

2.60

8-34

MC145540

MOTOROLA

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

75

74

73

72

71

70

6F

6E

6D

6C

6B

6A

69

68

67

66

65

64

63

62

61

60

5F

5E

5D

5C

5B

5A

59

58

57

56

55

54

53

52

51

50

4F

4E

4D

4C

4B

4A

49

48

RMS

BR4

47

46

45

44

43

42

41

40

3F

3E

3D

3C

3B

3A

39

38

37

36

35

34

33

32

31

30

2F

2E

2D

2C

2B

2A

29

28

27

26

25

24

23

22

21

20

1F

1E

1D

1C

1B

1A

RMS

BR4

19

18

17

16

15

14

13

12

11

RMS

BCD

1909

1908

1907

1906

1905

1904

1903

1902

1901

1900

1899

1898

1897

1896

1895

1894

1893

1892

1891

1890

1889

1888

1887

1886

1885

1884

1883

1882

1881

1880

1879

1878

1877

1876

1875

1874

1873

1872

1871

1870

1869

1868

1867

1866

1865

1864

BCD

1863

1862

1861

1860

1859

1858

1857

1856

1855

1854

1853

1852

1851

1850

1849

1848

1847

1846

1845

1844

1843

1842

1841

1840

1839

1838

1837

1836

1835

1834

1833

1832

1831

1830

1829

1828

1827

1826

1825

1824

1823

1822

1821

1820

1819

1818

BCD

1817

1816

1815

1814

1813

1812

1811

1810

1809

1808

1807

1806

1805

1804

1803

1802

1801

1800

1799

1798

1797

1796

1795

1794

1793

1792

1791

1790

1789

1788

1787

1786

1785

1784

1783

1782

1781

1780

1779

1778

1777

1776

1775

1774

1773

1772

7

1.0448

1.0443

1.0437

1.0432

1.0426

1.0421

1.0415

1.0410

1.0404

1.0399

1.0394

1.0388

1.0383

1.0377

1.0372

1.0366

1.0361

1.0355

1.0350

1.0344

1.0339

1.0333

1.0328

1.0322

1.0317

1.0311

1.0306

1.0300

1.0295

1.0290

1.0284

1.0279

1.0273

1.0268

1.0262

1.0257

1.0251

1.0246

1.0240

1.0235

1.0229

1.0224

1.0218

1.0213

1.0207

1.0202

2.60

2.59

2.58

2.57

2.56

2.55

2.54

2.53

2.52

2.51

2.50

2.49

2.48

2.47

2.46

2.45

2.44

2.43

2.42

2.41

2.40

2.39

7

1.0196

1.0191

1.0186

1.0180

1.0175

1.0169

1.0164

1.0158

1.0153

1.0147

1.0142

1.0136

1.0131

1.0125

1.0120

1.0114

1.0109

1.0103

1.0098

1.0092

1.0087

1.0082

1.0076

1.0071

1.0065

1.0060

1.0054

1.0049

1.0043

1.0038

1.0032

1.0027

1.0021

1.0016

1.0010

1.0005

0.9999

0.9994

0.9988

0.9983

0.9978

0.9972

0.9967

0.9961

0.9956

0.9950

2.39

2.38

2.37

2.36

2.35

2.34

2.33

2.32

2.31

2.30

2.29

2.28

2.27

2.26

2.25

2.24

2.23

2.22

2.21

2.20

2.19

2.18

7

6

0.9945

0.9939

0.9934

0.9928

0.9923

0.9917

0.9912

0.9906

0.9901

0.9895

0.9890

0.9884

0.9879

0.9874

0.9868

0.9863

0.9857

0.9852

0.9846

0.9841

0.9835

0.9830

0.9824

0.9819

0.9813

0.9808

0.9802

0.9797

0.9791

0.9786

0.9781

0.9775

0.9770

0.9764

0.9759

0.9753

0.9748

0.9742

0.9737

0.9731

0.9726

0.9720

0.9715

0.9709

0.9704

0.9698

2.17

2.16

2.15

2.14

2.13

2.12

2.11

2.10

2.09

2.08

2.07

2.06

2.05

2.04

2.03

2.02

2.01

2.00

1.99

1.98

1.97

1.96

1.95

10

0F

0E

0D

0C

0B

0A

09

08

07

06

05

04

03

02

01

00

FF

FE

FD

FC

FB

FA

F9

F8

F7

F6

F5

F4

F3

F2

F1

F0

EF

EE

ED

EC

MOTOROLA

MC145540

8-35

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

EB

EA

E9

E8

E7

E6

E5

E4

E3

E2

E1

E0

DF

DE

DD

DC

DB

DA

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

CF

CE

CD

CC

CB

CA

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

BF

BE

RMS

BR4

BD

BC

BB

BA

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

AF

AE

AD

AC

AB

AA

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

9F

9E

9D

9C

9B

9A

99

RMS

BR4

8F

8E

8D

8C

8B

8A

89

88

87

86

85

84

83

82

81

80

7F

7E

7D

7C

7B

7A

79

78

77

76

75

74

73

72

71

70

6F

6E

6D

6C

6B

6A

69

68

67

66

65

64

63

62

RMS

BCD

1771

1770

1769

1768

1767

1766

1765

1764

1763

1762

1761

1760

1759

1758

1757

1756

1755

1754

1753

1752

1751

1750

1749

1748

1747

1746

1745

1744

1743

1742

1741

1740

1739

1738

1737

1736

1735

1734

1733

1732

1731

1730

1729

1728

1727

1726

BCD

1725

1724

1723

1722

1721

1720

1719

1718

1717

1716

1715

1714

1713

1712

1711

1710

1709

1708

1707

1706

1705

1704

1703

1702

1701

1700

1699

1698

1697

1696

1695

1694

1693

1692

1691

1690

1689

1688

1687

1686

1685

1684

1683

1682

1681

1680

BCD

1679

1678

1677

1676

1675

1674

1673

1672

1671

1670

1669

1668

1667

1666

1665

1664

1663

1662

1661

1660

1659

1658

1657

1656

1655

1654

1653

1652

1651

1650

1649

1648

1647

1646

1645

1644

1643

1642

1641

1640

1639

1638

1637

1636

1635

1634

6

0.9693

0.9687

0.9682

0.9677

0.9671

0.9666

0.9660

0.9655

0.9649

0.9644

0.9638

0.9633

0.9627

0.9622

0.9616

0.9611

0.9605

0.9600

0.9594

0.9589

0.9583

0.9578

0.9573

0.9567

0.9562

0.9556

0.9551

0.9545

0.9540

0.9534

0.9529

0.9523

0.9518

0.9512

0.9507

0.9501

0.9496

0.9490

0.9485

0.9479

0.9474

0.9469

0.9463

0.9458

0.9452

0.9447

1.95

1.94

1.93

1.92

1.91

1.90

1.89

1.88

1.87

1.86

1.85

1.84

1.83

1.82

1.81

1.80

1.79

1.78

1.77

1.76

1.75

1.74

1.73

1.72

6

0.9441

0.9436

0.9430

0.9425

0.9419

0.9414

0.9408

0.9403

0.9397

0.9392

0.9386

0.9381

0.9375

0.9370

0.9365

0.9359

0.9354

0.9348

0.9343

0.9337

0.9332

0.9326

0.9321

0.9315

0.9310

0.9304

0.9299

0.9293

0.9288

0.9282

0.9277

0.9272

0.9266

0.9261

0.9255

0.9250

0.9244

0.9239

0.9233

0.9228

0.9222

0.9217

0.9211

0.9206

0.9200

0.9195

1.72

1.71

1.70

1.69

1.68

1.67

1.66

1.65

1.64

1.63

1.62

1.61

1.60

1.59

1.58

1.57

1.56

1.55

1.54

1.53

1.52

1.51

1.50

1.49

6

0.9189

0.9184

0.9178

0.9173

0.9168

0.9162

0.9157

0.9151

0.9146

0.9140

0.9135

0.9129

0.9124

0.9118

0.9113

0.9107

0.9102

0.9096

0.9091

0.9085

0.9080

0.9074

0.9069

0.9064

0.9058

0.9053

0.9047

0.9042

0.9036

0.9031

0.9025

0.9020

0.9014

0.9009

0.9003

0.8998

0.8992

0.8987

0.8981

0.8976

0.8970

0.8965

0.8960

0.8954

0.8949

0.8943

1.48

1.47

1.46

1.45

1.44

1.43

1.42

1.41

1.40

1.39

1.38

1.37

1.36

1.35

1.34

1.33

1.32

1.31

1.30

1.29

1.28

1.27

1.26

1.25

98

97

96

95

94

93

92

91

90

8-36

MC145540

MOTOROLA

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

61

60

5F

5E

5D

5C

5B

5A

59

58

57

56

55

54

53

52

51

50

4F

4E

4D

4C

4B

4A

49

48

47

46

45

44

43

42

41

40

3F

3E

3D

3C

3B

3A

39

38

37

36

35

34

RMS

BR4

33

32

31

30

2F

2E

2D

2C

2B

2A

29

28

27

26

25

24

23

22

21

20

1F

1E

1D

1C

1B

1A

19

18

17

16

15

14

13

12

11

RMS

BR4

RMS

BCD

1633

1632

1631

1630

1629

1628

1627

1626

1625

1624

1623

1622

1621

1620

1619

1618

1617

1616

1615

1614

1613

1612

1611

1610

1609

1608

1607

1606

1605

1604

1603

1602

1601

1600

1599

1598

1597

1596

1595

1594

1593

1592

1591

1590

1589

1588

BCD

1587

1586

1585

1584

1583

1582

1581

1580

1579

1578

1577

1576

1575

1574

1573

1572

1571

1570

1569

1568

1567

1566

1565

1564

1563

1562

1561

1560

1559

1558

1557

1556

1555

1554

1553

1552

1551

1550

1549

1548

1547

1546

1545

1544

1543

1542

BCD

1541

1540

1539

1538

1537

1536

1535

1534

1533

1532

1531

1530

1529

1528

1527

1526

1525

1524

1523

1522

1521

1520

1519

1518

1517

1516

1515

1514

1513

1512

1511

1510

1509

1508

1507

1506

1505

1504

1503

1502

1501

1500

1499

1498

1497

1496

6

0.8938

0.8932

0.8927

0.8921

0.8916

0.8910

0.8905

0.8899

0.8894

0.8888

0.8883

0.8877

0.8872

0.8866

0.8861

0.8856

0.8850

0.8845

0.8839

0.8834

0.8828

0.8823

0.8817

0.8812

0.8806

0.8801

0.8795

0.8790

0.8784

0.8779

0.8773

0.8768

0.8763

0.8757

0.8752

0.8746

0.8741

0.8735

0.8730

0.8724

0.8719

0.8713

0.8708

0.8702

0.8697

0.8691

1.24

1.23

1.22

1.21

1.20

1.19

1.18

1.17

1.16

1.15

1.14

1.13

1.12

1.11

1.10

1.09

1.08

1.07

1.06

1.05

1.04

1.03

1.02

1.01

1.00

6

0.8686

0.8680

0.8675

0.8669

0.8664

0.8659

0.8653

0.8648

0.8642

0.8637

0.8631

0.8626

0.8620

0.8615

0.8609

0.8604

0.8598

0.8593

0.8587

0.8582

0.8576

0.8571

0.8565

0.8560

0.8555

0.8549

0.8544

0.8538

0.8533

0.8527

0.8522

0.8516

0.8511

0.8505

0.8500

0.8494

0.8489

0.8483

0.8478

0.8472

0.8467

0.8461

0.8456

0.8451

0.8445

0.8440

0.99

0.98

0.97

0.96

0.95

0.94

0.93

0.92

0.91

0.90

0.89

0.88

0.87

0.86

0.85

0.84

0.83

0.82

0.81

0.80

0.79

0.78

0.77

0.76

0.75

0.74

6

5

05

0.8434

0.8429

0.8423

0.8418

0.8412

0.8407

0.8401

0.8396

0.8390

0.8385

0.8379

0.8374

0.8368

0.8363

0.8357

0.8352

0.8347

0.8341

0.8336

0.8330

0.8325

0.8319

0.8314

0.8308

0.8303

0.8297

0.8292

0.8286

