CR2010-2W-3651F_技术文档

Si2493/57/34/15/04

Global ISOmodem-EVB

Evaluation Board Rev 5.0 for the Si2493/57/34/15/04

ISOmodem with UART and SPI Interfaces

A direct access header (J103) is available on the

motherboard to bypass the RS-232 transceivers and

connect the Si2493/57/34/15/04 ISOmodem directly to

a target system.

Description

The global Si2493/57/34/15/04-EVB evaluation board

Rev 5.0 provides the system designer an easy way of

evaluating the Si2493/57/34/15/04 ISOmodem . The

®

An on-board rectifier, filter, and voltage regulator allow

the power input to be 7.5–13 V ac or dc (either polarity)

supplied through a screw terminal (J8) or a standard

2 mm power jack (J9). Alternatively, power can be

supplied through the USB interface (whether the USB or

RS232 interface is used). The evaluation board can

drive an external speaker for call monitoring or the

speaker mounted directly on the board. Please note that

the PCM interface, parallel interface, and EEPROM are

available on the 24-pin FT only. See "1.7.EVB Part

Numbers" on page 8 for ISOmodem EVB options.

Si2493/57/34/15/04-EVB consists of a motherboard

with a power supply, an RS-232 and USB interface,

other ease-of-use features, and a complete removable

modem module on a daughter card. (A functional block

diagram of the Si2493/57/34/15/04-EVB is shown

below.) The Si2493/57/34/15/04 ISOmodem is a

complete controller-based modem chipset with an

integrated

and

programmable

direct

access

arrangement (DAA) that meets global telephone line

requirements. Available as a combination of one 16-pin

small line-side device and one 24-pin or 16-pin system-

side device, the Si2493/57/34/15/04 ISOmodem

eliminates the need for a separate DSP data pump,

modem controller, memories, codec, isolation

transformer, relays, opto-isolators, and a 2- to 4-wire

hybrid. The Si2493/57/34/15/04 is ideal for embedded

modem applications due to its small board area,

controller-based architecture, low power consumption,

and global compliance. The Si2493/57/34/15/04-EVB

provides an RJ-11 jack (for interfacing the Si2493/57/

34/15/04-EVB to the phone line), and USB and RS232

serial ports for interfacing to a PC or data terminal. This

allows the ISOmodem to operate as a serial modem for

straightforward evaluation of the Si2493/57/34/15/04. To

evaluate the Si2493/57/34/15/04 ISOmodem in an

embedded system, the daughter card can be used

independently of or with the motherboard.

Features

The Si2493/57/34/15/04-EVB includes the following:

 Dual RJ-11 connection to phone line

 RS-232 and USB interface to PC

 Speaker for call monitoring

 Direct access to Si2493/57/34/15/04 for embedded

application evaluation

 Easy power connection to common 7.5 V–13.5 V

power supplies or USB port.

 9 V ac adaptor

 Simple installation and operation

 EEPROM (24-pin FT only)

 RS232 lines status display on LEDs.

Functional Block Diagram

Audio

Out

7.5-13.5 V dc or

peak ac Adaptor

Audio

Amplifier

Rectifier

Filter

Voltage

Regulator

Direct

Access HDR

3.3 V

Daughter Board Boundary

5 V

USB

Connector

USB I/F

Phone

line

AOUT

Interface

Selection

Jumpers

Interface

Circuit

Si2493/57/34/15/04

Si3018*

RJ-11

UART

RS-232

Transceivers

DB9

RESET XTALO XTALI

Push Button

Reset

Power-On

Reset

*Si3010 for Si2404

Rev. 0.7 4/11

Si2493/57/34/15/04-EVB

Si2493/57/34/15/04

Global ISOmodem-EVB

1.3. Motherboard and Daughter Card

Configuration

1. Si2493/57/34/15/04-EVB Setup and

Evaluation

The EVB consist of a motherboard that takes a plug in

daughter card. The motherboard can be configured in a

variety of ways that are explained below and are

managed via jumpers. The daughter card contains both

the modem system side and the isolated line interface

(DAA).

