Z0220516SSCR4292TR_技术文档

Z02205

MODEM CONTROLLER IDEAL FOR LOW POWER

CONSUMPTION, SMALL SIZE REQUIREMENTS

PRODUCT SPECIFICATION

PS001000-MOD0599

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tions, or technology described is intended to suggest possible uses and may be superseded. ZiLOG, INC.

DOES NOT ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF ACCURACY OF

THE INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED IN THIS DOCUMENT. ZiLOG

ALSO DOES NOT ASSUME LIABILITY FOR INTELLECTUAL PROPERTY INFRINGEMENT

RELATED IN ANY MANNER TO USE OF INFORMATION, DEVICES, OR TECHNOLOGY

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information, devices, or technology as critical components of life support systems is not authorized. No

licenses are conveyed, implicitly or otherwise, by this document under any intellectual property rights.

ii

Z02205

PS001000-MOD0599

PRODUCT SPECIFICATION

Z02205

1

MODEM CONTROLLER IDEAL FOR LOW POWER

CONSUMPTION, SMALL SIZE REQUIREMENTS

FEATURES

Auto-Dial and Auto-Answer

ROM

(KB)

RAM*

(Bytes)

Speed

(MHz)

Device

Glueless interface to Z02201 modem data pump

Z02205

16

237

16

Watch-Dog Timer (WDT)/Power-On Reset (POR)

Includes AT command set interpreter in on-chip ROM—

Type-I Caller ID

no external memory required

Dynamic power management

CMOS design for low power consumption

0°C to +70°C commercial temperature range

28-pin DIP, SOIC package

Supports Tone dial or Pulse dial

Call progress monitoring controls

Handshake controls

Guard Tone controls

Line quality monitoring and Auto-Retrain

4.5V to 5.5V operating range

GENERAL DESCRIPTION

The Z02205 V.22bis Modem Controller serves as the mo- Call progress monitoring

dem controller in embedded V.22bis modem applications.

A complete modem can be made by adding ZiLOG data

pump (Z02201), phone line interface, and the required DTE

interface. The Z02205 has been designed for low-cost use

and includes a glueless interface to the ZiLOG data pumps.

The Z02205 is ideal for applications where small size and

low power consumption are requirements.

Handshake negotiation

Dial controls—pulse or tone

S-registers

Auto-answer and auto-dial

The Z02205 operates over dial-up telephone connections,

provides auto-dial and ring detect, and operates in either

SYNC or ASYNC modes.

Guard tones

On-hook and off-hook

The Z02205 includes AT command and modem control

Auto-retrain

firmware in on-chip ROM. It also includes enhanced wake-

up circuitry, programmable Watch-Dog Timers(WDT), and

low-noise/EMI options.

Standard Z02205 sample devices and demonstration boards

contain controller code tailored for operation on the North

American phone network. For production usage, customers

must modify the controller code to meet the requirements

of their particular country and application.

AT commands stored on-chip in ROM provide control over

the following modem controller functions:

PS001000-MOD0599

1

Z02205

Modem Controller

ZiLOG

Power connections follow conventional descriptions be-

low:

Note: All signals with an overline, are active Low. For exam-

ple, B/W, in which WORD is active Low; and B/W, in

which BYTE is active Low.

Connection

Power

Circuit

V_CC

Device

V_DD

Ground

GND

V_SS

Parallel

Z02201

Line

Interface

Data

Access

Arrangement

Telephone

Line

or

Z02205

Controller

DTE

Z02922

Serial

Data Pump

Speaker

Optional

Eye Pattern

Interface

Oscilloscope

Optional

Figure 1. Functional Block Diagram

D4

D3

1

D5

D6

28

D2

D7

D1

D0

DPRD

DPWR

DPCS

GND

A2

DPRESET

MUTE

Z02205

V_CC

A1

A0

RxD

OH

TxD

SHUNT

XTAL2

XTAL1

DPIRQ

RINGDET

DTR

14

15

DCD

Figure 2. Z02205 Pin Diagram (SOIC/ DIP)

2

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

PIN DESCRIPTION

Table 1. Z02205 Pin Identification

Function

Pin #

Symbol

Direction

1–3

4

D5–D7

DPRD

DPWR

DPRESET

MUTE

V_CC

DSP Register Data Lines 5 through 7

Data Pump Read

In/Output

Output

5

Data Pump Write

6

Data Pump Reset

7

Speaker Mute

8

Power Supply

9

XTAL2

XTAL1

DPIRQ

RINGDET

DTR

Crystal Oscillator

Output

Input

10

Crystal Oscillator

11

Data Pump Interrupt Request

Ring Detect Input

Input

12

Input

13

Data Terminal Ready

Data Carrier Detect

Input

14

DCD

Output

Input

15

SHUNT

TxD

Pulse Dial Shunt Relay Output

Data Transmit

16

17

OH

Off Hook Relay Output

Data Receive

18

RxD

19–21

22

A0–A2

GND

DSP Register Address Lines 0 through 2

Ground

Output

23

DPCS

D0–D4

Data Pump Chip Select

DSP Register Data Lines 0 through 4

Output

24–28

In/Output

PS001000-MOD0599

3

Z02205

Modem Controller

ZiLOG

ABSOLUTE MAXIMUM RATINGS

Parameter

Min

Max

Units

Notes

Ambient Temperature under Bias

Storage Temperature

0

+70

+150

+7

C

V

–65

–0.6

Voltage on any Pin with Respect to V_SS

1

2

Voltage on V_DDPin with Respect to V_SS

–0.3

–0.6

+7

V

Voltage on XTAL1 and RESET Pins with Respect to V_SS

V_DD+1

Total Power Dissipation

1.21

220

W

Maximum Allowable Current out of V_SS

mA

Maximum Allowable Current into V_DD

180

mA

Maximum Allowable Current into an Input Pin

–600

+600

25

µA

3

4

Maximum Allowable Current into an Open-Drain Pin

Maximum Allowable Output Current Sinked by Any I/O Pin

Maximum Allowable Output Current Sourced by Any I/O Pin

mA

25

Notes:

1. This applies to all pins except XTAL pins and where otherwise noted.

2. There is no input protection diode from pin to V_DDand current into pin is limited to ±600 µA.

3. This excludes XTAL pins.

4. Device pin is not at an output Low state.

Stresses greater than those listed under “Absolute Maxi-

mum Ratings” may cause permanent damage to the device.