0.8281

0.8275

0.8270

0.8264

0.8259

0.8254

0.8248

0.8243

0.8237

0.8232

0.8226

0.8221

0.8215

0.8210

0.8204

0.8199

0.8193

0.8188

0.74

0.73

0.72

0.71

0.70

0.69

0.68

0.67

0.66

0.65

0.64

0.63

0.62

0.61

0.60

0.59

0.58

0.57

0.56

0.55

0.54

0.53

0.52

0.51

0.50

0.49

0.48

04

03

02

01

00

FF

FE

FD

FC

FB

FA

F9

F8

F7

F6

F5

F4

F3

F2

F1

F0

EF

EE

ED

EC

EB

EA

E9

E8

E7

E6

E5

E4

E3

E2

E1

E0

DF

DE

DD

DC

DB

DA

D9

D8

10

0F

0E

0D

0C

0B

0A

09

08

07

06

MOTOROLA

MC145540

8-37

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

D7

D6

D5

D4

D3

D2

D1

D0

CF

CE

CD

CC

CB

CA

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

BF

BE

BD

BC

BB

BA

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

AF

AE

AD

AC

AB

AA

RMS

BR4

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

9F

9E

9D

9C

9B

9A

99

98

97

96

95

94

93

92

91

90

8F

8E

8D

8C

8B

8A

89

88

87

86

85

84

83

82

81

80

7F

7E

7D

7C

RMS

BR4

7B

7A

79

78

77

76

75

74

73

72

71

70

6F

6E

6D

6C

6B

6A

69

68

67

66

65

64

63

62

61

60

5F

5E

5D

5C

5B

5A

59

58

57

56

55

54

53

52

51

50

4F

4E

RMS

BCD

1495

1494

1493

1492

1491

1490

1489

1488

1487

1486

1485

1484

1483

1482

1481

1480

1479

1478

1477

1476

1475

1474

1473

1472

1471

1470

1469

1468

1467

1466

1465

1464

1463

1462

1461

1460

1459

1458

1457

1456

1455

1454

1453

1452

1451

1450

BCD

1449

1448

1447

1446

1445

1444

1443

1442

1441

1440

1439

1438

1437

1436

1435

1434

1433

1432

1431

1430

1429

1428

1427

1426

1425

1424

1423

1422

1421

1420

1419

1418

1417

1416

1415

1414

1413

1412

1411

1410

1409

1408

1407

1406

1405

1404

BCD

1403

1402

1401

1400

1399

1398

1397

1396

1395

1394

1393

1392

1391

1390

1389

1388

1387

1386

1385

1384

1383

1382

1381

1380

1379

1378

1377

1376

1375

1374

1373

1372

1371

1370

1369

1368

1367

1366

1365

1364

1363

1362

1361

1360

1359

1358

5

0.8182

0.8177

0.8171

0.8166

0.8160

0.8155

0.8150

0.8144

0.8139

0.8133

0.8128

0.8122

0.8117

0.8111

0.8106

0.8100

0.8095

0.8089

0.8084

0.8078

0.8073

0.8067

0.8062

0.8056

0.8051

0.8046

0.8040

0.8035

0.8029

0.8024

0.8018

0.8013

0.8007

0.8002

0.7996

0.7991

0.7985

0.7980

0.7974

0.7969

0.7963

0.7958

0.7952

0.7947

0.7942

0.7936

0.48

0.47

0.46

0.45

0.44

0.43

0.42

0.41

0.40

0.39

0.38

0.37

0.36

0.35

0.34

0.33

0.32

0.31

0.30

0.29

0.28

0.27

0.26

0.25

0.24

0.23

0.22

0.21

5

0.7931

0.7925

0.7920

0.7914

0.7909

0.7903

0.7898

0.7892

0.7887

0.7881

0.7876

0.7870

0.7865

0.7859

0.7854

0.7848

0.7843

0.7838

0.7832

0.7827

0.7821

0.7816

0.7810

0.7805

0.7799

0.7794

0.7788

0.7783

0.7777

0.7772

0.7766

0.7761

0.7755

0.7750

0.7744

0.7739

0.7734

0.7728

0.7723

0.7717

0.7712

0.7706

0.7701

0.7695

0.7690

0.7684

0.20

0.19

0.18

0.17

0.16

0.15

0.14

0.13

0.12

0.11

5

0.7679

0.7673

0.7668

0.7662

0.7657

0.7651

0.7646

0.7641

0.7635

0.7630

0.7624

0.7619

0.7613

0.7608

0.7602

0.7597

0.7591

0.7586

0.7580

0.7575

0.7569

0.7564

0.7558

0.7553

0.7547

0.7542

0.7537

0.7531

0.7526

0.7520

0.7515

0.7509

0.7504

0.7498

0.7493

0.7487

0.7482

0.7476

0.7471

0.7465

0.7460

0.7454

0.7449

0.7443

0.7438

0.7433

–0.08

–0.09

–0.10

–0.11

–0.12

–0.13

–0.14

–0.15

–0.16

–0.17

–0.18

–0.19

–0.20

–0.21

–0.22

–0.23

–0.24

–0.25

–0.26

–0.27

–0.28

–0.29

–0.30

–0.31

–0.32

–0.33

–0.34

–0.35

–0.36

0.11

0.10

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

0.00

–0.01

–0.02

–0.03

–0.04

–0.05

–0.06

–0.07

8-38

MC145540

MOTOROLA

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

4D

4C

4B

4A

49

48

47

46

45

44

43

42

41

40

3F

3E

3D

3C

3B

3A

39

38

37

36

35

34

33

32

31

30

2F

2E

2D

2C

2B

2A

29

28

27

26

25

24

23

22

21

20

RMS

BR4

1F

1E

1D

1C

1B

1A

19

18

17

16

15

14

13

12

11

RMS

BR4

RMS

BCD

1357

1356

1355

1354

1353

1352

1351

1350

1349

1348

1347

1346

1345

1344

1343

1342

1341

1340

1339

1338

1337

1336

1335

1334

1333

1332

1331

1330

1329

1328

1327

1326

1325

1324

1323

1322

1321

1320

1319

1318

1317

1316

1315

1314

1313

1312

BCD

1311

1310

1309

1308

1307

1306

1305

1304

1303

1302

1301

1300

1299

1298

1297

1296

1295

1294

1293

1292

1291

1290

1289

1288

1287

1286

1285

1284

1283

1282

1281

1280

1279

1278

1277

1276

1275

1274

1273

1272

1271

1270

1269

1268

1267

1266

BCD

1265

1264

1263

1262

1261

1260

1259

1258

1257

1256

1255

1254

1253

1252

1251

1250

1249

1248

1247

1246

1245

1244

1243

1242

1241

1240

1239

1238

1237

1236

1235

1234

1233

1232

1231

1230

1229

1228

1227

1226

1225

1224

1223

1222

1221

1220

5

0.7427

0.7422

0.7416

0.7411

0.7405

0.7400

0.7394

0.7389

0.7383

0.7378

0.7372

0.7367

0.7361

0.7356

0.7350

0.7345

0.7339

0.7334

0.7329

0.7323

0.7318

0.7312

0.7307

0.7301

0.7296

0.7290

0.7285

0.7279

0.7274

0.7268

0.7263

0.7257

0.7252

0.7246

0.7241

0.7235

0.7230

0.7225

0.7219

0.7214

0.7208

0.7203

0.7197

0.7192

0.7186

0.7181

–0.37

–0.38

–0.39

–0.40

–0.41

–0.42

–0.43

–0.44

–0.45

–0.46

–0.47

–0.48

–0.49

–0.50

–0.51

–0.52

–0.53

–0.54

–0.55

–0.56

–0.57

–0.58

–0.59

–0.60

–0.61

–0.62

–0.63

–0.64

–0.65

–0.66

5

4

0.7175

0.7170

0.7164

0.7159

0.7153

0.7148

0.7142

0.7137

0.7132

0.7126

0.7121

0.7115

0.7110

0.7104

0.7099

0.7093

0.7088

0.7082

0.7077

0.7071

0.7066

0.7060

0.7055

0.7049

0.7044

0.7038

0.7033

0.7028

0.7022

0.7017

0.7011

0.7006

0.7000

0.6995

0.6989

0.6984

0.6978

0.6973

0.6967

0.6962

0.6956

0.6951

0.6945

0.6940

0.6934

0.6929

–0.66

–0.67

–0.68

–0.69

–0.70

–0.71

–0.72

–0.73

–0.74

–0.75

–0.76

–0.77

–0.78

–0.79

–0.80

–0.81

–0.82

–0.83

–0.84

–0.85

–0.86

–0.87

–0.88

–0.89

–0.90

–0.91

–0.92

–0.93

–0.94

–0.95

–0.96

–0.97

4

F1

0.6924

0.6918

0.6913

0.6907

0.6902

0.6896

0.6891

0.6885

0.6880

0.6874

0.6869

0.6863

0.6858

0.6852

0.6847

0.6841

0.6836

0.6830

0.6825

0.6820

0.6814

0.6809

0.6803

0.6798

0.6792

0.6787

0.6781

0.6776

0.6770

0.6765

0.6759

0.6754

0.6748

0.6743

0.6737

0.6732

0.6726

0.6721

0.6716

0.6710

0.6705

0.6699

0.6694

0.6688

0.6683

0.6677

–0.97

–0.98

–0.99

–1.00

–1.01

–1.02

–1.03

–1.04

–1.05

–1.06

–1.07

–1.08

–1.09

–1.10

–1.11

–1.12

–1.13

–1.14

–1.15

–1.16

–1.17

–1.18

–1.19

–1.20

–1.21

–1.22

–1.23

–1.24

–1.25

–1.26

–1.27

–1.28

–1.29

F0

EF

EE

ED

EC

EB

EA

E9

E8

E7

E6

E5

E4

E3

E2

E1

E0

DF

DE

DD

DC

DB

DA

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

CF

CE

CD

CC

CB

CA

C9

C8

C7

C6

C5

C4

10

0F

0E

0D

0C

0B

0A

09

08

07

06

05

04

03

02

01

00

FF

FE

FD

FC

FB

FA

F9

F8

F7

F6

F5

F4

F3

F2

MOTOROLA

MC145540

8-39

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

C3

C2

C1

C0

BF

BE

BD

BC

BB

BA

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

AF

AE

AD

AC

AB

AA

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

9F

9E

9D

9C

9B

9A

99

RMS

BR4

95

94

93

92

91

90

8F

8E

8D

8C

8B

8A

89

88

87

86

85

84

83

82

81

80

7F

7E

7D

7C

7B

7A

79

78

77

76

75

74

73

72

71

70

6F

6E

6D

6C

6B

6A

69

68

RMS

BR4

67

66

65

64

63

62

61

60

5F

5E

5D

5C

5B

5A

59

58

57

56

55

54

53

52

51

50

4F

4E

4D

4C

4B

4A

49

48

47

46

45

44

43

42

41

40

3F

3E

3D

3C

3B

3A

RMS

BCD

1219

1218

1217

1216

1215

1214

1213

1212

1211

1210

1209

1208

1207

1206

1205

1204

1203

1202

1201

1200

1199

1198

1197

1196

1195

1194

1193

1192

1191

1190

1189

1188

1187

1186

1185

1184

1183

1182

1181

1180

1179

1178

1177

1176

1175

1174

BCD

1173

1172

1171

1170

1169

1168

1167

1166

1165

1164

1163

1162

1161

1160

1159

1158

1157

1156

1155

1154

1153

1152

1151

1150

1149

1148

1147

1146

1145

1144

1143

1142

1141

1140

1139

1138

1137

1136

1135

1134

1133

1132

1131

1130

1129

1128

BCD

1127

1126

1125

1124

1123

1122

1121

1120

1119

1118

1117

1116

1115

1114

1113

1112

1111

1110

1109

1108

1107

1106

1105

1104

1103

1102

1101

1100

1099

1098

1097

1096

1095

1094

1093

1092

1091

1090

1089

1088

1087

1086

1085

1084

1083

1082

4

0.6672

0.6666

0.6661

0.6655

0.6650

0.6644

0.6639

0.6633

0.6628

0.6623

0.6617

0.6612

0.6606

0.6601

0.6595

0.6590

0.6584