This section explains how to set up the Si2493/57/34/

15/04-EVB for evaluation as an RS-232 or USB

interface modem. Jumper settings, power connection,

PC/terminal connections, and terminal program

configuration settings are given. The initial modem

setup after power is applied as well as a basic tutorial

on modem operation are provided. Si2493/57/34/15/04-

EVB configurations for evaluating additional features

are discussed separately. See the Si2493/57/34/15 or

Si2404 data sheets and “AN93: Si2493/57/34/15/04/04

Modem Designer’s Guide” for complete details.

The daughter card comes preconfigured and functional

although the user may decide to change some

operating options such as the type of crystal used with

the modem chip or the type of control signals used, i.e.

UART vs parallel. These features must be managed by

changing strapping resistors soldered down to the

daughter card and by changing parts associated with

the crystal. These possible changes are explained

below.

1.1. Si2493/57/34/15/04-EVB Quick Start—

RS-232 Interface

1. Set jumpers according to Figure 1, but change J6 to the

arrangement shown in Figure 3 if an FS ISOmodem

package is used.

1.3.1. Motherboard Configuration

Check all the jumper setting on the S2493/57/34/15/04-

EVB before applying power. The standard factory

setting for the modem in a 24-pin FT package are

shown in the figure below. This setup configures the

modem for RS232 serial operation with autobaud

enabled. Any standard terminal program configured to

communicate through a PC com port can be used to

communicate with the EVB.

2. Connect:

DB-9 to PC COM 1 (with a pass-through cable).

RJ-11 to phone line or CO simulator.

9 V ac adaptor (or USB cable).

3. Bring up:

Turn on power to modem.

Autobaud automatically adjusts modem DTE speed and

protocol.

Figure 1 shows the default motherboard setup for the

FT package daughter card as well as the functions of

connectors and jumpers.

4. Type “AT” followed by a carriage return.

Should echo “AT” and then an “OK”.

1.2. Si2493/57/34/15/04-EVB Quick Start—

USB Interface

1. Set jumpers according to Figure 3, but change J6 to the

arrangement shown in Figure 3 if an FS ISOmodem

package is used.

2. Connect:

USB cable to PC

RJ-11 to phone line or CO simulator

3. Download USB driver for your operating system from the

CD supplied with the evaluation board.

4. Install driver.

5. Bring up.

Reset the modem.

Autobaud automatically adjusts modem DTE speed and

protocol.

6. Type “AT” followed by a carriage return.

Should echo “AT” and then an “OK”.

2

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

Rev. 0.7

3

Si2493/57/34/15/04

Global ISOmodem-EVB

1.3.1.1. RS232 vs USB vs User Provided IO

Selection

Various modem control lines can be rearranged

depending on the user preferences and the specific

modem chips used. This is done using JP6. The basic

two JP6 configurations are shown in the following

figures.

To change to USB operation simply move the RS232

selection jumper on JP23 to the USB position as

marked on the PCB and shown in Figure 1. When the

USB vs UART settings are changed the appropriate

indicator LED will light up on the EVB.

J6

If neither jumper is in place then neither serial port will

be activated and the user must provide I/O signals via

the pins on J103. This IO can be in ASYNCH SERIAL,

SPI SERIAL and Parallel Bus mode.

3

6

1

4

1.3.1.2. Autobaud Control

7

10

13

9

Autobaud is enabled with no jumper at the JP34

position. When a jumper is in place, autobaud is

disabled and the user must setup the host to run 19k2

baud in order to use the modem.

12

15

1.3.1.3. EEPROM Control

Figure 2. Default J6 Setup for 24-Pin Modem

Chips

To enable the EEPROM (U5) both jumpers JP34 and

JP35 must be in place and the modem reset.

JP35 physically connects the EEPROM chips select

line to the modem and allows the EEPROM to function

when addressed by the modem, while JP34 connects a

strapping option to the correct modem pin which is

sensed during reset and instructs the modem firmware

to use the EEPROM.

J6

3

6

1

4

1.3.1.4. Call Progress Configuration

7

10

13

9

The modem call establishment can be heard by

enabling the call progress feature via software (see

AN93) and Hardware. The hardware components

include installing JP12 which enabled the audio power

amplifier and installing JP14 to connect the on board

speaker to the power amplifier output. If an offboard

speaker is to be used then JP14 can be removed and

the alternate speaker can be connected to pins 1 and 4

of JP11. Note the this audio output is 8  and

differential so that neither output pin should be

grounded.