This rating is a stress rating only. Functional operation of

the device at any condition above those indicated in the op-

erational sections of these specifications is not implied. Ex-

posure to absolute maximum rating conditions for an ex-

tended period may affect device reliability.

Total power dissipation should not exceed 1.21 W for the

package. Power dissipation is calculated as follows:

Total Power Dissipation =

V_DDx [ I_DD– (sum of I_OH) ] = + sum of [ (V_DD– V_OH) x I_OH] + sum of (V_0Lx I_0L

)

4

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

STANDARD TEST CONDITIONS

The characteristics listed below apply for standard test con-

ditions as noted. All voltages are referenced to GND. Pos-

itive current flows into the referenced pin (Figure 3).

From Output

Under Test

I

150 pF

Figure 3. Test Load Diagram

CAPACITANCE

T_A= 25°C, V_CC= GND = 0V, f = 1.0 MHz, Unmeasured pins to GND

Parameter

Min

Max

Input capacitance

Output capacitance

I/O capacitance

0

12 pF

DC ELECTRICAL CHARACTERISTICS

V_CC

T_A= 0° C to +70°C

Typical [1]

Sym

Parameter

Note [3]

Min

Max

@ 25°C

Units

Conditions

Driven by

External Clock

Generator

Notes

V_CH

Clock Input High

Voltage

5.5V

0.7 V_CC

V_CC+0.3

2.6

V

V_CL

V_IH

Clock Input Low

Voltage

5.5V

GND–0.3

0.7 V_CC

0.2 V_CC

V_CC+0.3

0.2 V_CC

2.1

2.6

1.6

4.8

0.1

0.4

10

V

Driven by External

Clock Generator

Input High

Voltage

V_IL

Input Low

Voltage

GND–0.3

V_CC–0.4

V

V_OH1

V_OL1

V_OL2

Output High

Voltage

V

I_OH= –2.0 mA

I_OL= +4.0 mA

I_OL= +12 mA

8

Output Low

Voltage

0.4

1.2

25

V

8

Output Low

Voltage

V

8

V_OFFSETComparator

Input Offset

mV

10

Voltage

I_IL

Input Leakage

5.5V

–1

2

1

0.004

µA V_IN= 0V, V_CC

I_OL

Output Leakage

5.5V

PS001000-MOD0599

5

Z02205

Modem Controller

ZiLOG

V_CC

T_A= 0° C to +70°C

Typical [1]

@ 25°C

Sym

Parameter

Note [3]

Min

Max

Units

Conditions

Notes

IIR

Reset Input

Current

5.5V

–20

–180

–85

µA

I_CC

Supply Current

5.5V

25

8

20

mA @ 16 MHz

4

I_CC1

Standby Current

(HALT Mode)

3.7

mA V_IN= 0V, V_CC

4

@ 16 MHz

I_CC2

Standby Current

(STOP Mode)

5.5V

10

800

4

µA V_IN= 0V, V_CCWDT is 6,11

not Running

600

µA V_IN= 0V, V_CCWDT is 6,11,

13

Running

V_ICR

Input Common

Mode

0

V_CC–1.0V

V

10

Voltage Range

I_ALL

I_ALH

V_LV

Auto Latch Low

Current

5.5V

1.4

15

–8

5

µA 0V < V_IN< V_CC

9

Auto Latch High

Current

–1.0

–6

V_CCLow

2.8

4.8

V

4 MHz max Int. CLK

Freq.

7

Voltage

Protection

Voltage

2.2

3.1

6 MHz max Int. CLK

Freq.

7,13

V_OH

Output High

Voltage

5.0V

V

_CC–0.4

V

I_OH= –0.5 mA

(Low EMI

Mode)

V_OL

Output Low

Voltage

5.0V

0.4

0.1

V

I_OL= 1.0 mA

(Low EMI

Mode)

Notes:

1. Typicals at V_CC= 5.0V.

2. GND = 0V.

3. The V_DDvoltage specification of 5.5V guarantees 5.0V ±0.5V with typicals at V_CC–5.0V.

4. All outputs unloaded, I/O pins floating, inputs at rail.

5. CL1 = CL2 = 10 pF.

6. Same as note [4] except inputs at V_CC

.

7. The V_LVvoltage increases as the temperature decreases and will overlap lower V_CCoperating region.

8. Standard Mode (not Low EMI).

9. Auto Latch (Mask Option) selected.

10. For analog comparator, inputs when analog comparators are enabled.

11. Clock must be forced Low, when XTAL1 is clock-driven and XTAL2 is floating.

12. Excludes clock pins.

13. 0°C to 70°C (standard temperature).

6

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

AC ELECTRICAL CHARACTERISTICS

Additional Timing Diagram

3

1

Clock

2

3

7

TIN

4

5

6

IRQN

8

9

Clock

Setup

11

Stop

Mode

Recovery

Source

10

Figure 4. Additional Timing

PS001000-MOD0599

7

Z02205

Modem Controller

ZiLOG

Additional Timing Table (SCLK/TCLK = XTAL/2)

T_A= 0°C to +70°C

Note

[3]

16 MHz

V_CC

No

Symbol

Parameter

Min

Max

Units

Notes

1

TpC

Input Clock Period

5.5V

62.5

250

DC

15

ns

1,7

1,8

1

2

3

TrC,TfC

TwC

Clock Input Rise & Fall Times

Input Clock Width

31

125

1

1,8

1

4

TwTinL

TwTinH

TpTin

Timer Input Low Width

Timer Input High Width

Timer Input Period

70

5

5TpC

8TpC

1

6

1

7

TrTin, TfTin

TwIL

Timer Input Rise & Fall Timer

Int. Request Low Time

100

ns

1

8A

8B

9

70

5TpC

12

1,2

1,3

1,2

TwIL

Int. Request Low Time

TwIH

Int. Request Input High Time

Stop-Mode Recovery Width Spec

Oscillator Startup Time

10

11

Twsm

ns

Tost

5TpC

4

D1, D0

[Note]