0.6579

0.6573

0.6568

0.6562

0.6557

0.6551

0.6546

0.6540

0.6535

0.6529

0.6524

0.6519

0.6513

0.6508

0.6502

0.6497

0.6491

0.6486

0.6480

0.6475

0.6469

0.6464

0.6458

0.6453

0.6447

0.6442

0.6436

0.6431

0.6425

–1.30

–1.31

–1.32

–1.33

–1.34

–1.35

–1.36

–1.37

–1.38

–1.39

–1.40

–1.41

–1.42

–1.43

–1.44

–1.45

–1.46

–1.47

–1.48

–1.49

–1.50

–1.51

–1.52

–1.53

–1.54

–1.55

–1.56

–1.57

–1.58

–1.59

–1.60

–1.61

–1.62

4

0.6420

0.6415

0.6409

0.6404

0.6398

0.6393

0.6387

0.6382

0.6376

0.6371

0.6365

0.6360

0.6354

0.6349

0.6343

0.6338

0.6332

0.6327

0.6321

0.6316

0.6311

0.6305

0.6300

0.6294

0.6289

0.6283

0.6278

0.6272

0.6267

0.6261

0.6256

0.6250

0.6245

0.6239

0.6234

0.6228

0.6223

0.6217

0.6212

0.6207

0.6201

0.6196

0.6190

0.6185

0.6179

0.6174

–1.63

–1.64

–1.65

–1.66

–1.67

–1.68

–1.69

–1.70

–1.71

–1.72

–1.73

–1.74

–1.75

–1.76

–1.77

–1.78

–1.79

–1.80

–1.81

–1.82

–1.83

–1.84

–1.85

–1.86

–1.87

–1.88

–1.89

–1.90

–1.91

–1.92

–1.93

–1.94

–1.95

–1.96

–1.97

4

0.6168

0.6163

0.6157

0.6152

0.6146

0.6141

0.6135

0.6130

0.6124

0.6119

0.6114

0.6108

0.6103

0.6097

0.6092

0.6086

0.6081

0.6075

0.6070

0.6064

0.6059

0.6053

0.6048

0.6042

0.6037

0.6031

0.6026

0.6020

0.6015

0.6010

0.6004

0.5999

0.5993

0.5988

0.5982

0.5977

0.5971

0.5966

0.5960

0.5955

0.5949

0.5944

0.5938

0.5933

0.5927

0.5922

–1.98

–1.99

–2.00

–2.01

–2.02

–2.03

–2.04

–2.05

–2.06

–2.07

–2.08

–2.09

–2.10

–2.11

–2.12

–2.13

–2.14

–2.15

–2.16

–2.17

–2.18

–2.19

–2.20

–2.21

–2.22

–2.23

–2.24

–2.25

–2.26

–2.27

–2.28

–2.29

–2.30

–2.31

–2.32

–2.33

98

97

96

8-40

MC145540

MOTOROLA

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

39

38

37

36

35

34

33

32

31

30

2F

2E

2D

2C

2B

2A

29

28

27

26

25

24

23

22

21

20

1F

1E

1D

1C

1B

1A

19

18

17

16

15

14

13

12

11

RMS

BR4

0B

0A

09

RMS

BR4

DD

DC

DB

DA

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

CF

CE

CD

CC

CB

CA

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

BF

BE

BD

BC

BB

BA

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

RMS

BCD

1081

1080

1079

1078

1077

1076

1075

1074

1073

1072

1071

1070

1069

1068

1067

1066

1065

1064

1063

1062

1061

1060

1059

1058

1057

1056

1055

1054

1053

1052

1051

1050

1049

1048

1047

1046

1045

1044

1043

1042

1041

1040

1039

1038

1037

1036

BCD

1035

1034

1033

1032

1031

1030

1029

1028

1027

1026

1025

1024

1023

1022

1021

1020

1019

1018

1017

1016

1015

1014

1013

1012

1011

1010

1009

1008

1007

1006

1005

1004

1003

1002

1001

1000

999

BCD

989

988

987

986

985

984

983

982

981

980

979

978

977

976

975

974

973

972

971

970

969

968

967

966

965

964

963

962

961

960

959

958

957

956

955

954

953

952

951

950

949

948

947

946

945

944

4

0.5916

0.5911

0.5906

0.5900

0.5895

0.5889

0.5884

0.5878

0.5873

0.5867

0.5862

0.5856

0.5851

0.5845

0.5840

0.5834

0.5829

0.5823

0.5818

0.5812

0.5807

0.5802

0.5796

0.5791

0.5785

0.5780

0.5774

0.5769

0.5763

0.5758

0.5752

0.5747

0.5741

0.5736

0.5730

0.5725

0.5719

0.5714

0.5708

0.5703

0.5698

0.5692

0.5687

0.5681

0.5676

0.5670

–2.34

–2.35

–2.36

–2.37

–2.38

–2.39

–2.40

–2.41

–2.42

–2.43

–2.44

–2.45

–2.46

–2.47

–2.48

–2.49

–2.50

–2.51

–2.52

–2.53

–2.54

–2.55

–2.56

–2.57

–2.58

–2.59

–2.60

–2.61

–2.62

–2.63

–2.64

–2.65

–2.66

–2.67

–2.68

–2.69

–2.70

–2.71

4

3

0.5665

0.5659

0.5654

0.5648

0.5643

0.5637

0.5632

0.5626

0.5621

0.5615

0.5610

0.5605

0.5599

0.5594

0.5588

0.5583

0.5577

0.5572

0.5566

0.5561

0.5555

0.5550

0.5544

0.5539

0.5533

0.5528

0.5522

0.5517

0.5511

0.5506

0.5501

0.5495

0.5490

0.5484

0.5479

0.5473

0.5468

0.5462

0.5457

0.5451

0.5446

0.5440

0.5435

0.5429

0.5424

0.5418

–2.72

–2.73

–2.74

–2.75

–2.76

–2.77

–2.78

–2.79

–2.80

–2.81

–2.82

–2.83

–2.84

–2.85

–2.86

–2.87

–2.88

–2.89

–2.90

–2.91

–2.92

–2.93

–2.94

–2.95

–2.96

–2.97

–2.98

–2.99

–3.00

–3.01

–3.02

–3.03

–3.04

–3.05

–3.06

–3.07

–3.08

–3.09

–3.10

3

0.5413

0.5407

0.5402

0.5397

0.5391

0.5386

0.5380

0.5375

0.5369

0.5364

0.5358

0.5353

0.5347

0.5342

0.5336

0.5331

0.5325

0.5320

0.5314

0.5309

0.5303

0.5298

0.5293

0.5287

0.5282

0.5276

0.5271

0.5265

0.5260

0.5254

0.5249

0.5243

0.5238

0.5232

0.5227

0.5221

0.5216

0.5210

0.5205

0.5199

0.5194

0.5189

0.5183

0.5178

0.5172

0.5167

–3.11

–3.12

–3.13

–3.14

–3.15

–3.16

–3.17

–3.18

–3.19

–3.20

–3.21

–3.22

–3.23

–3.24

–3.25

–3.26

–3.27

–3.28

–3.29

–3.30

–3.31

–3.32

–3.33

–3.34

–3.35

–3.36

–3.37

–3.38

–3.39

–3.40

–3.41

–3.42

–3.43

–3.44

–3.45

–3.46

–3.47

–3.48

–3.49

–3.50

–3.51

–3.52

08

07

06

05

04

03

02

01

00

FF

FE

FD

FC

FB

FA

F9

F8

F7

F6

F5

F4

F3

F2

F1

F0

EF

EE

ED

EC

EB

EA

E9

E8

E7

E6

E5

E4

E3

E2

E1

E0

DF

DE

998

997

996

995

10

0F

0E

0D

0C

994

993

992

991

990

MOTOROLA

MC145540

8-41

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

AF

AE

AD

AC

AB

AA

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

9F

9E

9D

9C

9B

9A

99

98

97

96

95

94

93

92

91

90

8F

8E

8D

8C

8B

8A

89

88

87

86

85

84

83

82

RMS

BR4

81

80

7F

7E

7D

7C

7B

7A

79

78

77

76

75

74

73

72

71

70

6F

6E

6D

6C

6B

6A

69

68

67

66

65

64

63

62

61

60

5F

5E

5D

5C

5B

5A

59

58

57

56

55

54

RMS

BR4

53

52

51

50

4F

4E

4D

4C

4B

4A

49

48

47

46

45

44

43

42

41

40

3F

3E

3D

3C

3B

3A

39

38

37

36

35

34

33

32

31

30

2F

2E

2D

2C

2B

2A

29

28

27

26

RMS

BCD

943

942

941

940

939

938

937

936

935

934

933

932

931

930

929

928

927

926

925

924

923

922

921

920

919

918

917

916

915

914

913

912

911

910

909

908

907

906

905

904

903

902

901

900

899

898

BCD

897

896

895

894

893

892

891

890

889

888

887

886

885

884

883

882

881

880

879

878

877

876

875

874

873

872

871

870

869

868

867

866

865

864

863

862

861

860

859

858

857

856

855

854

853

852

BCD

851

850

849

848

847

846

845

844

843

842

841

840

839

838

837

836

835

834

833

832

831

830

829

828

827

826

825

824

823

822

821

820

819

818

817

816

815

814

813

812

811

810

809

808

807

806

3

0.5161

0.5156

0.5150

0.5145

0.5139

0.5134

0.5128

0.5123

0.5117

0.5112

0.5106

0.5101

0.5095

0.5090

0.5085

0.5079

0.5074

0.5068

0.5063

0.5057

0.5052

0.5046

0.5041

0.5035

0.5030

0.5024

0.5019

0.5013

0.5008

0.5002

0.4997

0.4992

0.4986

0.4981

0.4975

0.4970

0.4964

0.4959

0.4953

0.4948

0.4942

0.4937

0.4931

0.4926

0.4920

0.4915

–3.53

–3.54

–3.55

–3.56

–3.57

–3.58

–3.59

–3.60

–3.61

–3.62

–3.63

–3.64

–3.65

–3.66

–3.67

–3.68

–3.69

–3.70

–3.71

–3.72

–3.73

–3.74

–3.75

–3.76

–3.77

–3.78

–3.79

–3.80

–3.81

–3.82

–3.83

–3.84

–3.85

–3.86

–3.87

–3.88

–3.89

–3.90

–3.91

–3.92

–3.93

–3.94

–3.95

3

0.4909

0.4904

0.4898

0.4893

0.4888

0.4882

0.4877

0.4871

0.4866

0.4860

0.4855

0.4849

0.4844

0.4838

0.4833

0.4827

0.4822

0.4816

0.4811

0.4805

0.4800

0.4794

0.4789

0.4784

0.4778

0.4773

0.4767

0.4762

0.4756

0.4751

0.4745

0.4740

0.4734

0.4729

0.4723

0.4718

0.4712

0.4707

0.4701

0.4696

0.4690

0.4685

0.4680

0.4674

0.4669

0.4663

–3.96

–3.97

–3.98

–3.99

–4.00

–4.01

–4.02

–4.03

–4.04

–4.05

–4.06

–4.07

–4.08

–4.09

–4.10

–4.11

–4.12

–4.13

–4.14

–4.15

–4.16

–4.17

–4.18

–4.19

–4.20

–4.21

–4.22

–4.23

–4.24

–4.25

–4.26

–4.27

–4.28

–4.29

–4.30

–4.31

–4.32

–4.33

–4.34

–4.35

–4.36

–4.37

–4.38

–4.39

–4.40

–4.41

3

0.4658

0.4652

0.4647

0.4641

0.4636

0.4630

0.4625

0.4619

0.4614

0.4608

0.4603

0.4597

0.4592

0.4586

0.4581

0.4576

0.4570

0.4565

0.4559

0.4554

0.4548

0.4543

0.4537

0.4532

0.4526

0.4521

0.4515

0.4510

0.4504

0.4499

0.4493

0.4488

0.4483

0.4477

0.4472

0.4466

0.4461

0.4455

0.4450

0.4444

0.4439

0.4433

0.4428

0.4422

0.4417

0.4411

–4.42

–4.43

–4.44

–4.45

–4.46

–4.47

–4.48

–4.49

–4.50

–4.51

–4.52

–4.53

–4.54

–4.55

–4.56

–4.57

–4.58

–4.59

–4.60

–4.61

–4.62

–4.64

–4.65

–4.66

–4.67

–4.68

–4.69

–4.70

–4.71

–4.72

–4.73

–4.74

–4.75

–4.76

–4.77

–4.78

–4.79

–4.80

–4.81

–4.83

–4.84

–4.85

–4.86

–4.87

–4.88

–4.89

8-42

MC145540

MOTOROLA

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

25

24

23

22

21