12

15

Figure 3. Default J6 Setup for 16-Pin Modem

Chips

The specific details of what the jumpers connect are

shown in Table 1, which is also found printed on the

underside of the EVB.

1.3.1.5. Control Line Configuration

Table 1. Routing of Control Signals with Jumper Position on J6

RS232

Si24xx 24-Pin

Si24xx 16-Pin

Si2401

Signal

Left

Right

Left

Right

Left

Right

DCD

RI

DCD

RI

SDI/EESD

FSYNCH

RI

DCD

NC

RI

DCD

NC

RI

DTR

RTS

ESC

RTS

ESC

NC

RTS

ESC

NC

SDO/

GPIO1

EECLK

DSR

INT

AOUT/INT

NC

INT

NC

AOUT/INT

4

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

1.3.2. Daughter Card Configuration

The daughter card comes configured with either a 24-

pin FT or 16-pin FS system side part and either 32 kHz

or 4.9152 MHz operation, and UART operation. The

daughter card can also be setup to operate with a third

clock frequency, an on board 27 MHz oscillator. To

change between these options requires component

changes on the daughter card.

The daughter card can also operate in three possible

interface modes: parallel bus mode, in SPI mode as well

as the default UART mode.

There are six small (0402) strapping resistors (R101 to

R106) that are on the daughter card and are configured

differently depending on the combination of chip

package, clock frequency chosen, and interface mode.

See Figures 5 and 6 for details.

The card and its options are shown in Figure 4, which

shows the Modem Daughter card Rev 2.0 top and

bottom views with the critical parts that may be changed

to select another command mode (i.e. SPI) or an

alternate crystal frequency, such as 4.9152 MHz.

Rev. 0.7

5

Si2493/57/34/15/04

Global ISOmodem-EVB

Three possible crystals or ext oscillator.

TOP VIEW

These option strapping resistors select

modem command mode UART, SPI or

Parallel and crystal clock frequency.

BOTTOM VIEW

Crystal loading caps (C40 & C41)

specific to the crystal type used.

Figure 4. Modem Daughter Card Rev 2.0 Top and Bottom Views

Figure 5. R101–R106 Setup for Clock and Mode Configuration on the DC with the 16-Pin FS

Package

6

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

Figure 6. R106 Setup for Clock and Mode Configuration on DC with 24-Pin FT Package

1.3.2.1. 32 kHz Setup

Table 2. Signal Usage

For 32 kHz, populate Y1 with the 32 kHZ crystal shown

in the BOM and use 18 pF capacitors for the C40/C41

values. Also remove Y3 and Y1b if present and strap

R101 to R106 as shown in Figure 5.

SPI Function

JP23 Pin Number

Legacy Pin

Function

SPI_CSb

SPI_MISO

SPI_MOSI

SPI_SCLK

5

7

RTSb

RXD

TXD

The modem should then work as expected; no changes

are needed on the motherboard

9

1.3.2.2. 4.9152 MHz

11

CTSb

For 4.9152 MHz, populate Y1b with the 4.9152 MHz

crystal shown in the BOM and use 33 pF capacitors for

the C40 and C41 values. Also remove Y3 and Y1 if

present and strap R101 to R106 as shown in Figures 5

or 6 above.The modem should then work as expected;

no changes are needed on the motherboard

1.3.3. Parallel Bus Mode Setup

To change to parallel bus mode setup it is necessary to

configure the R101 straps as shown in Figure 5 or

Figure 6, according to the package and clock used.

Then setup the daughter card with neither UART nor

USB operation selected, i.e. with no jumper on JP23.

The SPI signals can then be obtained on J103, the

system connector and connected to the host. See the

data sheet and schematic for signal and pin usage.

1.3.2.3. 27 MHz

For 27 MHz, populate Y3 with the small surface mount

oscillator shown in the BOM and remove Y3 and Y1b if

present. Also remove any capacitors at the C40 and

C41 positions.

1.4. Power Requirements

Strap R101 to R106 as shown in Figures 5 or 6 above.