12

Twdt

Watch-Dog Timer Delay Time

before time-out

5.5V

3.5

7

ms

0, 0 [5]

0, 1 [5]

1, 0 [5]

1, 1 [5]

14

56

1.5

13

T_POR

Power-On Reset Delay

13

Notes::

1. Timing Reference uses 0.7 V_CCfor a logic 1 and 0.2 V_CCfor a logic 0.

2. Interrupt request via Port 3 (P31–P33).

3. Interrupt request via Port 3 (P30).

4. SMR–D5 = 0.

5. Reg. WDTMR.

6. The V_DDvoltage specification of 5.5V guarantees 5.0V ± 0.5V.

7. Standard Oscillator mode, Pcon RegD7=1.

8. Maximum frequency for external XTAL Clock is 4MHz when using low EMI oscillator mode, Pcon Reg D7=0.

8

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

PIN FUNCTIONS

XTAL1 Crystal 1 (Time-based Input).

XTAL2 Crystal 2 (Time-based Output).

DPWR Data Pump Write (Output).

DPRESET Data Pump Reset (Output).

DPIRQ Data Pump Interrupt Request (Input).

DPCS Data Pump Chip Select (Output).

DTR Data Terminal Ready (Input).

DCD Data Carrier Detect (Output).

MUTE Speaker Mute Control (Output).

DPRD Data Pump Read (Output).

D0–D7 DSP Register Data Lines (Input/Output).

A0–A2 DSP Register Address Lines (Output).

TxD Transmit Data (Output).

RxD Read Data (Input).

OH Off Hook Relay Output (Output).

SHUNT Pulse Dial Shunt Relay Output (Output).

RINGDET Ring Detect Input (Input).

PS001000-MOD0599

9

Z02205

Modem Controller

ZiLOG

AT COMMAND SET

Command lines are typed to the modem from the terminal

when the modem is in the Idle or Command state. The mo-

dem does not execute any commands from a command line

until the command line is ended by the end of line character

<CR>. A command line is astring of characters starting with

A and T characters and ending with a special end-of-line

character, <CR>. Characters typed before the AT are ig-

nored. Command lines contain no more than 40 characters

after the AT (not counting spaces). The modem does not ex-

ecute any commands in a command line that is too long.

When the modem has executed a command line, the result

code of the last command executed is returned to the ter-

minal.

If the value to be written to a modem S-register is outside

the range of values accepted by the S-register, then its value

is set to the nearest allowed value.

Leading zeros in numeric arguments, including S-register

numbers, are ignored. For example, ATS1 is 2 and ATS01

is 2 both set S-register S1 to 2.

To Echo command line characters, use the E1 command.

All numeric arguments, including S-register numbers, are

decimal.

Typing mistakes can be aborted by using a special Back-

Space character, <BS>, after the initial A and T characters

are entered.

AT Command Prefix

A partial command line can be aborted by typing a Ctrl-X

character. The modem returns an OK result code and ig-

nores the partial AT command line.

Each modem command line begins with the letters A and

T. The modem uses these characters to determine the data

rate and parity of data from the terminal.

Command lines may contain several commands one after

another. The ANSWER (A), DIAL (D), and GO ON-LINE (O)

commands cause any subsequent commands in the com-

mand line to be ignored.

A/ Repeat Last Command

To repeat the commands in the last command line, type the

letters A and / instead of A and T.

Command Line Execution

<CR>End Of Line Character

Thecharactersinacommandlineexecuteoneat atime. Any

unexpected characters, except control characters, stop com-

mand line execution and return an ERROR result code. Un-

expected characters include numbers outside the range of

values accepted by the command. All control characters in

a command line except Ctrl-X and the special characters

such as <CR> and <BS> are ignored.

This character is typed to end a command line. The value

of the <CR> character is stored in S-register S3. The default

is 13, the ASCII carriage return character.

When the <CR> character is entered, the modem executes

the commands in the command line.

The numerical argument of a command is assumed to be 0

if not provided. For example, the commands ATH<CR> and

ATH0<CR> both hang up the telephone line.

Note: Default values in Table 2 are denoted by bold.

.

10

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

Table 2. AT Command Set

Function and Description

Command

A

Answer

The A command causes the modem go off-hook and respond to an incoming call. Uses

this command after the modem has returned the RING result code.

When modems successfully complete the answering process, they each return a

CONNECT result code and enter the On-Line state.

If no transmit carrier signal is received from the calling modem within the time specified

in S-register S7, the modem hangs up, returns the NO CARRIER result code, and enters

the Idle state.

Any commands following the answer command on the command line are ignored.

This command is aborted if a key is pressed before the answer process is completed, or

when DTR is off, if some options in the &Q or &D commands have been used.

B

Communication Standard The B command indicates to the modem which special telephone line modulation

Option

standards to use. The modem can be configured to use:

B0

Uses the ITU-T modulation standards for all telephone line data rates. This

includes V.22 for the 1200 bps telephone line data rate and V.21 for the 300

bps telephone line data rate. If S-register S37 is set to 1 (or 2), then V.23 is

used with the originating modem transmitting at 75 bps and receiving at

1200 bps. If S-register S37 is set to any other value, V.23 is not used.

B1

If the 1200 bps telephone line data rate is required, Bell 212A is used

instead of V.22. This is the default value for North America. The 1200 bps

telephone line data rate is required only if:

•

S-register S37 is set to 5, or

• S-register S37 is set to 0, and the terminal data rate is 1200 bps.

If the 300 bps telephone line data rate is required, Bell 103 is used instead

of V.21. The 300 bps telephone line data rate is required only if:

•

S-register S37 is set to 3, or

•

S-register S37 is set to 0 and the terminal data rate is 300 bps.

If neither the 1200 bps nor 300 bps telephone line data rate are required,

then a setting of B1 is ignored and the modem responds as if B0 was set.

B2

B3

Same as B0 for the 1200 bps and 300 bps telephone line date rate. Uses

V.23 with the originating modem transmitting at 1200 bps and receiving at

75 bps, if S-register S37 is set to 1 or 2.

Same as B0 for the 1200 bps and 300 bps telephone line date rate. Uses

V.23 with the originating modem transmitting at 75 bps and receiving at

1200 bps, if S-register S37 is set to 1 or 2.