20

1F

1E

1D

1C

1B

1A

19

18

17

16

15

14

13

12

11

RMS

BR4

RMS

BR4

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

BF

BE

BD

BC

BB

BA

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

AF

AE

AD

AC

AB

AA

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

9F

9E

9D

9C

RMS

BCD

805

804

803

802

801

800

799

798

797

796

795

794

793

792

791

790

789

788

787

786

785

784

783

782

781

780

779

778

777

776

775

774

773

772

771

770

769

768

767

766

765

764

763

762

761

760

BCD

759

758

757

756

755

754

753

752

751

750

749

748

747

746

745

744

743

742

741

740

739

738

737

736

735

734

733

732

731

730

729

728

727

726

725

724

723

722

721

720

719

718

717

716

715

714

BCD

713

712

711

710

709

708

707

706

705

704

703

702

701

700

699

698

697

696

695

694

693

692

691

690

689

688

687

686

685

684

683

682

681

680

679

678

677

676

675

674

673

672

671

670

669

668

3

2

0.4406

0.4400

0.4395

0.4389

0.4384

0.4379

0.4373

0.4368

0.4362

0.4357

0.4351

0.4346

0.4340

0.4335

0.4329

0.4324

0.4318

0.4313

0.4307

0.4302

0.4296

0.4291

0.4285

0.4280

0.4275

0.4269

0.4264

0.4258

0.4253

0.4247

0.4242

0.4236

0.4231

0.4225

0.4220

0.4214

0.4209

0.4203

0.4198

0.4192

0.4187

0.4181

0.4176

0.4171

0.4165

0.4160

–4.90

–4.91

–4.92

–4.93

–4.94

–4.95

–4.97

–4.98

–4.99

–5.00

–5.01

–5.02

–5.03

–5.04

–5.05

–5.06

–5.08

–5.09

–5.10

–5.11

–5.12

–5.13

–5.14

–5.15

–5.16

–5.17

–5.19

–5.20

–5.21

–5.22

–5.23

–5.24

–5.25

–5.26

–5.28

–5.29

–5.30

–5.31

–5.32

–5.33

–5.34

–5.35

–5.37

–5.38

–5.39

–5.40

2

F7

0.4154

0.4149

0.4143

0.4138

0.4132

0.4127

0.4121

0.4116

0.4110

0.4105

0.4099

0.4094

0.4088

0.4083

0.4077

0.4072

0.4067

0.4061

0.4056

0.4050

0.4045

0.4039

0.4034

0.4028

0.4023

0.4017

0.4012

0.4006

0.4001

0.3995

0.3990

0.3984

0.3979

0.3974

0.3968

0.3963

0.3957

0.3952

0.3946

0.3941

0.3935

0.3930

0.3924

0.3919

0.3913

0.3908

–5.41

–5.42

–5.43

–5.45

–5.46

–5.47

–5.48

–5.49

–5.50

–5.52

–5.53

–5.54

–5.55

–5.56

–5.57

–5.59

–5.60

–5.61

–5.62

–5.63

–5.64

–5.66

–5.67

–5.68

–5.69

–5.70

–5.71

–5.73

–5.74

–5.75

–5.76

–5.77

–5.79

–5.80

–5.81

–5.82

–5.83

–5.85

–5.86

–5.87

–5.88

–5.89

–5.91

–5.92

–5.93

–5.94

2

0.3902

0.3897

0.3891

0.3886

0.3880

0.3875

0.3870

0.3864

0.3859

0.3853

0.3848

0.3842

0.3837

0.3831

0.3826

0.3820

0.3815

0.3809

0.3804

0.3798

0.3793

0.3787

0.3782

0.3776

0.3771

0.3766

0.3760

0.3755

0.3749

0.3744

0.3738

0.3733

0.3727

0.3722

0.3716

0.3711

0.3705

0.3700

0.3694

0.3689

0.3683

0.3678

0.3672

0.3667

0.3662

0.3656

–5.95

–5.97

–5.98

–5.99

–6.00

–6.02

–6.03

–6.04

–6.05

–6.07

–6.08

–6.09

–6.10

–6.11

–6.13

–6.14

–6.15

–6.16

–6.18

–6.19

–6.20

–6.21

–6.23

–6.24

–6.25

–6.27

–6.28

–6.29

–6.30

–6.32

–6.33

–6.34

–6.35

–6.37

–6.38

–6.39

–6.41

–6.42

–6.43

–6.44

–6.46

–6.47

–6.48

–6.50

–6.51

–6.52

F6

F5

F4

F3

F2

F1

F0

EF

EE

ED

EC

EB

EA

E9

E8

E7

E6

E5

E4

E3

E2

E1

E0

DF

DE

DD

DC

DB

DA

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

CF

CE

CD

CC

CB

CA

10

0F

0E

0D

0C

0B

0A

09

08

07

06

05

04

03

02

01

00

FF

FE

FD

FC

FB

FA

F9

F8

MOTOROLA

MC145540

8-43

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

BR4

9B

9A

99

98

97

96

95

94

93

92

91

90

8F

8E

8D

8C

8B

8A

89

88

87

86

85

84

83

82

81

80

7F

7E

7D

7C

7B

7A

79

78

77

76

75

74

73

72

71

70

6F

6E

RMS

BR4

6D

6C

6B

6A

69

68

67

66

65

64

63

62

61

60

5F

5E

5D

5C

5B

5A

59

58

57

56

55

54

53

52

51

50

4F

4E

4D

4C

4B

4A

49

48

47

46

45

44

43

42

41

40

RMS

BR4

3F

3E

3D

3C

3B

3A

39

38

37

36

35

34

33

32

31

30

2F

2E

2D

2C

2B

2A

29

28

27

26

25

24

23

22

21

20

1F

1E

1D

1C

1B

1A

19

18

17

16

15

14

13

12

RMS

BCD

667

666

665

664

663

662

661

660

659

658

657

656

655

654

653

652

651

650

649

648

647

646

645

644

643

642

641

640

639

638

637

636

635

634

633

632

631

630

629

628

627

626

625

624

623

622

BCD

621

620

619

618

617

616

615

614

613

612

611

610

609

608

607

606

605

604

603

602

601

600

599

598

597

596

595

594

593

592

591

590

589

588

587

586

585

584

583

582

581

580

579

578

577

576

BCD

575

574

573

572

571

570

569

568

567

566

565

564

563

562

561

560

559

558

557

556

555

554

553

552

551

550

549

548

547

546

545

544

543

542

541

540

539

538

537

536

535

534

533

532

531

530

2

0.3651

0.3645

0.3640

0.3634

0.3629

0.3623

0.3618

0.3612

0.3607

0.3601

0.3596

0.3590

0.3585

0.3579

0.3574

0.3568

0.3563

0.3558

0.3552

0.3547

0.3541

0.3536

0.3530

0.3525

0.3519

0.3514

0.3508

0.3503

0.3497

0.3492

0.3486

0.3481

0.3475

0.3470

0.3465

0.3459

0.3454

0.3448

0.3443

0.3437

0.3432

0.3426

0.3421

0.3415

0.3410

0.3404

–6.53

–6.55

–6.56

–6.57

–6.59

–6.60

–6.61

–6.63

–6.64

–6.65

–6.67

–6.68

–6.69

–6.71

–6.72

–6.73

–6.75

–6.76

–6.77

–6.79

–6.80

–6.81

–6.83

–6.84

–6.85

–6.87

–6.88

–6.89

–6.91

–6.92

–6.93

–6.95

–6.96

–6.97

–6.99

–7.00

–7.02

–7.03

–7.04

–7.06

–7.07

–7.09

–7.10

–7.11

–7.13

–7.14

2

0.3399

0.3393

0.3388

0.3382

0.3377

0.3371

0.3366

0.3361

0.3355

0.3350

0.3344

0.3339

0.3333

0.3328

0.3322

0.3317

0.3311

0.3306

0.3300

0.3295

0.3289

0.3284

0.3278

0.3273

0.3267

0.3262

0.3257

0.3251

0.3246

0.3240

0.3235

0.3229

0.3224

0.3218

0.3213

0.3207

0.3202

0.3196

0.3191

0.3185

0.3180

0.3174

0.3169

0.3163

0.3158

0.3153

–7.15

–7.17

–7.18

–7.20

–7.21

–7.23

–7.24

–7.25

–7.27

–7.28

–7.30

–7.31

–7.32

–7.34

–7.35

–7.37

–7.38

–7.40

–7.41

–7.42

–7.44

–7.45

–7.47

–7.48

–7.50

–7.51

–7.53

–7.54

–7.56

–7.57

–7.59

–7.60

–7.61

–7.63

–7.64

–7.66

–7.67

–7.69

–7.70

–7.72

–7.73

–7.75

–7.76

–7.78

–7.79

–7.81

2

0.3147

0.3142

0.3136

0.3131

0.3125

0.3120

0.3114

0.3109

0.3103

0.3098

0.3092

0.3087

0.3081

0.3076

0.3070

0.3065

0.3059

0.3054

0.3049

0.3043

0.3038

0.3032

0.3027

0.3021

0.3016

0.3010

0.3005

0.2999

0.2994

0.2988

0.2983

0.2977

0.2972

0.2966

0.2961

0.2955

0.2950

0.2945

0.2939

0.2934

0.2928

0.2923

0.2917

0.2912

0.2906

0.2901

–7.82

–7.84

–7.85

–7.87

–7.88

–7.90

–7.91

–7.93

–7.95

–7.96

–7.98

–7.99

–8.01

–8.02

–8.04

–8.05

–8.07

–8.08

–8.10

–8.12

–8.13

–8.15

–8.16

–8.18

–8.19

–8.21

–8.23

–8.24

–8.26

–8.27

–8.29

–8.30

–8.32

–8.34

–8.35

–8.37

–8.38

–8.40

–8.42

–8.43

–8.45

–8.47

–8.48

–8.50

–8.51

–8.53

8-44

MC145540

MOTOROLA

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

BR4

RMS

BR4

E3

E2

E1

E0

DF

DE

DD

DC

DB

DA

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

CF

CE

CD

CC

CB

CA

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

BF

BE

BD

BC

BB

BA

B9

B8

B7

B6

RMS

BR4

B5

B4

B3

B2

B1

B0

AF

AE

AD

AC

AB

AA

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

9F

9E

9D

9C

9B

9A

99

BCD

529

528

527

526

525

524

523

522

521

520

519

518

517

516

515

514

513

512

511

510

509

508

507

506

505

504

503

502

501

500

499

498

497

496

495

494

493

492

491

490

489

488

487

486

485

484

BCD

483

482

481

480

479

478

477

476

475

474

473

472

471

470

469

468

467

466

465

464

463

462

461

460

459

458

457

456

455

454

453

452

451

450

449

448

447

446

445

444

443

442

441

440

439

438

BCD

437

436

435

434

433

432

431

430

429

428

427

426

425

424

423

422

421

420

419

418

417

416

415

414

413

412

411

410

409

408

407

406

405

404

403

402

401

400

399

398

397

396

395

394

393

392

2

1

11

0.2895

0.2890

0.2884

0.2879

0.2873

0.2868

0.2862

0.2857

0.2852

0.2846

0.2841

0.2835

0.2830

0.2824

0.2819

0.2813

0.2808

0.2802

0.2797

0.2791

0.2786

0.2780

0.2775

0.2769

0.2764

0.2758

0.2753

0.2748

0.2742

0.2737

0.2731

0.2726

0.2720

0.2715

0.2709

0.2704

0.2698

0.2693

0.2687

0.2682

0.2676

0.2671

0.2665

0.2660

0.2654

0.2649

–8.55

–8.56

–8.58

–8.60

–8.61

–8.63

–8.65

–8.66

–8.68

–8.70

–8.71

–8.73

–8.75

–8.76

–8.78

–8.80

–8.81

–8.83

–8.85

–8.87

–8.88

–8.90

–8.92

–8.93

–8.95

–8.97

–8.99

–9.00

–9.02

–9.04

–9.05

–9.07

–9.09

–9.11

–9.12

–9.14

–9.16

–9.18

–9.20

–9.21

–9.23

–9.25

–9.27

–9.28