The Si2493/57/34/15/04-EVB has an on-board diode

bridge, filter capacitor, and voltage regulator (U10 and

U18). Power can be supplied from any source capable

of providing 7.5 V–13 V dc or 7.5 V–13 V peak ac and

The modem should then work as expected; no changes

are needed on the motherboard

1.3.2.4. SPI Mode Setup

To change to SPI mode setup it is necessary to at least 100 mA. (Additional current may be required if a

configure the R101 straps as shown in Figure 5 or speaker is connected for monitoring call progress

Figure 6, according to the package and clock used. tones.) Power may be applied to the Si2493/57/34/15/

Then setup the daughter card with neither UART nor 04-EVB through the screw terminals (J8), the 2 mm

USB operation selected, i.e. with no jumper on JP23. power jack (J9), or the USB cable (even if the modem is

The SPI signals can then be obtained on J103, the configured for RS-232 operation). The onboard full-

system connector and connected to the host. Signal wave rectifier and filter ensure the correct polarity is

usage is described in Table 2.

applied to the Si2493/57/34/15/04-EVB. Daughter card

current can be measured by connecting a DVM across

R59, a 1  resistor using the supplied test points on

Rev. 0.7

7

Si2493/57/34/15/04

Global ISOmodem-EVB

either side.

the data mode. After the ATO command, the modem

resumes the data connection and no longer accepts AT

commands.

1.5. Terminal and Line Connections

The Si2493/57/34/15/04 can be tested as a standard

serial data modem by connecting the Si2493/57/34/15/

04-EVB to a personal computer or other data terminal

equipment (DTE), phone line, and power. Connect a PC

serial port to the DB9 connector on the Si2493/57/34/

15/04-EVB with a pass-through cable. The RS-232

transceivers on the EVB can communicate with the DTE

at rates up to 1 Mbps. Any standard terminal program,

such as HyperTerminal or ProComm, running on a PC

communicates with the Si2493/57/34/15/04-EVB. The

standard factory jumper configuration has autobaud

enabled. Autobaud detects the DTE speed, data length,

parity, and number of stop bits.

1.7. EVB Part Numbers

The ISOmodem evaluation boards are offered in

multiple speeds and packaging options. The first four

numbers indicate the system-side device. The next two

letters indicate the system-side package (FS–Lead-free,

16-pin SOIC; FT–Lead-free, 24-pin TSSOP). The final

two numbers indicate the line-side device. See Figure 7.

Si2457-D-FS18-EVB

LS Part Number (Si30xx)

SS Package

If JP33 is installed, autobaud is disabled. Configure the

terminal emulation program to 19200 bps, eight data

bits, no parity, one stop bit, and hardware (CTS)

handshaking. Connect the RJ-11 jack on the Si2493/57/

34/15/04-EVB to an analog phone line or telephone line

simulator, such as a Teltone TLS 5.

SS Revision

SS Part Number

Figure 7. EVB Part Number Example

2. Si2493/57/34/15/04-EVB

Functional Description

1.6. Making Connections

The Si2493/57/34/15/04-EVB is

a

multipurpose

With the terminal program properly configured and

running, apply power to the Si2493/57/34/15/04-EVB.

Type “AT<cr>”, and the modem should return “OK”

indicating the modem is working in the command mode

and communicating with the terminal. If the “OK”

response is not received, try resetting the modem by

pressing the manual reset switch (S1); then, again type

“AT<cr>.” Next, type “ATI6<cr>.” The modem should

respond with “2493”, “2457”, “2434”, “2415”, or “2404”

indicating the terminal is communicating with an Si2493,

Si2457, Si2434, Si2415, or Si2404.

evaluation system. The modem daughter card

illustrates the small size and few components required

to implement an entire controller-based modem with

global compatibility. The daughter card can be used

independently of, or in conjunction with, the

motherboard. The motherboard adds features that

enhance the ease of evaluating the many capabilities of

®

the Si2493/57/34/15/04 ISOmodem .

2.1. Motherboard

The motherboard provides a convenient interface to the

Si2493/57/34/15/04 DC (daughter card). The versatile

power supply allows for a wide range of ac and dc

voltages to power the board. RS-232 transceivers and a

DB9 connector allow the Si2493/57/34/15/04-EVB to be

easily connected to a PC or other terminal device.

Jumper options allow direct access to the LVCMOS/TTL

level serial inputs to the Si2493/57/34/15/04, bypassing

the RS-232 transceivers or USB interface. This is

particularly useful for directly connecting the Si2493/57/

34/15/04 to embedded systems.

Type “ATS0=2<cr>” to configure the modem to answer

on the second ring.