&C

Data Carrier Detect

Options

&C determines how the modem’s DCD signal relates to the carrier signal from the other

modem. This option occurs only at the beginning of a telephone line connection. If &C is

issued from the Command state, it will not have an immediate effect.

&C0

During asynchronous operation (&Q0 in effect), DCD is on at all times.

During synchronous operation (&Q1), DCD indicates the state of the

carrier signal from the other modem using S-registers S9 and S10. This is

the default value in North America.

&C1

Indicates the state of the carrier signal from the other modem using S-

registers S9 and S10.

PS001000-MOD0599

11

Z02205

Modem Controller

ZiLOG

Table 2. AT Command Set (Continued)

Function and Description

Command

D

Dial

The D command causes the modem to dial a telephone call according to the digits and

dial modifiers in the dial string following the command. Any commands following the

dial string on a command line are ignored, unless the semicolon dial modifier is the last

character in the dial string. If the modem is off-hook when the Dial command is given,

the modem dials immediately without trying to detect a dial tone. Characters other than

digits and dial modifiers in a dial string are ignored; however, they are counted as

characters in the command line buffer.

If line current sensing is enabled, and line current is detected before the modem is taken

OFF-HOOK when the modem dials, a NO CARRIER result code is displayed and the

modem enters the IDLE state. If the modem needs not dial (that is, ATD with no dial

string), the modem assumes the call was manually established and attempts to make a

connection.

The D command is not valid when the modem is in the On-Line state.

See “Dial Modifiers and “Modem Result Codes for more information.

&D

Data Terminal Ready

Options

&D determines how the modem responds to the DTR signal from the terminal. The

country configuration may prevent the modem from detecting terminal DTR. In this

case, the modem assumes DTR is always on. In North America, terminal DTR is

normally detected. If DTR detection has been prevented, the modem will respond with

an ERROR result to this command.

The response to changes in DTR also depends on the &Q and &D commands. This table

defines what happens when DTR goes off for all possible combinations of the &D and

&Q commands. To see what happens when DTR goes on, refer to the &Q command. The

default value is &D0 in North America:

&D0

None

A

&D1

B

&D2

C

&D3

D

&Q0

&Q1

A

B

C

D

The modem hangs up the telephone line and issues an OK result code.

B

If in the On-Line state, the modem goes into the Command state, and issues

an OK result code.

C

D

The modem hangs up the telephone line and issues an OK result code.

Auto-Answer is disabled as long as DTR stays off.

The modem resets.

12

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

Table 2. AT Command Set (Continued)

Function and Description

Command

E

Command Mode

Character Echo

E tells the modem to echo or not echo characters sent from the terminal while the modem

is accepting AT commands.

E0

E1

Does not echo characters sent from the terminal.

Echo characters sent from the terminal. This is the default value in North

America.

%E

&F

Automatic Retrain

Options

The %E command controls whether the modem will initiate retrain with the other

modem during a telephone line connection during operation in data modes supporting

retrain. The modem always responds to a retrain operation initiated by the remote

modem. The modem can be forced to initiate a retrain by the On-Line (O1) command.

%E0

%E1

Do not initiate a retrain.

Initiate a retrain if the datapump indicates that one is required.

Recall Factory Profile

&F changes these AT command options and S-registers to default

values. The default values may be changed for use in different countries. The values for

North America are:

S-registers

S0=0

S1=0

S2=43

S8=2

S3=13

S9=6

S4=10

S5=8

S6=2

S7=30

S17=10

S10=14

S29=25

S11=95

S37=0

S12=50

Commands

S25=5

S28=0

B1 E1 M1

P

Q0 V1 X4 &C0 &D0 &G0 &P0 &Q0 %E1

&G

H

Guard Tone Options

&G indicates the modem which guard tone to transmit when the modem is transmitting

the high band (that is, answer handshake and answer mode).

&G0

&G1

&G2

H0

No guard tone. This is the default value in North America.

550-Hz guard tone (V.22 and V.22bis only)

1800-Hz guard tone (V.22 and V.22bis only)

Hangs up the telephone line.

Hook

H1

Goes off hook without answering a telephone call. This may be disabled in

countries prohibiting its use.

PS001000-MOD0599

13

Z02205

Modem Controller

ZiLOG

Table 2. AT Command Set (Continued)

Function and Description

Command

&HT

PTT Test Command

The &HT command causes the modem to transmit tones for PTT testing. The test tone is

generated until a character is typed on the modem’s terminal. The country configuration

may disable this command. The modem returns an

is issued.

ERROR result if this command

&HT0-9

&HT10

&HT11

&HT12

&HT13

&HT14

&HT15

&HT16

&HT17

&HT18

&HT19

&HT20

&HT21

&HT22

&HT23

&HT24

&HT25

&HT26

&HT27

&HT28

&HT29

&HT30

&HT31

&HT32

&HT33

&HT34

&HT35

DTMF tone for digit n where the command was &HTn.

DTMF tone"*"

DTMF tone "#"

DTMF tone "A"

DTMF tone "B"

DTMF tone "C"

DTMF tone "D"

V.21 channel 1 mark

V.21 channel 2 marks

V.23 1200bps marks

V.23 75bps marks

V.21 channel 1 spaces

V.21 channel 2 spaces

V.23 1200bps spaces

V.23 75bps spaces

V.22 originate mode

V.22 answer mode

V.22bis originate mode

V.22bis answer mode

V.25 calling tone

550Hz guard tone

1800Hz guard tone

Silence

Detect 2100 Hz answer tone

Detect all supported answer tones simultaneously

Detect dial tone

Detect call progress tones

I

Identification

The I command queries the modem for information that can be used to determine the

modem’s compatibility with other software and to ensure the modem is operating

properly.

I0

I1

I2

I3

I4

Displays product code. The modem reports its product code to the terminal.

The modem produces information text dependent upon its features and

capabilities.

Displays ROM checksum. The modem reports the value of its ROM

checksum. The decimal number displayed is the eight bit sum (from 0 to

255) of all the bytes in ROM.