–9.30

–9.32

1

0.2644

0.2638

0.2633

0.2627

0.2622

0.2616

0.2611

0.2605

0.2600

0.2594

0.2589

0.2583

0.2578

0.2572

0.2567

0.2561

0.2556

0.2550

0.2545

0.2540

0.2534

0.2529

0.2523

0.2518

0.2512

0.2507

0.2501

0.2496

0.2490

0.2485

0.2479

0.2474

0.2468

0.2463

0.2457

0.2452

–9.34

–9.36

–9.37

–9.39

–9.41

–9.43

–9.45

–9.46

–9.48

–9.50

–9.52

–9.54

–9.56

–9.57

–9.59

–9.61

–9.63

–9.65

–9.67

–9.69

–9.71

–9.72

–9.74

–9.76

–9.78

–9.80

–9.82

–9.84

–9.86

–9.88

–9.89

–9.91

–9.93

–9.95

–9.97

–9.99

1

0.2392 –10.21

0.2386 –10.23

0.2381 –10.25

0.2375 –10.27

0.2370 –10.29

0.2364 –10.31

0.2359 –10.33

0.2353 –10.35

0.2348 –10.37

0.2343 –10.39

0.2337 –10.41

0.2332 –10.43

0.2326 –10.45

0.2321 –10.47

0.2315 –10.49

0.2310 –10.51

0.2304 –10.53

0.2299 –10.55

0.2293 –10.57

0.2288 –10.59

0.2282 –10.61

0.2277 –10.63

0.2271 –10.66

0.2266 –10.68

0.2260 –10.70

0.2255 –10.72

0.2249 –10.74

0.2244 –10.76

0.2239 –10.78

0.2233 –10.80

0.2228 –10.82

0.2222 –10.85

0.2217 –10.87

0.2211 –10.89

0.2206 –10.91

0.2200 –10.93

0.2195 –10.95

0.2189 –10.98

0.2184 –11.00

0.2178 –11.02

0.2173 –11.04

0.2167 –11.06

0.2162 –11.08

0.2156 –11.11

0.2151 –11.13

0.2145 –11.15

10

0F

0E

0D

0C

0B

0A

09

08

07

06

05

04

03

02

01

00

FF

FE

FD

FC

FB

FA

F9

F8

F7

F6

F5

F4

F3

F2

F1

F0

EF

EE

ED

EC

EB

EA

E9

E8

E7

E6

E5

E4

98

97

96

95

94

93

92

0.2446 –10.01

0.2441 –10.03

0.2436 –10.05

0.2430 –10.07

0.2425 –10.09

0.2419 –10.11

0.2414 –10.13

0.2408 –10.15

0.2403 –10.17

0.2397 –10.19

91

90

8F

8E

8D

8C

8B

8A

89

88

MOTOROLA

MC145540

8-45

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

BR4

87

86

85

84

83

82

81

80

7F

7E

7D

7C

7B

7A

79

78

77

76

75

74

73

72

71

70

6F

6E

6D

6C

6B

6A

69

68

67

66

65

64

63

62

61

60

5F

5E

5D

5C

5B

5A

BR4

59

58

57

56

55

54

53

52

51

50

4F

4E

4D

4C

4B

4A

49

48

47

46

45

44

43

42

41

40

3F

3E

3D

3C

3B

3A

39

38

37

36

35

34

33

32

31

30

2F

2E

2D

2C

BR4

2B

2A

29

28

27

26

25

24

23

22

21

20

1F

1E

1D

1C

1B

1A

19

18

17

16

15

14

13

12

11

BCD

391

390

389

388

387

386

385

384

383

382

381

380

379

378

377

376

375

374

373

372

371

370

369

368

367

366

365

364

363

362

361

360

359

358

357

356

355

354

353

352

351

350

349

348

347

346

BCD

345

344

343

342

341

340

339

338

337

336

335

334

333

332

331

330

329

328

327

326

325

324

323

322

321

320

319

318

317

316

315

314

313

312

311

310

309

308

307

306

305

304

303

302

301

300

BCD

299

298

297

296

295

294

293

292

291

290

289

288

287

286

285

284

283

282

281

280

279

278

277

276

275

274

273

272

271

270

269

268

267

266

265

264

263

262

261

260

259

258

257

256

255

254

1

0.2140 –11.17

0.2135 –11.20

0.2129 –11.22

0.2124 –11.24

0.2118 –11.26

0.2113 –11.29

0.2107 –11.31

0.2102 –11.33

0.2096 –11.35

0.2091 –11.38

0.2085 –11.40

0.2080 –11.42

0.2074 –11.44

0.2069 –11.47

0.2063 –11.49

0.2058 –11.51

0.2052 –11.54

0.2047 –11.56

0.2041 –11.58

0.2036 –11.61

0.2031 –11.63

0.2025 –11.65

0.2020 –11.68

0.2014 –11.70

0.2009 –11.72

0.2003 –11.75

0.1998 –11.77

0.1992 –11.79

0.1987 –11.82

0.1981 –11.84

0.1976 –11.87

0.1970 –11.89

0.1965 –11.91

0.1959 –11.94

0.1954 –11.96

0.1948 –11.99

0.1943 –12.01

0.1937 –12.04

0.1932 –12.06

0.1927 –12.09

0.1921 –12.11

0.1916 –12.14

0.1910 –12.16

0.1905 –12.19

0.1899 –12.21

0.1894 –12.24

1

0.1888 –12.26

0.1883 –12.29

0.1877 –12.31

0.1872 –12.34

0.1866 –12.36

0.1861 –12.39

0.1855 –12.41

0.1850 –12.44

0.1844 –12.46

0.1839 –12.49

0.1834 –12.52

0.1828 –12.54

0.1823 –12.57

0.1817 –12.59

0.1812 –12.62

0.1806 –12.65

0.1801 –12.67

0.1795 –12.70

0.1790 –12.73

0.1784 –12.75

0.1779 –12.78

0.1773 –12.81

0.1768 –12.83

0.1762 –12.86

0.1757 –12.89

0.1751 –12.91

0.1746 –12.94

0.1740 –12.97

0.1735 –13.00

0.1730 –13.02

0.1724 –13.05

0.1719 –13.08

0.1713 –13.11

0.1708 –13.13

0.1702 –13.16

0.1697 –13.19

0.1691 –13.22

0.1686 –13.25

0.1680 –13.27

0.1675 –13.30

0.1669 –13.33

0.1664 –13.36

0.1658 –13.39

0.1653 –13.42

0.1647 –13.45

0.1642 –13.47

1

0

0.1636 –13.50

0.1631 –13.53

0.1626 –13.56

0.1620 –13.59

0.1615 –13.62

0.1609 –13.65

0.1604 –13.68

0.1598 –13.71

0.1593 –13.74

0.1587 –13.77

0.1582 –13.80

0.1576 –13.83

0.1571 –13.86

0.1565 –13.89

0.1560 –13.92

0.1554 –13.95

0.1549 –13.98

0.1543 –14.01

0.1538 –14.04

0.1532 –14.07

0.1527 –14.10

0.1522 –14.14

0.1516 –14.17

0.1511 –14.20

0.1505 –14.23

0.1500 –14.26

0.1494 –14.29

0.1489 –14.33

0.1483 –14.36

0.1478 –14.39

0.1472 –14.42

0.1467 –14.45

0.1461 –14.49

0.1456 –14.52

0.1450 –14.55

0.1445 –14.58

0.1439 –14.62

0.1434 –14.65

0.1428 –14.68

0.1423 –14.72

0.1418 –14.75

0.1412 –14.78

0.1407 –14.82

0.1401 –14.85

0.1396 –14.89

0.1390 –14.92

10

0F

0E

0D

0C

0B

0A

09

08

07

06

05

04

03

02

01

00

FF

FE

8-46

MC145540

MOTOROLA

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

BR4

FD

FC

FB

FA

F9

F8

F7

F6

F5

F4

F3

F2

F1

F0

EF

EE

ED

EC

EB

EA

E9

E8

E7

E6

E5

E4

E3

E2

E1

E0

DF

DE

DD

DC

DB

DA

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

BR4

CF

CE

CD

CC

CB

CA

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

BF

BE

BD

BC

BB

BA

B9

B8

B7

B6

B5

B4

B3

B2

B1

B0

AF

AE

AD

AC

AB

AA

A9

A8

A7

A6

A5

A4

A3

A2

BR4

A1

A0

9F

9E

9D

9C

9B

9A

99

98

97

96

95

94

93

92

91

90

8F

8E

8D

8C

8B

8A

89

88

87

86

85

84

83

82

81

80

7F

7E

7D

7C

7B

7A

79

78

77

76

75

74

BCD

253

252

251

250

249

248

247

246

245

244

243

242

241

240

239

238

237

236

235

234

233

232

231

230

229

228

227

226

225

224

223

222

221

220

219

218

217

216

215

214

213

212

211

210

209

208

BCD

207

206

205

204

203

202

201

200

199

198

197

196

195

194

193

192

191

190

189

188

187

186

185

184

183

182

181

180

179

178

177

176

175

174

173

172

171

170

169

168

167

166

165

164

163

162

BCD

161

160

159

158

157

156

155

154

153

152

151

150

149

148

147

146

145

144

143

142

141

140

139

138

137

136

135

134

133

132

131

130

129

128

127

126

125

124

123

122

121

120

119

118

117

116

0

0.1385 –14.95

0.1379 –14.99

0.1374 –15.02

0.1368 –15.06

0.1363 –15.09

0.1357 –15.13

0.1352 –15.16

0.1346 –15.20

0.1341 –15.23

0.1335 –15.27

0.1330 –15.30

0.1325 –15.34

0.1319 –15.38

0.1314 –15.41

0.1308 –15.45

0.1303 –15.49

0.1297 –15.52

0.1292 –15.56

0.1286 –15.60

0.1281 –15.63

0.1275 –15.67

0.1270 –15.71

0.1264 –15.74

0.1259 –15.78

0.1253 –15.82

0.1248 –15.86

0.1242 –15.90

0.1237 –15.93

0.1231 –15.97

0.1226 –16.01

0.1221 –16.05

0.1215 –16.09

0.1210 –16.13

0.1204 –16.17

0.1199 –16.21

0.1193 –16.25

0.1188 –16.29

0.1182 –16.33

0.1177 –16.37

0.1171 –16.41

0.1166 –16.45

0.1160 –16.49

0.1155 –16.53

0.1149 –16.57

0.1144 –16.61

0.1138 –16.66

0

0.1133 –16.70

0.1127 –16.74

0.1122 –16.78

0.1117 –16.82

0.1111 –16.87

0.1106 –16.91

0.1100 –16.95

0.1095 –17.00

0.1089 –17.04

0.1084 –17.08

0.1078 –17.13

0.1073 –17.17

0.1067 –17.22

0.1062 –17.26

0.1056 –17.31

0.1051 –17.35

0.1045 –17.40

0.1040 –17.44

0.1034 –17.49

0.1029 –17.53

0.1023 –17.58

0.1018 –17.63

0.1013 –17.67

0.1007 –17.72

0.1002 –17.77

0.0996 –17.82

0.0991 –17.86

0.0985 –17.91

0.0980 –17.96

0.0974 –18.01

0.0969 –18.06

0.0963 –18.11

0.0958 –18.16

0.0952 –18.21

0.0947 –18.26

0.0941 –18.31

0.0936 –18.36

0.0930 –18.41

0.0925 –18.46

0.0919 –18.51

0.0914 –18.56

0.0909 –18.61

0.0903 –18.67

0.0898 –18.72

0.0892 –18.77

0.0887 –18.83

0

0.0881 –18.88

0.0876 –18.93

0.0870 –18.99

0.0865 –19.04

0.0859 –19.10

0.0854 –19.15

0.0848 –19.21

0.0843 –19.27

0.0837 –19.32

0.0832 –19.38

0.0826 –19.44

0.0821 –19.49

0.0815 –19.55

0.0810 –19.61

0.0805 –19.67

0.0799 –19.73

0.0794 –19.79

0.0788 –19.85

0.0783 –19.91

0.0777 –19.97

0.0772 –20.03

0.0766 –20.09

0.0761 –20.16

0.0755 –20.22

0.0750 –20.28

0.0744 –20.35

0.0739 –20.41

0.0733 –20.47

0.0728 –20.54

0.0722 –20.61

0.0717 –20.67

0.0712 –20.74

0.0706 –20.80

0.0701 –20.87

0.0695 –20.94

0.0690 –21.01

0.0684 –21.08

0.0679 –21.15

0.0673 –21.22

0.0668 –21.29

0.0662 –21.36

0.0657 –21.43

0.0651 –21.51

0.0646 –21.58

0.0640 –21.65

0.0635 –21.73

MOTOROLA

MC145540

8-47

Table 8-3. Attenuation Coefficients for Tone Generator (continued)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