To take the modem off-hook, type “ATH1<cr>.” The

modem should go to the off-hook state, draw loop

current, and respond with an “OK.” Next, type

“ATH<cr>” or “ATH0<cr>”, and the modem should hang

up (go on-hook) and stop drawing loop current.

To make a modem connection, type “ATDT(called

modem phone number)<cr>.” Once the connection is

established, a “CONNECT” message appears indicating

the two modems are in the data mode and

communicating. Typing on one terminal should appear

on the other terminal. To return to the command mode

without interrupting the connection between the two

modems, type “+++.” Approximately two seconds later,

“OK” appears. The modem is now in command mode

and accepts “AT” commands.Type “ATH” (or “ATH0”) to

terminate the data connection, or type “ATO” to return to

The Si24xxURT-EVB motherboard connects to the

daughter card through two connectors, JP101 and JP2.

JP101 is an 8x2 header providing connection to all

Si2493/57/34/15/04 digital signals and regulated 3.3 V

power for the Si2493/57/34/15/04. The Si2493/57/34/

15/04 digital signals appearing at JP101 (daughter card

interface) are LVCMOS and TTL compatible. JP2 is a

4x1 socket providing connection between the daughter

8

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

card and the RJ-11 phone jack.

2.1.5. EEPROM Enable (FT Only)

2.1.1. Voltage Regulator/Power Supply

Connecting JP34 and JP35 enables the optional

EEPROM, U5. See “AN93: Si2457/Si2434/Si2415/

Si2404 Modem Designer’s Guide” for programming

details.

The input voltage to either J8 or J9 must be between 7.5

and 13.5 V dc or 7.5 and 13.5 V

ac. The

PEAK

motherboard includes a diode bridge (D12) to guard

against a polarity reversal of the dc voltage or to rectify 2.1.6. Interface Selection

an ac voltage. The power source must be capable of

The serial interface of the Si2493/57/34/15/04-EVB can

continuously supplying at least 100 mA. C44 serves as

a filter cap for an ac input. The voltage regulator, U10,

provides 5 V for the motherboard and the input for

voltage regulator U3, which outputs 3.3 V for use on the

motherboard and to power the daughter card. Si24xxDC

power consumption can be measured by placing a

meter across R59. Power is supplied to U2 through D5

from the USB.

be connected to a computer, terminal, embedded

system, or any other data terminal equipment (DTE) via

a standard RS-232 interface, USB interface, or through

a direct TTL serial interface.

The Si2493/57/34/15/04 can be tested as a standard

data modem by connecting the Si2493/57/34/15/04-

EVB to a personal computer or other DTE power supply

and a phone line. A PC can communicate with the

Si2493/57/34/15/04-EVB using a standard terminal

2.1.2. Reset Circuitry

The Si2493/57/34/15/04 requires a reset pulse to program, such as HyperTerm or ProComm.

remain low for at least 5.0 ms after the power supply

has stabilized during the powerup sequence or for at

04-EVB is connected to the DTE.

least 5.0 ms during a power-on reset. Most production

Si2493/57/34/15/04 modem chipset applications require

that RESET be controlled by the host processor. Certain

Jumper settings determine how the Si2493/57/34/15/

2.1.7. RS-232 Interface

This operation mode uses the standard factory jumper

settings illustrated in Figure 1 on page 3. The Maxim

Si2493/57/34/15/04

operation

modes,

including

MAX3237 transceiver interfaces directly with the TTL

levels available at the serial interface of the Si2493/57/

34/15/04 and, using internal charge pumps, makes

these signals compatible with the RS-232 standard. The

RS-232 transceiver on the Si2493/57/34/15/04-EVB can

communicate at rates between 300 bps and 1 Mbps.

This simplifies the connection to PCs and other data

terminal equipment (DTE). The signals available on the

powerdown, require a hardware reset to recover.

The Si2493/57/34/15/04-EVB contains two reset

options, an automatic power-on reset device, U18

(DS1818) (default), and a manual reset switch (S1) to

permit resetting the chip without removing power. A

reset, regardless of the mechanism, causes all modem

settings to revert to factory default values.