Tests the ROM checksum. The modem checks its ROM to ensure it is

correct. The modem reports a result code indicating whether the ROM is

OK or in ERROR.

Displays Software Versions. The modem reports the modem controller and

data pump software versions, and the modem controller software release

date, to the terminal.

Displays Modem Identification. The modem reports a configured

identification message to the terminal.

14

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

Table 2. AT Command Set (Continued)

Function and Description

Command

M

Speaker On/Off Options The country configuration may disable the speaker. If so, this command returns an

ERROR result.

M0

M1

Speaker always off.

Speaker on until carrier detected. This is the default value in North

America.

M2

M3

Speaker always on; stays on after carrier is detected.

Speaker off as digits are dialled, but on during ringback and on until carrier

signal is detected.

O

Return to On-Line

Mode

This command returns the modem to the on-line mode. It is frequently used after the

escape character sequence (+++) to resume communication with the remote modem. If

handshaking is started, the modem uses Originate or Answer mode handshaking,

depending upon whether the modem originated or answered the telephone call.

O0

Returns the modem to the On-Line state from the Command state during a

telephone line connection. The modem starts handshaking if no telephone

line connection and the modem was off hook.

O1

Returns the modem to the On-Line state and retrain its data pump during a

telephone line connection. The modem starts handshaking if there was no

telephone line connection is detected but the modem was OFF-HOOK.

&P

Pulse Dial Make/Break

Ratios

Sets cadence of pulse dial. The country configuration may disable this command,

forcing particular pulse dialing parameters. In this event, the modem returns an ERROR

result if this command is issued.

&P0

39%/61% make/break ratio and 10 pulses per second when pulse dialing.

This is the default value.

&P1

&P2

&P3

33%/67% make/break ratio and 10 pulses per second when pulse dialing.

39%/61% make/break ratio and 20 pulses per second when pulse dialing.

33%/67% make/break ratio and 20 pulses per second when pulse dialing.

Q

Result Code Display

Options

This command allows the user to either display result codes or to not display result

codes.

Q0

Q1

Result codes are displayed. This is the default value for North America.

Result codes are not displayed.

&Q

Communications Mode The &Q command selects the terminal communication mode.

Options

&Q0

Asynchronous. The modem handshakes as the originator if S-register S0

is 0, and as the answerer if S0 is 1. This is the default value for North

America.

&Q1

Synchronous. Hangs up if DTR goes from on to off after the time in S-

register S25 after the CONNECT result code has been sent to the terminal.

Sn

Set the current S-register This command sets the current S-register to the value n selected by the user. For

to n

example, ATS7 will set the current S-register to S7. Default value is 0. Sn addresses a

particular S-register number so future commands like? and = will read of write the S-

register. Modem reset and the &F command select S0 as the default S-register.

?

Read an S-Register

Write an S-register

This command displays the value of the last S-register named in the Sn command.

=x

This command writes the value x to the last S-register named in the Sn command. The

range of valid values for x depends upon which S-register is being written. 0 is assumed

if no value is given for x.

T

Tone dialing

Selects the tone method of dialing.

V

Result Code Format

This command changes the result code display format

V0

V1

All result codes are displayed as numbers.

All result codes are displayed as words (verbose form). This is the default

value for North America.

PS001000-MOD0599

15

Z02205

Modem Controller

ZiLOG

Table 2. AT Command Set (Continued)

Function and Description

Command

X

Call Progress

The X command controls whether or not a busy signal or dial tone is detected when

dialing. The X command also limits the result codes the modem returns when dialing.

The operation of the X command is configurable for operation in different countries.

X0

Neither busy signal nor dial tone are detected. When a telephone line

connection is made, the result code does not indicate the telephone line data

rate.

X1

X2

X3

X4

Neither busy signal nor dial tone are detected. When a telephone line

connection is made, the result code indicates the telephone line data rate.

Busy signal is not detected. Dial tone is detected. When a telephone line

connection is made, the result code indicates the telephone line data rate.

Busy signal is detected. Dial tone is not detected. When a telephone line

connection is made, the result code indicates the telephone line data rate.

Both busy signal and dial tone are detected. When a telephone line

connection is made, the result code indicates the telephone line data rate.

This is the default value in North America.

The @ and W dial modifiers are not affected by the X command. The @ dial modifier

may return the result codes 8 (NO ANSWER) or 7 (BUSY) each time it appears in the

dial string. The W dial modifier may return the result codes 6 (NO DIALTONE) or 7

(BUSY) each time it appears in the dial string.

#CID= Caller Id Options

The #CID= command controls how the modem displays

North American caller identification information. The #CID=

command is valid only if the Modem Controller software has

been compiled to support Caller ID. If the software has not

been compiled to support Caller ID then the modem responds

with an ERROR result code to a #CID= command.

Caller Id information is displayed only when it is provided by

the telephone company, and only when the terminal data rate

is 2400 bps. Lower data rates are too slow to display the

Caller Id information.

#CID=0

Do not display caller identification information.

This is the default value.

#CID=1

#CID=2

#CID=?

Display the information in as formatted data.

Display the information as unformatted data.

Display the current setting of the #CID=

command option.

16

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

DIAL MODIFIERS

Dial modifiers perform special functions within a dial com-

mand.

The example instructs the modem to use tone dialing (T),

to access a number outside a PBX (9), to wait for dial tone

(W), to dial the number 1552368, to do a hook-flash (i.e.

timed break recall), to wait for quiet answer, and to issue

the PBX transfer code #7 before dialing extension number

1234, then to return to the Command state before initiating

the handshake.

Example: ATDT9W1552368!@#71234;<CR>

Table 3. Dial Modifiers

Modifier

Function

0–9 A B C D # *

Dialing digits and characters. The digits and characters 0-9 A B C D # * specify what numbers the modem

dials. The characters A B C D # * work only when tone dialing is used. The characters are ignored when

pulse dialing is used. The characters A, B, C, and D may be disabled in countries prohibiting their use.

P

Pulse dialing. P selects the pulse method of dialing. P can be issued within a dial command or as a separate

command. The default method of dialing is Pulse.

R

T

W

,

Originates a Call in Answer Mode. R makes the modem handshake in answer mode so it can originate a call

to an originate-only modem.