HEX

BR5

HEX VOLTS

RMS

dBm

(600Ω)

BR4

73

72

71

70

6F

6E

6D

6C

6B

6A

69

68

67

66

65

64

63

62

61

60

5F

5E

5D

5C

5B

5A

59

58

57

56

55

54

53

52

51

50

4F

4E

4D

BR4

4C

4B

4A

49

48

47

46

45

44

43

42

41

40

3F

3E

3D

3C

3B

3A

39

38

37

36

35

34

33

32

31

30

2F

2E

2D

2C

2B

2A

29

28

27

26

BR4

25

24

23

22

21

20

1F

1E

1D

1C

1B

1A

19

18

17

16

15

14

13

12

11

BCD

115

114

113

112

111

110

109

108

107

106

105

104

103

102

101

100

99

BCD

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

BCD

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

0

0.0629 –21.80

0.0624 –21.88

0.0618 –21.96

0.0613 –22.03

0.0608 –22.11

0.0602 –22.19

0.0597 –22.27

0.0591 –22.35

0.0586 –22.43

0.0580 –22.51

0.0575 –22.59

0.0569 –22.68

0.0564 –22.76

0.0558 –22.84

0.0553 –22.93

0.0547 –23.02

0.0542 –23.10

0.0536 –23.19

0.0531 –23.28

0.0525 –23.37

0.0520 –23.46

0.0514 –23.55

0.0509 –23.65

0.0504 –23.74

0.0498 –23.84

0.0493 –23.93

0.0487 –24.03

0.0482 –24.13

0.0476 –24.23

0.0471 –24.33

0.0465 –24.43

0.0460 –24.53

0.0454 –24.64

0.0449 –24.74

0.0443 –24.85

0.0438 –24.95

0.0432 –25.06

0.0427 –25.17

0.0421 –25.29

0

0.0416 –25.40

0.0410 –25.52

0.0405 –25.63

0.0400 –25.75

0.0394 –25.87

0.0389 –25.99

0.0383 –26.11

0.0378 –26.24

0.0372 –26.37

0.0367 –26.50

0.0361 –26.63

0.0356 –26.76

0.0350 –26.89

0.0345 –27.03

0.0339 –27.17

0.0334 –27.31

0.0328 –27.45

0.0323 –27.60

0.0317 –27.75

0.0312 –27.90

0.0306 –28.05

0.0301 –28.21

0.0296 –28.37

0.0290 –28.53

0.0285 –28.70

0.0279 –28.87

0.0274 –29.04

0.0268 –29.21

0.0263 –29.39

0.0257 –29.57

0.0252 –29.76

0.0246 –29.95

0.0241 –30.15

0.0235 –30.35

0.0230 –30.55

0.0224 –30.76

0.0219 –30.98

0.0213 –31.20

0.0208 –31.42

0

0.0203 –31.65

0.0197 –31.89

0.0192 –32.14

0.0186 –32.39

0.0181 –32.65

0.0175 –32.91

0.0170 –33.19

0.0164 –33.47

0.0159 –33.77

0.0153 –34.07

0.0148 –34.39

0.0142 –34.72

0.0137 –35.06

0.0131 –35.41

0.0126 –35.78

0.0120 –36.17

0.0115 –36.57

0.0109 –37.00

0.0104 –37.44

0.0099 –37.91

0.0093 –38.41

0.0088 –38.93

0.0082 –39.49

0.0077 –40.09

0.0071 –40.74

0.0066 –41.43

0.0060 –42.19

0.0055 –43.02

0.0049 –43.93

0.0044 –44.95

0.0038 –46.11

0.0033 –47.45

0.0027 –49.04

0.0022 –50.98

0.0016 –53.47

0.0011 –57.00

0.0005 –63.02

98

97

96

95

94

10

0F

0E

0D

0C

0B

0A

09

08

07

06

05

04

03

02

01

00

93

92

91

90

89

88

87

86

8

85

7

84

6

83

5

82

4

81

3

80

2

79

1

78

0

0.0000

–∞

77

8-48

MC145540

MOTOROLA

NOTES

10/1/93

MOTOROLA DISTRIBUTOR AND WORLDWIDE SALES OFFICES

AUTHORIZED NORTH AMERICAN DISTRIBUTORS

Sunnyvale

Duluth

UNITED STATES

ALABAMA

Hamilton/Avnet Electronics . . (408)743-3300

Arrow/Schweber Electronics . (404)497-1300

Hall-Mark Electronics . . . . . . (404)623-4400

Hamilton/Avnet Electronics . . . (404)446-0611

Time Electronics . . . . . . . . . . (408)734-9888

Torrance

Huntsville

Arrow/Schweber Electronics . (205)837-6955

Time Electronics . . . . . . . . . . (310)320-0880

Norcross

Future Electronics . . . . . . . . . (404)441-7676

Newark . . . . . . . . . . . . . . . . . . (404)448-1300

Time Electronics . . . . . . . . . . (404)368-0969

Tustin

Future Electronics . . . . . . . . . (205)830-2322

Hall-Mark Electronics . . . . . . (205)837-8700

Newark . . . . . . . . . . . . . . . . . . (205)837-9091

Time Electronics . . . . . . . . . . . (205)721-1133

Time Electronics . . . . . . . . . . (714)669-0100

West Hills

Newark . . . . . . . . . . . . . . . . . . (818)888-3718

Woodland Hills

Hamilton/Avnet Electronics . . (818)594-0404

ILLINOIS

Bensenville

Hamilton/Avnet Electronics . . (708)860-7700

Richardson Electronics . . . . (615)594-5600

Arizona

Chicago

COLORADO

Broomfield

Future Electronics . . . . . . . . . (303)421-0123

Colorado Springs

Newark . . . . . . . . . . . . . . . . . . (719)592-9494

Newark Electronics Corp. . . (312)784-5100

Chandler

Hamilton/Avnet Electronics . . (602)961-0836

Hoffman Estates

Future Electronics . . . . . . . . . (708)882-1255

Phoenix

Future Electronics . . . . . . . . . (602)968-7140

Itasca

Hall-Mark Electronics . . . . . . (602)437-1200

Newark Electronics . . . . . . . . (602)864-9905

Wyle Laboratories . . . . . . . . . (602)437-2088

Arrow/Schweber Electronics (708)250-0500

LaFox

Denver

Richardson Electronics . . . . (708)208-2401

Newark . . . . . . . . . . . . . . . . . . (303)757-3351

Schaumburg

Newark . . . . . . . . . . . . . . . . . . (708)310-8980

Tempe

Englewood

Arrow/Schweber Electronics . (303)799-0258

Arrow/Schweber Electronics . (602)431-0030

Time Electronics . . . . . . . . . . (708)303-3000

Wooddale

Hall-Mark Electronics . . . . . . (708)860-3800

Time Electronics . . . . . . . . . . (602)967-2000

Hall-Mark Electronics . . . . . . (303)790-1662

Hamilton/Avnet Electronics . . (303)740-1000

Time Electronics . . . . . . . . . . (303)721-8882

CALIFORNIA

Agoura Hills

Thornton

INDIANA

Time Electronics Corporate . . (818)707-2890

Wyle Laboratories . . . . . . . . . (303)457-9953

Indianapolis

Arrow/Schweber Electronics . (317)299-2071

Hall-Mark Electronics . . . . . . (317)872-8875

Hamilton/Avnet Electronics . . (317)844-9333

Newark . . . . . . . . . . . . . . . . . . (317)259-0085

Time Electronics . . . . . . . . . . (708)303-3000

Belmont

CONNECTICUT

Richardson Electronics . . . . (415)592-9225

Bethel

Calabassas

Arrow/Schweber Electronics . (818)880-9686

Wyle Laboratories . . . . . . . . . (818)880-9000

Chatsworth

Future Electronics . . . . . . . . . (818)772-6240

Hall-Mark Electronics . . . . . . (818)773-4500

Time Electronics . . . . . . . . . . (818)998-7200

Costa Mesa

Hamilton/Avnet Electronics . . (714)754-6092

Culver City

Hamilton/Avnet Corporate . . (213)558-2000

Future Electronics . . . . . . . . . (203)743-9594

Cheshire

Hall-Mark Electronics . . . . . . (203)271-2844

Ft. Wayne

Newark . . . . . . . . . . . . . . . . . . (219)484-0766

Danbury

Hamilton/Avnet Electronics . . (203)743-6077

Southbury

Time Electronics . . . . . . . . . . (203)271-3200

Wallingfort

Arrow/Schweber Electronics . (203)265-7741

IOWA

Cedar Rapids

Hamilton/Avnet Electronics . . (319)362-4757

Newark . . . . . . . . . . . . . . . . . . (319)393-3800

Time Electronics . . . . . . . . . . (314)391-6444

Windsor

Newark . . . . . . . . . . . . . . . . . . (203)683-8860

Gardena

KANSAS

Lenexa

Hamilton/Avnet Electronics . . (213)516-6498

FLORIDA

Irvine

Arrow/Schweber Electronics . (913)541-9542

Altamonte Springs

Future Electronics . . . . . . . . . (407)767-8414

Casselberry

Hall-Mark Electronics . . . . . . (407)830-5855

Clearwater

Future Electronics . . . . . . . . . (813)530-1222

Hall-Mark Electronics . . . . . . (813)541-7440

Deerfield Beach

Arrow/Schweber Electronics . (305)429-8200

Ft. Lauderdale

Hamilton/Avnet Electronics . . (305)767-6377

Time Electronics . . . . . . . . . . (305)484-1778

Lake Mary

Arrow/Schweber Electronics . (407)333-9300

Arrow/Schweber Electronics (714)587-0404

Hall-Mark Electronics . . . . . . (913)888-4747

Overland Park

Hamilton/Avnet Electronics . . (913)888-8900

Newark . . . . . . . . . . . . . . . . . . (913)677-0727

Time Electronics . . . . . . . . . . (314)391-6444

Future Electronics . . . . . . . . . (714)250-4141

Hall-Mark Electronics . . . . . . (714)727-6000

Wyle Laboratories Corporate . (714)753-9953

Wyle Laboratories . . . . . . . . . (714)863-9953

Mountain View

Richardson Electronics . . . . (415)960-6900

MARYLAND

Beltsville

Newark . . . . . . . . . . . . . . . . . . (301)604-1700

Columbia

Arrow/Schweber Electronics . (301)596-7800

Future Electronics . . . . . . . . . (301)290-0600

Hall-Mark Electronics . . . . . . (301)988-9800

Hamilton/Avnet Electronics . . (301)995-3500

Time Electronics . . . . . . . . . . (301)964-3090

Orange

Newark . . . . . . . . . . . . . . . . . . (714)634-8224

Rocklin

Hall-Mark Electronics . . . . . . (916)624-9781

Sacramento

Hamilton/Avnet Electronics . . (916)925-2216

Newark . . . . . . . . . . . . . . . . . . (916)721-1633

Wyle Laboratories . . . . . . . . . (916)638-5282

San Diego

Arrow/Schweber Electronics (619)565-4800

Future Electronics . . . . . . . . . (619)278-5020

Hall-Mark Electronics . . . . . . (619)268-1201

Hamilton/Avnet Electronics . . (619)571-8730

Newark . . . . . . . . . . . . . . . . . . (619)569-9877

Wyle Laboratories . . . . . . . . . (619)565-9171

San Francisco

Newark . . . . . . . . . . . . . . . . . . (415)571-5300

San Jose

Arrow/Schweber Electronics . (408)441-9700

Orlando

Hamilton/Avnet Electronics . . (407)628-3888

MASSACHUSETTS

Newark . . . . . . . . . . . . . . . . . . (407)896-8350

Time Electronics . . . . . . . . . . (407)841-6565

Plantation

Newark . . . . . . . . . . . . . . . . . . (305)424-4400

Pompano Beach

Hall-Mark Electronics . . . . . . (305)971-9280

Tampa/St. Petersburg

Hamilton/Avnet Electronics . . (813)573-3930

Newark . . . . . . . . . . . . . . . . . . (813)287-1578

Time Electronics . . . . . . . . . . (407)841-6565

Winter Park

Richardson Electronics . . . . (407)644-1453