2.1.3. Automatic Reset (DS1818)

Si2493/57/34/15/04-EVB

serial

interface

(DB9

The DS1818 is a small, low-cost device that monitors connector) are listed in Table 3.

the voltage on V and an external reset pushbutton. If

D

2.1.8. USB Interface

V

drops below 3.0 V, the DS1818 provides a 220 ms

D

The USB cable connects to J10 on the motherboard

and provides both data and power. Installing a jumper

on JP23 enables the USB interface and disables the

RS-232 interface. The USB interface is provided by

U12. A USB driver for this chip is available for most PC

and MAC operating systems on the CD.

active-low reset pulse. On powerup, the DS1818 also

outputs an active low reset pulse for 220 ms after V

reaches 90% of the nominal 3.3 V value. The DS1818

outputs a 220 ms reset pulse any time the power supply

voltage exceeds the 3.3 V ±10% window.

D

2.1.4. Manual Reset

The manual reset switch (S1) performs a power-on

reset. This resets the Si2493/57/34/15/04 to factory

defaults without turning off power. Pressing S1 activates

the reset monitor in the DS1818 and produces a 220 ms

active low reset pulse.

Rev. 0.7

9

Si2493/57/34/15/04

Global ISOmodem-EVB

2.1.9. Direct Access Interface

operation of the modem. See “AN93: Si3457/34/15/04

Modem Designer’s Guide” for more details on the

features controlled by pin strapping.

While the motherboard supplies power through J8, J9,

or USB, power-on reset, and an RJ–11 jack for the

modem, the direct access interface (J103) is used to Since this PWM signal swings rail to rail and is simply

connect the motherboard to an embedded system. J103 filtered by a low pass filter to acquire the audio. It is

provides access to all Si2493/57/34/15/04 signals important to keep the power supply to the modem free

available on the daughter card.

of noise in the audio spectrum.

It is necessary to remove the jumper on JP23 to disable 2.1.11.2. The Audio Output Amplifier (LM4819)

both the RS-232 and USB interface and prevent signal

contention.

The Power amplifier on the EVB is powered by a current

limited 4.2 V supply. The current limit is implemented in

2.1.10. PCM Interface (24-Pin FT Only)

the EVB because it is intended for HW/SW

development and is not needed for a production design.

This amplifier can drive an 8  speaker with 200 mW of

Call progress audio (i.e., ISOmodem's call progress

dialing and negotiation tones).

The Si2493/57/34/15/04 PCM interface can be

demonstrated using the voice motherboard, not with this

EVB.

2.1.11. AOUT Call Progress Audio Output

The power amplifier itself is a low cost, rugged H bridge

type device. There are several pin compatible designs

from multiple vendors that can provide alternate price/

power tradeoffs for this amplifier. This power amp can

be shut down by removing jumper JP12. The signal at

JP12 can also be tied to a control signal to allow the

host to shut down the amplifier. The customer can

change the values of R172 and R173 when integrating

the EVB to his system, but should keep the RC formed

by C37 and R173 at a 50 Hz or higher corner to avoid a

power-on thump.

Call progress audio output is provided by the Si2493/57/

34/15/04 on the AOUT pin as a PWM signal. This signal

allows the user to monitor call progress signals, such as

dial tone, DTMF dialing, ring, busy signals, and modem

negotiation. Control of this signal is provided by AT

commands and register settings described in the

introduction. The AOUT signal is connected to an on

board amplifier, for a high-quality output. AOUT can

also be connected to a summing amplifier or multiplexer

in an embedded application as part of an integrated

audio system.

2.1.11.3. The Call Progress Speaker

2.1.11.1. AOUT Audio Processing

The Call progress speaker, Regal RE-2308-NL is

connected to the amplifier via a jumper, JP14. If another

speaker is to be connected then it is necessary to

remove JP14 and connect the external speaker to JP11,

Pins 1 and 4. It is important to remember that the

speaker signal is differential. Both the output pins are

driven outputs and must not be grounded.

The AOUT signal discussed in this section leaves the

Si2493/57/34/15/04 is processed (demodulated) by a

high pass filter: (R133,134,135, and C24, C25, 26,

C27). It is critically important to not put a dc load on the

AOUT pin since the pin also acts as a modem feature

control on reset and is internally weakly pulled up. Any

unintentional dc load on AOUT prevents proper

Table 3. DB9 Pin Connections

J1 Name

Carrier Detect

J1 Symbol

J1 Pin

Si2493/57/34/15/ Si2493/57/34/15/

04 Pin

See note

9

04 Name

DCD/EESD

RXD

*

CD

RXD

TXD

DTR

SG

1

Received Data

Transmit Data

2

3

10

TXD

Data Terminal Ready

Signal Ground

4*

5

See note

6

ESC/RI

GND

Data Set Ready

Ready to Send

Clear to Send

DSR

RTS

CTS

RD

6*

7*

8

See note

11

INT/AOUT

RTS/RXCLK

CTS

*

Ring Indicator

9

17

RI

*Note: JP6 jumper option.