Tone dialing. T selects the tone method of dialing. T can be issued within a dial command or as a separate

command. The default method of dialing is Pulse.

Waits for dial tone. W makes the modem wait for a dial tone before proceeding. If no dial tone is detected the

modem hangs up the telephone line and returns the NO DIALTONE result code.

Delays Processing of Next Character. A comma (,) makes the modem pause for the length of time in S-

register S8 before processing the next character in a dial string.

@

Waits for Quiet Answer. @ makes the modem listen for 5 seconds of silence before continuing. The modem

will wait up to the length of time in S-register S7. If 5 seconds (configurable by country) of silence are not

detected within the time period in S-register S7, the modem hangs up and returns the NO ANSWER result

code. If 5 seconds of silence are detected, the modem continues processing the other characters in the dial

string.

!

;

Timed Break Recall (Hookflash). A ! makes the modem hang up the telephone line for the length of time in

S-register S29, then take the telephone line off hook again. This is frequently used to access a PBX’s call

transfer function.

Returns to Command State after dialing. A semicolon (;) tells the modem to return to command state after

dialing without breaking the telephone line connection and without handshaking with the other modem. The

semicolon may only be used when calling a voice mail system that permits tones to transmit numbers when a

connection has been established.

PS001000-MOD0599

17

Z02205

Modem Controller

ZiLOG

MODEM S-REGISTERS

The value of an S-register is modified by ATSn = x, where

n is the register number and x is the value to be stored in

that particular register. Each S-register has three values that

may be configured for different countries: a default value,

an upper limit, and a lower limit. The values shown in this

manual are for North America.

Table 4. Modem S-Registers

Register Range

Units

Description

S0

0–255

Rings

Sets number of rings to auto-answer. The country configuration may disable the modem’s

ability to detect a telephone line ring signal. In this case, the modem will never

automatically answer the telephone regardless of the S0 setting. Default = 0 (auto-answer

disabled)

S1

S2

0–255

Rings

Returns the number of times the phone rings. Default = 0

ASCII

Sets Escape Sequence Character. Setting S2 to a value greater than 127 disables the

character escape sequence, preventing the modem from returning to Command state

when in the On-Line state. Default = 43

S3

S4

S5

S6

S7

S8

S9

S10

0–127

2–255

1–255

0–255

1–255

ASCII

Sets the End of Line character. Default = 13

ASCII

Sets the Line Feed Character. Default = 10

ASCII

Sets the BackSpace Character. Default = 8

Seconds

1/10th sec

Delays to Wait Before Performing a Blind Dial. Default = 2 seconds

Delays to Wait for Carrier after dialing. Default = 30 seconds

Delays to Wait when a Comma Dial Modifier is Processed. Default = 2 sec.

Time Carrier Must be Present Before Being Recognized. Default = 0.6 sec.

Delay Between Lost Carrier and Hang Up. Setting S-register S10 to 255 prevents the

modem hanging up the telephone line because of a loss of carrier. Default = 14 tenths of a

second

S11

S12

50–255

0–255

msec

Multi-Frequency Tone duration. Default = 95 milliseconds

1/50th sec

Escapes Prompt delay time. This is the prompt delay time for escape sequences from the

On-Line state to the Command state. Default = 50 fiftieths of a second

S13

S14

S15

S16

S17

S18

S19

S20

Reserved

–6 to –43

Reserved

–dBm

Reserved

Sets Transmit level. Default = –10 dBm

Reserved

18

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

Table 4. Modem S-Registers (Continued)

Description

Register Range

Units

S21

S22

S23

S24

S25

Reserved

seconds

Reserved

0–255

During synchronous operation with the &Q1 command in effect, S-register S25 indicates

or 1/100 sec. the number of seconds after a telephone line connection is made before the modem

examines DTR. This register allows sufficient time to disconnect the modem from an

asynchronous terminal and attach it to a synchronous terminal. In the On-Line or

Command state during any mode of operation, changes in DTR for less than S25

hundredths of a second are ignored.

S26

S27

S28

Reserved

0–255

Reserved

minutes

Reserved

Terminal inactivity timeout. Hangs up the modem after S28 minutes if no characters are

received from the modem’s terminal. Default = 0

S29

S37

0–255

0–6

1/50th sec

code

Hook Flash On-Hook time. The amount of time in 20 millisecond units the modem will

leave the telephone on-hook while performing a hook-flash according to the “!” dial

string modifier. Default = 25 fiftieths of a second.

Sets the Highest Line Rate. This register determines the highest telephone line data rate

the modem will use when connecting with a remote modem. See “Setting the Highest

Line Rate” section on the following page. Default = 0.

PS001000-MOD0599

19

Z02205

Modem Controller

ZiLOG

SETTING THE HIGHEST LINE RATE

The connect rate can be selected by S-register S37. The fol-

lowing connect rates are supported.

Table 5. S-Register 37 Values

S37

Value

Carrier

Data Rate

0

The data rate of the last AT

command

1

V.23

Refer to the Communication

Standard Options (B) command

for a description.

2

3

4

5

6

V.23

See immediately above.

300 bps. See the B command

Reserved

V.21, Bell 103

V.22, Bell 212A 1200 bps. See the B command

V.22bis 2400 bps

20

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

MODEM RESULT CODES

A result code is a line of text or a number the modem sends

to the terminal indicating the result of a command execu-

tion. Some CONNECT result codes indicate the telephone

linedatarate. Thefollowingtableprovidesalistoftheavail-

able result codes.

Table 6. Modem Result Codes

Number

Word

Result Code Description

0

1

2

OK

Command Line Executed without errors

CONNECT

RING

The modem is in the on-line state, ready to transfer data.

The modem has detected a ring signal on the telephone line. The country

configuration may disable the modem’s ability to detect a telephone line ring

signal.

3

4

NO CARRIER

ERROR

Either no carrier signal was detected when answering or placing a telephone call,

or the carrier was lost during a call. The modem also returns this response

message when the telephone line connection is broken for any reason.

An invalid command was issued, or there was an error at any place in the

command line.

5

CONNECT 1200

NO DIALTONE

BUSY

The modem is in the on-line state, ready to transfer data.

6

No dial tone was detected when the modem took the telephone line off hook.