Billerica

Hall-Mark Electronics . . . . . . (508)667-0902

Boston

Arrow/Schweber Electronics . (508)658-0900

Hamilton/Avnet Electronics . . (508)531-7430

Bolton

Future Corporate . . . . . . . . . . (508)779-3000

Burlington

Wyle Laboratories . . . . . . . . . (617)272-7300

Methuen

Arrow/Schweber Electronics . (408)428-6400

Future Electronics . . . . . . . . . . (408)434-1122

Hall-Mark Electronics . . . . . . (408)432-4000

Newark . . . . . . . . . . . . . . . . . . (508)683-0913

Norwell

GEORGIA

Richardson Electronics . . . . (617)871-5162

Santa Clara

Wyle Laboratories . . . . . . . . . (408)727-2500

Atlanta

Peabody

Time Electronics . . . . . . . . . . (404)351-3545

Time Electronics . . . . . . . . . . (508)532-9900

10/1/93

AUTHORIZED DISTRIBUTORS – continued

Future Electronics . . . . . . . . . . (716)272-1120

Hall-Mark Electronics . . . . . . (716)425-3300

Hamilton/Avnet Electronics . . (716)292-0730

Richardson Electronics . . . . . (716)264-1100

Time Electronics . . . . . . . . . . (315)432-0355

Rockville Centre

Richardson Electronics . . . . (516)872-4400

Syracuse

Hamilton/Avnet Electronics . . (315)437-2641

Newark . . . . . . . . . . . . . . . . . . (412)788-4790

Time Electronics . . . . . . . . . . (614)794-3301

UNITED STATES – continued

MICHIGAN

TENNESSEE

Detroit

Newark . . . . . . . . . . . . . . . . . . (313)967-0600

Franklin

Grand Rapids

Hamilton/Avnet Electronics . . (616)243-8805

Richardson Electronics . . . . (615)791-4900

Knoxville

Newark . . . . . . . . . . . . . . . . . . (615)588-6493

Livonia

Arrow/Schweber Electronics . (313)462-2290

TEXAS

Future Electronics . . . . . . . . . (313)261-5270

Hall-Mark Electronics . . . . . . (313)462-1205

Hamilton/Avnet Electronics . . (313)347-4270

Time Electronics . . . . . . . . . . (614)794-3301

Time Electronics . . . . . . . . . . (315)432-0355

Austin

NORTH CAROLINA

Arrow/Schweber Electronics . (512)835-4180

Hall-Mark Electronics . . . . . . (512)258-8848

Hamilton/Avnet Electronics . . (512)832-4306

Newark . . . . . . . . . . . . . . . . . . (512)338-0287

Time Electronics . . . . . . . . . . (512)346-7346

Wyle Laboratories . . . . . . . . . (512)345-8853

Charlotte

Future Electronics . . . . . . . . . (704)455-9030

Richardson Electronics . . . . (704)548-9042

Greensboro

Newark . . . . . . . . . . . . . . . . . . (919)292-7240

MINNESOTA

Eden Prairie

Arrow/Schweber Electronics . (612)941-5280

Future Electronics . . . . . . . . . (612)944-2200

Hall-Mark Electronics . . . . . . (612)881-2600

Time Electronics . . . . . . . . . . (612)943-2433

Minneapolis

Hamilton/Avnet Electronics . . (612)932-0600

Raleigh

Carollton

Arrow/Schweber Electronics . (214)380-6464

Arrow/Schweber Electronics . (919)876-3132

Future Electronics . . . . . . . . . . (919)790-7111

Hall-Mark Electronics . . . . . . (919)872-0712

Hamilton/Avnet Electronics . . (919)878-0810

Time Electronics . . . . . . . . . . (919)693-5166

Dallas

Future Electronics . . . . . . . . . (214)437-2437

Hall-Mark Corporate . . . . . . . (214)343-5000

Hall-Mark Electronics . . . . . . (214)553-4300

Hamilton/Avnet Electronics . . (214)308-8140

Richardson Electronics . . . . (214)239-3680

Time Electronics . . . . . . . . . . (214)644-4644

Wyle Laboratories . . . . . . . . . (214)235-9953

Newark . . . . . . . . . . . . . . . . . . (612)331-6350

MISSOURI

Earth City

OHIO

Centerville

Arrow/Schweber Electronics . (513)435-5563

Cleveland

Hall-Mark Electronics . . . . . . (216)349-4632

Hamilton/Avnet Electronics . . (216)349-5100

Newark . . . . . . . . . . . . . . . . . . (216)391-9330

Time Electronics . . . . . . . . . . (614)794-3301

Columbus

Hamilton/Avnet Electronics . . (614)882-7004

Hall-Mark Electronics . . . . . . (314)291-5350

Hamilton/Avnet Electronics . . (314)537-1600

Ft. Worth

Allied Electronics . . . . . . . . . . (817)336-5401

St. Louis

Arrow/Schweber Electronics . (314)567-6888

Houston

Future Electronics . . . . . . . . . (314)469-6805

Newark . . . . . . . . . . . . . . . . . . (314)298-2505

Time Electronics . . . . . . . . . . (314)391-6444

Arrow/Schweber Electronics . (713)530-4700

Future Electronics . . . . . . . . . (713)556-8696

Hall-Mark Electronics . . . . . . (713)781-6100

Hamilton/Avnet Electronics . . (713)240-7898

Newark . . . . . . . . . . . . . . . . . . (713)270-4800

Time Electronics . . . . . . . . . . (713)530-0800

Wyle Laboratories . . . . . . . . . (713)879-9953

NEW HAMPSHIRE

Manchester

Hamilton/Avnet Electronics . . (603)624-9400

Newark . . . . . . . . . . . . . . . . . . (614)431-0809

Time Electronics . . . . . . . . . . (614)794-3301

Dayton

NEW JERSEY

Cherry Hill

Hamilton/Avnet Electronics . . (609)424-0100

Hamilton/Avnet Electronics . . (513)439-6700

Richardson

Newark . . . . . . . . . . . . . . . . . . (214)235-1998

Newark . . . . . . . . . . . . . . . . . . (513)294-8980

Time Electronics . . . . . . . . . . (614)794-3301

Mayfield Heights

Future Electronics . . . . . . . . . (216)449-6996

Fairfield

UTAH

Future Electronics . . . . . . . . . (201)299-0400

Salt Lake City

Arrow/Schweber Electronics . (801)973-6913

Future Electronics . . . . . . . . . (801)972-8489

Hamilton/Avnet Electronics . . (801)972-2800

Newark . . . . . . . . . . . . . . . . . . (801)261-5660

West Valley City

Hall-Mark Electronics . . . . . . (801)972-1008

Time Electronics . . . . . . . . . . (801)973-8494

Wyle Laboratories . . . . . . . . . (801)974-9953

Newark . . . . . . . . . . . . . . . . . . (201)882-0300

Solon

Marlton

Arrow/Schweber Electronics . (216)248-3990

Arrow/Schweber Electronics . (609)596-8000

Toledo

Future Electronics . . . . . . . . . (609)778-7600

Mount Laurel

Hall-Mark Electronics . . . . . . (609)235-1900

Pinebrook

Arrow/Schweber Electronics . (201)227-7880

Parsippany

Hall-Mark Electronics . . . . . . (201)515-3000

Hamilton/Avnet Electronics . . (419)242-6610

Worthington

Hall-Mark Electronics . . . . . . (614)888-3313

OKLAHOMA

Tulsa

Hall-Mark Electronics . . . . . . . (918)254-6110

WASHINGTON

Hamilton/Avnet Electronics . . (918)252-7297

Newark . . . . . . . . . . . . . . . . . . (918)252-5070

Hamilton/Avnet Electronics . . (201)575-3390

Bellevue

Wayne

Almac Electronics Corp. . . . (206)643-9992

Time Electronics . . . . . . . . . . (201)785-8250

OREGON

Future Electronics . . . . . . . . . (206)881-8199

Hall-Mark Electronics . . . . . . (206)547-0415

Newark . . . . . . . . . . . . . . . . . . (206)641-9800

Richardson Electronics . . . . (206)646-7224

Redmond

Hamilton/Avnet Electronics . . (206)241-8555

NEW MEXICO

Albuquerque

Alliance Electronics . . . . . . . (505)292-3360

Beaverton

Arrow/Almac Electronics Corp. (503)629-8090

Future Electronics . . . . . . . . . (503)645-9454

Wyle Laboratories . . . . . . . . . (503)643-7900

Hamilton/Avnet Electronics . . (505)345-0001

Newark . . . . . . . . . . . . . . . . . . (505)828-1878

Portland

Time Electronics . . . . . . . . . . (206)820-1525

Wyle Laboratories . . . . . . . . . . (206)881-1150

Hamilton/Avnet Electronics . . (503)627-0201

NEW YORK

Commack

Newark . . . . . . . . . . . . . . . . . . (516)499-1216

Newark . . . . . . . . . . . . . . . . . . (503)297-1984

Time Electronics . . . . . . . . . . (503)626-2979

Spokane

Arrow/Almac Electronics Corp. (509)924-9500

PENNSYLVANIA

Fairport

WISCONSIN

Hall-Mark Electronics . . . . . . (716)425-3300

Erie

Hauppauge

Arrow/Schweber Electronics . (516)231-1000

Future Electronics . . . . . . . . . (516)234-4000

Hall-Mark Electronics . . . . . . (516)737-0600

Hamilton/Avnet Electronics . . (516)231-9800

Hamilton/Avnet Electronics . . (814)455-6767

Brookfield

Arrow/Schweber Electronics . (414)792-0150

Milwaukee

Time Electronics . . . . . . . . . . (708)303-3000

New Berlin

Hall-Mark Electronics . . . . . . (414)797-7844

Hamilton/Avnet Electronics . . (414)784-4510

King of Prussia

Newark . . . . . . . . . . . . . . . . . . (215)265-0933

Montgomeryville

Richardson Electronics . . . . (215)628-0805

Philadelphia

Hall-Mark Electronics . . . . . . (215)355-7300

Liverpool

Future Electronics . . . . . . . . . (315)451-2371

Time Electronics . . . . . . . . . . (609)596-6700

Pittsburgh

Arrow/Schweber Electronics . (412)963-6807

Pittsford

Waukesha

Newark . . . . . . . . . . . . . . . . . . (716)381-4244

Future Electronics . . . . . . . . . (414)786-1884

Rochester

Arrow/Schweber Electronics . (716)427-0300

Wauwatosa

Newark . . . . . . . . . . . . . . . . . . (414)453-9100

Hamilton/Avnet Electronics . . (412)281-4150

10/1/93

AUTHORIZED DISTRIBUTORS – continued

Hamilton/Avnet Electronics . . (604)420-4101

Newark . . . . . . . . . . . . . . . . . . (800)463-9275

Electro Sonic Inc. . . . . . . . . . (416)494-1666

Future Electronics . . . . . . . . . (416)612-9200

Hamilton/Avnet Electronics . . (416)564-6060

Newark . . . . . . . . . . . . . . . . . . (800)463-9275

Richardson Electronics . . . . (800)348-5530

CANADA

ALBERTA

Calgary

MANITOBA

Winnipeg

Electro Sonic Inc. . . . . . . . . (403)255-9550

Electro Sonic Inc. . . . . . . . . (204)783-3105

Future Electronics . . . . . . . . . (403)250-5550