10

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

2.2. Modem Daughter Card Operation

The Si2493/57/34/15/04URT-EVB daughter card is a

complete modem solution perfectly suited for use in an

embedded system. The daughtercard contains both the

modem system-side chip and the isolated line interface

(DAA).

The daughter card requires a 3.3 V supply capable of

providing at least 35 mA and communicates with the

system via LVCMOS/TTL-compatible digital signals on

JP1. The RJ-11 jack (TIP and RING) is connected via

JP2. Be sure to provide the proper power-on reset pulse

to the daughter card if it is used in the stand-alone

mode.

2.2.1. Reset Requirements

®

The Si2493/57/34/15/04 ISOmodem daughter card

must be properly reset at powerup. The reset pin (pin 8)

of the Si2493/57/34/15/04 (JP103, J101 pin 13) must be

held low for at least 5.0 ms after power is applied and

stabilized to ensure the device is properly reset.

2.2.2. Crystal Requirements

Clock accuracy and stability are important in modem

applications. To ensure reliable communication between

modems, the clock must remain within ±100 ppm of the

design value over the life of the modem. The crystal

selected for use in a modem application must have a

frequency tolerance of less than ±100 ppm for the

combination of initial frequency tolerance, drift over the

normal operating temperature range, and five year

aging. Other considerations, such as production

variations in PC board capacitance and the tolerance of

loading capacitors, must also be taken into account.

2.2.3. Protection

The Si2493/57/34/15/04-EVB meets or exceeds all FCC

and

international

PTT

requirements

and

recommendations for high-voltage surge and isolation

testing without any modification. The protection/isolation

circuitry includes C1, C2, C8, C9, FB1, FB2, and RV1.

The PCB layout is also a key “component” in the

protection circuitry. The Si2493/57/34/15/04-EVB

provides isolation to 3 kV. Contact Silicon Laboratories

for information about designing to higher levels of

isolation.

Rev. 0.7

11

Si2493/57/34/15/04

Global ISOmodem-EVB

3. Design

The following sections contain the schematics, bill of materials, and layout for the Si2493/57/34/15/04 including the

daughter card and motherboard.

D

G N

1 2

D V D 3 . 3

4

3 .

3

V D

3 . 3 V D

D

G N

2 1

5

2 0

6

12

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

+

S C

1 1

N D I G

1 5

Rev. 0.7

13

Si2493/57/34/15/04

Global ISOmodem-EVB

4. Bill of Materials: Si24xx Daughter Card

Table 4. Si24xx Daughter Card Bill of Materials

Item Qty

Ref

C1, C2

C3

Value

33 pF

Rating

Voltage

250 V

50 V

Tol

Type

Y2

PCB Footprint

C1808

Mfr Part Number

SCC1808X330K502T

GRM21BR72E103KW03L

EEE1HS010SR

Mfr

1

2

3

4

5

6

7

8

2

1

2

1

2

1

2

Y2

±10%

±20%

±10%

±20%

±5%

Holy Stone

Murata

0.01 µF

1 µF

X7R

C0805

C4

Alum_Elec

X7R

C3.3X3.3MM

C0603

Panasonic

Venkel

C5, C6

C7

0.1 µF

2.7 nF

680 pF

0.01 µF

18 pF

16 V

C0603X7R160-104M

C0603X7R500-272M

SCC1808X681K502T

C0603X7R160-103M

C0603COG500-180J

50 V

X7R

C0603

Venkel

C8, C9

C10

Y2

250 V

16 V

Y2

C1808

Holy Stone

Venkel

X7R

C0603

C40,

C41

50 V

COG

C0603

Venkel

9

3

2

C50,

C52,

C56

0.1 µF

10 V

±20%

X7R

X5R

C0603

C0603X7R100-104M

C0603X7R6R3-224K

Venkel

10

C51,

C53

0.22 µF

6.3 V

±10%

11

12

13

1

3

C54

D1

1 µF

HD04

600 

25 V

X5R

BRIDGE

SMT

C0603

MiniDIP4

L0603

C0603X5R250-105K

HD04-T

Venkel

Diodes Inc.