The modem detected a busy signal on the telephone line.

7

8

NO ANSWER

CONNECT 2400

Not enough silence was detected when the @ dial modifier was used.

10

The modem is in the on-line state, ready to transfer data. The telephone line data

rate is 2400bps.

16

17

20

21

CONNECT 1200/75

CONNECT 75/1200

BLACKLISTED

DELAYED

The modem is in the On-Line state, ready to transfer data. This modem transmits

at 1200 bps and receives at 75 bps.

The modem is in the On-Line state, ready to transfer data. This modem transmits

at 75 bps and receives at 1200 bps.

The modem will not allow any number to be dialed until after the modem is

reset.

The modem will not allow any number to be dialed now, but will allow dialing at

some future time.

PS001000-MOD0599

21

Z02205

Modem Controller

ZiLOG

ESCAPE SEQUENCES

An escape sequence is defined as one or more particular

characters sent from the terminal to the modem during the

On-Line state. This sequence is activated to switch the mo-

dem to the command state so modem commands may be en-

tered during a telephone line connection. The Escape Se-

quence characters are typically sent to the other modem as

data.

TIES Escape Sequence

TIES was developed by a number of modem manufacturers

in response to Hayes enforcing patent rights for their escape

sequence guard time patent.

The Time Independent Escape Sequence, is a sequence of

3 escape characters (+ characters by default). When these

characters are recognized, the modem enters the COM-

MAND state without sending a confirming result code to the

terminal. Themodemthenstartsapromptdelaytimer. From

that point:

An escape sequence should not occur accidentally during

an exchange of data between two modems. Unfortunately,

it is impossible to guarantee that any escape sequence will

never occur naturally, because there are no restrictions on

the data or timing between characters sent between two mo-

dems during the On-Line state.

If one of the recognized AT commands is received be-

fore the timer expires, the timer is stopped, the command

is executed, and its result code is sent to the terminal.

The only method of switching from the On-Line state to the

Command state that never occurs naturally during an ex-

change of data is the Data Terminal Ready signal (the &D1

command). The terminal has complete control of this signal

anditisnotpart of thedataexchangedbetweenthemodems.

If any other data is received while the timer is running,

the timer is stopped, the modem returns to the On-Line

state, and the received data is sent to the other modem.

The Hayes Escape Sequence was adopted by many modem

manufacturers and communication programs before Hayes

was granted a patent for the escape sequence guard times.

Now the unpatented TIME INDEPENDENT ESCAPE SE-

QUENCE (TIES) has gained popularity with many modem

manufacturers.

If the timer expires, a confirming result code is sent to

the terminal, indicating the modem is in the Command

state.

The escape character and prompt delay timer can be

changed by writing new values to S-registers S2 and S12.

CARRIER DETECTION

After Handshaking, the modem determines if a telephone

line connection exists by detecting the carrier signal from

the other modem. If the carrier is not detected for a long

enough period of time, the modem assumes the telephone

line connection with the other modem has been broken. The

modem uses S-register S9 to determine how long a carrier

must be present before it is detected. The modem uses S-

register S10 to determine how long a carrier is not detected

before the telephone line is hung up.

BLACKLISTING MANAGEMENT

Blacklisting applies separately to each number dialed, and

indicates the call blocking capability for specific phone

numbers. To save Z02205 RAM, calls are treated as if they

are all to the same number.

2. If the attempt occurred too quickly (within the inter-

call timing period) then the attempt is not allowed,

Modem Result Code indicates the call is DELAYED.

3. If there is a blacklisting period limiting the number of

attempts that may be made within the period, and too

many attempts have been made, then the attempt is not

allowed, Modem Result Code indicates the call is

either DELAYED (if a call may be made later), or

BLACKLISTED (if no call may be made later).

The first connection attempt after modem reset or a suc-

cessful connection is always allowed. If a connection at-

tempt is not successful, then each following connection

attempt is checked as follows:

1. If voice answer was detected too many times the

attempt is not allowed, Modem Result Code indicates

the call is BLACKLISTED.

22

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

The following blacklisting parameters can be controlled:

Minimum delay in seconds between successive dial at-

tempts after

Minimum delay in seconds between successive dial at-

Unsuccessful dial attempts

tempts

Maximum number of dial attempts permitted in a series

Number of successive dial attempts after which the fol-

of dial attempts

lowing parameter applies

Blacklisting period in minutes for each series of dial at-

tempts

DYNAMIC POWER MANAGEMENT

The Z02205 incorporates a low-power SLEEP mode. In this The RINGS register has been cleared

mode, theclockisshutdown(effectivelystoppingthepart).

There are no incoming characters

There are no characters in the input queue

The Modem Controller software automaticallyputs the mo-

dem’s data pump into a power-saving SLEEP mode when it

is not used and there is no connection. The Modem Con-

The Modem Controller is put to sleep until there is an in-

troller software also puts the Modem Controller to sleep

when possible. This power-saving feature reduces the

amount of current used by 8 mA.

terrupt, such as:

A start bit from the terminal.

Telephone line ring detection from the telephone line in-

Thissleepfeatureoperatestransparentlytothemodem’sop-

eration, saving approximately 58 mA of power when both

the modem data pump and controller are put into sleep

mode.

terface.

In SLEEP mode, the modem controller turns off the main

timer interrupt and turns on the ring detect interrupt, leaves

the start bit interrupt running - then halts until an interrupt

occurs.

The modem controller goes to sleep under following con-

ditions:

The Modem Controller cannot sleep if dial blacklisting has

been enabled in the country parameters and is being timed.

Nor can the Modem Controller sleep if AT and D3 is set be-

cause a DTR On-to-Off transition can not wake it up

Looking for an ’A’(Auto Baud)

The ring line has been debounced

FUNCTIONAL DESCRIPTION

Clock. The Z02205 on-chip oscillator has a high-gain, par-

allel-resonant amplifier for connection to a crystal (XTAL1

is Input, XTAL2 is Output). The crystal should be AT cut,

16 MHz max., with a series resistance (RS) of less than or

equal to 100 Ohms when counting from 1 MHz to 16 MHz.