Hamilton/Avnet Electronics . . (800)663-5500

Edmonton

Future Electronics . . . . . . . . . (403)438-2858

Future Electronics . . . . . . . . . . (204)786-7711

Hamilton/Avnet Electronics . . (800)663-5500

QUEBEC

ONTARIO

Ottawa

Montreal

Arrow Electronics . . . . . . . . . . (514)421-7411

Hamilton/Avnet Electronics . (800)663-5500

Arrow Electronics . . . . . . . . . (613)226-6903

Future Electronics . . . . . . . . . (514)694-7710

Hamilton/Avnet Electronics . . (514)335-1000

Newark . . . . . . . . . . . . . . . . . . (800)463-9275

Richardson Electronics . . . . (800)348-5530

BRITISH COLUMBIA

Vancouver

Arrow Electronics . . . . . . . . . (604)421-2333

Electro Sonic Inc. . . . . . . . . . (613)728-8333

Future Electronics . . . . . . . . . (613)820-8313

Hamilton/Avnet Electronics . . (613)226-1700

Electro Sonic Inc. . . . . . . . . . . (604)273-2911

Future Electronics . . . . . . . . . . (604)294-1166

Toronto

Quebec City

Future Electronics . . . . . . . . . (418)877-6666

Arrow Electronics . . . . . . . . . (416)670-7769

SALES OFFICES

TEXAS, Austin . . . . . . . . . . . . . . . (512)873-2000

TEXAS, Houston . . . . . . . . . . . . . (800)343-2692

TEXAS, Plano . . . . . . . . . . . . . . . (214)516-5100

VIRGINIA, Richmond . . . . . . . . . (804)285-2100

WASHINGTON, Bellevue . . . . . . (206)454-4160

Seattle Access . . . . . . . . . . . . . (206)622-9960

WISCONSIN, Milwaukee/

JAPAN, Tokyo . . . . . . . . . . . . . 81(03)3440-3311

JAPAN, Yokohama . . . . . . . . . 81(045)472-2751

KOREA, Pusan . . . . . . . . . . . . . 82(51)4635-035

KOREA, Seoul . . . . . . . . . . . . . . . . 82(2)554-5118

MALAYSIA, Penang . . . . . . . . . . . . 60(4)374514

MEXICO, Mexico City . . . . . . . . . 52(5)282-2864

MEXICO, Guadalajara . . . . . . . . 52(36)21-8977

Marketing . . . . . . . . . . . . . . . . . . 52(36)21-9023

Customer Service . . . . . . . . . . 52(36)669-9160

NETHERLANDS, Best . . . . . . . (31)4998 612 11

PUERTO RICO, San Juan . . . . . (809)793-2170

SINGAPORE . . . . . . . . . . . . . . . . . . (65)2945438

SPAIN, Madrid . . . . . . . . . . . . . . . 34(1)457-8204

or . . . . . . . . . . . . . . . . . . . . . . . . . 34(1)457-8254

SWEDEN, Solna . . . . . . . . . . . . . 46(8)734-8800

SWITZERLAND, Geneva . . . . . 41(22)799 11 11

SWITZERLAND, Zurich . . . . . . . 41(1)730-4074

TAIWAN, Taipei . . . . . . . . . . . . . 886(2)717-7089

THAILAND, Bangkok . . . . . . . . . (66-2)254-4910

UNITED KINGDOM, Aylesbury . . 44(296)395-252

UNITED STATES

ALABAMA, Huntsville . . . . . . . . (205)464-6800

ARIZONA, Tempe . . . . . . . . . . . . (602)897-5056

CALIFORNIA, Agoura Hills . . . . (818)706-1929

CALIFORNIA, Los Angeles . . . . (310)417-8848

CALIFORNIA, Irvine . . . . . . . . . . (714)753-7360

CALIFORNIA, Roseville . . . . . . . (916)922-7152

CALIFORNIA, San Diego . . . . . (619)541-2163

CALIFORNIA, Sunnyvale . . . . . (408)749-0510

Brookfield . . . . . . . . . . . . . . . . . . (414)792-0122

Field Applications Engineering Available

Through All Sales Offices

COLORADO, Colorado Springs

. (719)599-7497

COLORADO, Denver . . . . . . . . . (303)337-3434

CONNECTICUT, Wallingford . . . (203)949-4100

FLORIDA, Maitland . . . . . . . . . . . (407)628-2636

FLORIDA, Pompano Beach/

Ft. Lauderdale . . . . . . . . . . . . . . (305)486-9776

FLORIDA, Clearwater . . . . . . . . . (813)538-7750

GEORGIA, Atlanta . . . . . . . . . . . (404)729-7100

IDAHO, Boise . . . . . . . . . . . . . . . . (208)323-9413

ILLINOIS, Chicago/

CANADA

BRITISH COLUMBIA, Vancouver . (604)293-7650

ONTARIO, Toronto . . . . . . . . . . . (416)497-8181

ONTARIO, Ottawa . . . . . . . . . . . . (613)226-3491

QUEBEC, Montreal . . . . . . . . . . . (514)731-6881

INTERNATIONAL

AUSTRALIA, Melbourne . . . . . . (61-3)887-0711

AUSTRALIA, Sydney . . . . . . . . . 61(2)906-3855

BRAZIL, Sao Paulo . . . . . . . . . . 55(11)815-4200

CHINA, Beijing . . . . . . . . . . . . . . . . . 86-505-2180

FINLAND, Helsinki . . . . . . . . . 358-0-351 61191

car phone . . . . . . . . . . . . . . . . . . 358(49)211501

FRANCE, Paris/Vanves . . . . . . 33(1)40 955 900

GERMANY, Langenhagen/

Hannover . . . . . . . . . . . . . . . . . . 49(511)789911

GERMANY, Munich . . . . . . . . . . . . 49 89 92103-0

GERMANY, Nurenberg . . . . . . . . 49 911 64-3044

GERMANY, Sindelfingen . . . . . . 49 7031 69 910

GERMANY, Wiesbaden . . . . . . . 49 611 761921

HONG KONG, Kwai Fong . . . . . . . 852-4808333

Tai Po . . . . . . . . . . . . . . . . . . . . . . . 852-6668333

INDIA, Bangalore . . . . . . . . . . . (91-812)627094

ISRAEL, Tel Aviv . . . . . . . . . . . . 972(3)753-8222

ITALY, Milan . . . . . . . . . . . . . . . . . . . . 39(2)82201

JAPAN, Aizu . . . . . . . . . . . . . . . . 81(241)272231

JAPAN, Atsugi . . . . . . . . . . . . . 81(0462)23-0761

JAPAN, Kumagaya . . . . . . . . . 81(0485)26-2600

JAPAN, Kyushu . . . . . . . . . . . . 81(092)771-4212

JAPAN, Mito . . . . . . . . . . . . . . . 81(0292)26-2340

JAPAN, Nagoya . . . . . . . . . . . 81(052)232-1621

JAPAN, Osaka . . . . . . . . . . . . . . 81(06)305-1801

JAPAN, Sendai . . . . . . . . . . . . . 81(22)268-4333

JAPAN, Tachikawa . . . . . . . . . 81(0425)23-6700

Hoffman Estates . . . . . . . . . . . . (708)490-9500

INDIANA, Fort Wayne . . . . . . . . (219)436-5818

INDIANA, Indianapolis . . . . . . . . (317)571-0400

INDIANA, Kokomo . . . . . . . . . . . (317)457-6634

IOWA, Cedar Rapids . . . . . . . . . . (319)373-1328

KANSAS, Kansas City/Mission . (913)451-8555

MARYLAND, Columbia . . . . . . . (410)381-1570

MASSACHUSETTS, Marlborough (508)481-8100

MASSACHUSETTS, Woburn . . (617)932-9700

MICHIGAN, Detroit . . . . . . . . . . . (313)347-6800

MINNESOTA, Minnetonka . . . . . (612)932-1500

MISSOURI, St. Louis . . . . . . . . . (314)275-7380

NEW JERSEY, Fairfield . . . . . . . (201)808-2400

NEW YORK, Fairport . . . . . . . . . (716)425-4000

NEW YORK, Hauppauge . . . . . . (516)361-7000

NEW YORK, Poughkeepsie/

Fishkill . . . . . . . . . . . . . . . . . . . . . (914)896-0511

NORTH CAROLINA, Raleigh . . (919)870-4355

OHIO, Cleveland . . . . . . . . . . . . . (216)349-3100

OHIO, Columbus/Worthington . . (614)431-8492

OHIO, Dayton . . . . . . . . . . . . . . . . (513)495-6800

OKLAHOMA, Tulsa . . . . . . . . . . (800)544-9496

OREGON, Portland . . . . . . . . . . . (503)641-3681

PENNSYLVANIA, Colmar . . . . . (215)997-1020

Philadelphia/Horsham . . . . . . . (215)957-4100

TENNESSEE, Knoxville . . . . . . . (615)690-5593

FULL LINE REPRESENTATIVES

CALIFORNIA, Loomis

Galena Technology Group . . . (916)652-0268

COLORADO, Grand Junction

Cheryl Lee Whitely . . . . . . . . . . (303)243-9658

KANSAS, Wichita

Melinda Shores/Kelly Greiving

. (316)838-0190

NEVADA, Reno

Galena Technology Group . . . (702)746-0642

NEW MEXICO, Albuquerque

S&S Technologies, Inc. . . . . . . (505)298-7177

UTAH, Salt Lake City

Utah Component Sales, inc. . . (801)561-5099

WASHINGTON, Spokane

Doug Kenley . . . . . . . . . . . . . . . (509)924-2322

ARGENTINA, Buenos Aires

Argonics, S.A. . . . . . . . . . . . . . . (541)343-1787

HYBRID/MCM COMPONENT

SUPPLIERS

Chip Supply . . . . . . . . . . . . . . . . . (407)298-7100

Elmo Semiconductor . . . . . . . . . . (818)768-7400

Minco Technology Labs Inc. . . . . (512)834-2022

Semi Dice Inc. . . . . . . . . . . . . . . . (310)594-4631

This page intentionally left blank.

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding

the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and

specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola

datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”

must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of

others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other

applicationsintended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury

ordeathmayoccur. ShouldBuyerpurchaseoruseMotorolaproductsforanysuchunintendedorunauthorizedapplication,BuyershallindemnifyandholdMotorola

and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees

arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that

Motorola was negligent regarding the design or manufacture of the part. Motorola and

Opportunity/Affirmative Action Employer.

are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal

Mfax is a trademark of Motorola, Inc.

How to reach us:

USA/EUROPE/Locations Not Listed: Motorola Literature Distribution;

P.O. Box 5405, Denver, Colorado 80217. 1–303–675–2140 or 1–800–441–2447

JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 141,

4–32–1 Nishi–Gotanda, Shagawa–ku, Tokyo, Japan. 03–5487–8488

Mfax : RMFAX0@email.sps.mot.com – TOUCHTONE 1–602–244–6609

ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,

Motorola Fax Back System

– US & Canada ONLY 1–800–774–1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298

– http://sps.motorola.com/mfax/

HOME PAGE: http://motorola.com/sps/

CUSTOMER FOCUS CENTER: 1–800–521–6274

MC145540/D


型号：	MC145540P
厂家：	MOTOROLA
描述：	ADPCM Codec, A/MU-Law, 1-Func, CMOS, PDIP28, PLASTIC, DIP-28 PC 电信光电二极管电信集成电路
文件：	总116页 (文件大小：891K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MC145540P [MOTOROLA]

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