Connect the crystal acrossXTAL1 andXTAL2 usingtheven-

dor’s recommended capacitor values from each pin directly

tothe deviceGROUND pintoreduce Ground noiseinjection

into the oscillator.

Note: For better noise suppression, the capacitors must be tied

directly to the device Ground pin (V_SS).

PS001000-MOD0599

23

Z02205

Modem Controller

ZiLOG

XTAL1

XTAL2

C1

**

V_SS

C2

**

V_SS

Ceramic Resonator or Crystal

C1, C2 = 22 pF TYP*

f = 8 MHz

*Preliminary value including pin parasitics

**Device ground pin

Figure 5. Oscillator Configuration

Power-On-Reset (POR). A timer circuit, clocked by a ded-

icated on-board RC oscillator, is used for the POWER-ON

RESET (POR)timerfunction.The PORtime allows V and

theoscillatorcircuittostabilizebeforeinstructionexecution

begins.

The POR timer circuit is a one-shot timer triggered by one

of four conditions:

Power fail to Power OK status.

STOP-MODE RECOVERY (if bit D5 of SMR is set to 1).

WDT time-out.

The POR time is a specified as TPOR.

24

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

8

22

GND

VCC

Figure 6. Typical Modem Using Z02205 and a Z02201 Datapump

PS001000-MOD0599

25

Z02205

Modem Controller

ZiLOG

PACKAGE INFORMATION

Figure 7. 28-pin SOIC Package Diagram

Figure 8. 28-pin DIP Package Diagram

26

PS001000-MOD0599

Z02205

Modem Controller

ZiLOG

ORDERING INFORMATION

28-Pin SOIC

Z0220516SSCR4292

Z0220516SSCR4259

Z0220516SSCR3641

Z0220516SSC1961

28-Pin DIP

Z0220516PSCR4292

Z0220516PSCR4259

Z0220516PSCR3641

Z0220516PSC1961

Codes

Package

S = Small Outline Integrated Chip (SOIC)

P = Plastic DIP

Standard

S = 0°C to +70°C

Temperature

Speed

16 = 16 MHz

Environmental C = Plastic Standard

ROM Code R4292 = ROM code number 4292 (ROM code Version 3.4)

R4259 = ROM code number 4259 (ROM code Version 3.4)

R3641 = ROM code number 3641 (ROM code Version 3.0)

1961 suffix = Blank Device; One Time Programmable (OTP)

Z02205 Compatibility Matrix for ZiLOG data pumps

ZiLOG recommends use of latest modem data pumps.

Z02201

Z02922

Code Version 0x31

ROM Code #R3470

Code Version 0x48

ROM Code #4078

Code Version 0x3A

ROM Code #R3796

Code Version 0x42

ROM Code #R3910

Z02205 Ver 3.0

Z02205 Ver 3.4

Z02205 ROM #R3641

Z02205 ROM #R4259

Z02205 ROM #R4292

Example

Z 02205dddd16 dddS Ssfsssssssss

CfghgfR4259

is a Ver. 3.4 (R4259) Z02205 compatible with Ver. 31 (R3470) of Z02201,

16 MHz, PLCC, 0°C to +70°C, Plastic Standard Flow

OTP/ ROM Code

Environmental Flow

Temperature

Package

Speed

Product Number

ZiLOG Prefix

PS001000-MOD0599

27

Z02205

Modem Controller

ZiLOG

Pre-Characterization Product:

The product represented by this product brief is newly introduced

and ZiLOG has not completed the full characterization of the prod-

uct. The CPS states what ZiLOG knows about this product at this

time, but additional featuresor non-conformance withsome aspects

of the product brief may be found, either by ZiLOG or its customers

in the course of further application and characterization work. In

addition, ZiLOG cautions that delivery may be uncertain at times,

due to start-up yield issues.

Low Margin:

Customer is advised that this product does not meet ZiLOG’s inter-

nal guardbanded test policies for the specification requested and is

supplied on an exception basis. Customer is cautioned that delivery

may be uncertain and that, in addition to all other limitations on

ZiLOGliabilitystatedonthefrontandbackoftheacknowledgment,

ZiLOG makes no claim as to quality and reliability under the prod-

uct brief. The product remains subject to standard warranty for re-

placement due to defects in materials and workmanship.

may be copied or reproduced in any form or by any means without

thepriorwrittenconsentofZiLOG, Inc.Theinformationinthisdoc-

ument is subject to change without notice. Devices sold by ZiLOG,

Inc. are covered by warranty and patent indemnification provisions

appearing in ZiLOG, Inc. Terms and Conditions of Sale only.

ZiLOG’s products are not authorized for use as critical components

in life support devices or systems unless a specific written agree-

ment pertaining to such intended use is executed between the cus-

tomer and ZiLOG prior to use. Life support devices or systems are

those which are intended for surgical implantation into the body,

or which sustains life whose failure to perform, when properly used

in accordance with instructions for use provided in the labeling, can

be reasonably expected to result in significant injury to the user.

ZILOG, INC. MAKESNOWARRANTY, EXPRESS, STATUTO-

RY, IMPLIED OR BY DESCRIPTION, REGARDING THE IN-

FORMATION SET FORTH HEREIN OR REGARDING THE

FREEDOM OF THE DESCRIBED DEVICES FROM INTEL-

LECTUAL PROPERTY INFRINGEMENT. ZILOG, INC.

MAKES NO WARRANTY OF MERCHANTABILITY OR FIT-

NESS FOR ANY PURPOSE.

ZiLOG, Inc.

910 East Hamilton Avenue, Suite 110

Campbell, CA 95008

Telephone (408) 558-8500

FAX 408 558-8300

ZiLOG, Inc. shall not be responsible for any errors that may appear

in this document. ZiLOG, Inc. makes no commitment to update or

keep current the information contained in this document.

Internet: http://www.zilog.com

28

PS001000-MOD0599


型号：	Z0220516SSCR4292TR
厂家：	ZILOG, INC.
描述：	MODEM CONTROLLER IDEAL FOR LOW POWER CONSUMPTION, SMALL SIZE REQUIREMENTS 调制解调器控制器非常适用于低功耗，小尺寸的要求调制解调器控制器
文件：	总30页 (文件大小：182K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Z0220516SSCR4292TR [ZILOG]

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