Murata

0.8 A

400 V

FB1,

FB2,

FB5

200 mA

BLM18AG601SN1

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

1

2

1

2

1

2

1

2

J1

J2

SOCKET 8x2

4X1 Header_0

SOCKET

SOCKETX8-100-SMT

CONN1X4-100-SMT

SOT23-BEC

DO-214AA-NP

R2010

SSW-108-22-G-D-VS

TSM-104-01-T-SV

MMBTA42LT1

Samtec

Berg

Q1 Q3

Q2

MMBTA42LT1 200 mA

MMBTA92LT1 100 mA

MMBTA06LT1 500 mA

P3100SB

300 V

80 V

NPN

On Semi

Littelfuse

Venkel

PNP

MMBTA92LT1

Q4 Q5

RV1

R1

NPN

MMBTA06LT1

275 V

Sidactor

ThickFilm

P3100SBL

1.07 k

150 

1/2 W

1/16 W

1/2 W

1/16 W

1/8 W

1/16 W

1/4 W

1/2 W

1/16 W

±1%

±5%

±1%

±5%

±1%

CR2010-2W-1071F

CR0603-16W-151J

CR2010-2W-3651F

CR2010-2W-2491F

CR0603-16W-104J

CR0805-8W-206J

CR0603-16W-1004F

CR1206-4W-5360F

CR2010-2W-73R2F

CR0603-16W-56R2F

R2

R0603

R3

3.65 k

2.49 k

100 k

20 M

1 M

R2010

R4

R2010

R5, R6

R7, R8

R9

R0603

R0805

R0603

R10

R11

536 

R1206

73.2 

56.2 

R2010

R12,

R13

R0603

30

31

2

R15,

R16

0 

1 A

ThickFilm

R0603

CR0603-16W-000

Venkel

R120,

R121

32

33

1

4

R18

1.2 k

10 k

1/10 W

±5%

ThickFilm

R0603

CR0603-10W-121J

CR0603-10W-103J

Venkel

R101,

R102,

R103,

R104,

R106

14

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

Table 4. Si24xx Daughter Card Bill of Materials (Continued)

Item Qty

Ref

Value

1 k

Rating

1/10 W

Voltage

Tol

Type

PCB Footprint

R0603

Mfr Part Number

CR0603-10W-102J

CR0603-10W-2000J

Mfr

34

35

1

3

R105

±5%

ThickFilm

Venkel

R110,

R111,

R112

200 

R0603

36

37

38

1

U2

Si3018

Si24xx

300 V

LineSide

SO16N6.0P1.27

TSSOP24N6.4P0.65

16pin SOIC

Si3018-F-GS

Si2493-E-FT

2493

SiLabs

U12

U13

ISOMODEM

Si24xx-16 pin

Silicon

Laboratories

39

40

1

Y1B

(Y1, Y3)

32.768 kHz

43 V

XTAL-3X8-LD

SOD-123

ECS–.327–12.5–8X

BZT52C43-7-F

ECS

International

Z1

500 mW

43 V

Zener

Diodes Inc.

Rev. 0.7

15

Si2493/57/34/15/04

Global ISOmodem-EVB

C

V C

D G N

8

4

D

G N

1 0

C

V C

2 0

C

V C

D

G N

C

V C

D G N

1 6

8

1 6

8

16

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

2

1

D

V D

D G N

6

7

2

1

Rev. 0.7

17

Si2493/57/34/15/04

Global ISOmodem-EVB

18

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

1 0 K

R 1 1 0

C

V C

D G N

2 6

2

1 0 K

R 1 0 9

1 0 K

R 1 1 1

1 5 V

D N 8

1 5 V

D N 7

D

V D

D

G N

6

E P A D

3

1 5 V

D N 6

D N 5

D N 4

1 5 V

D N 3

D N 2

1 5 V

D N 1

M H

S H

1 1

1 0

5

6

Rev. 0.7

19

Si2493/57/34/15/04

Global ISOmodem-EVB

5. Bill of Materials: Si24xx Motherboard

Table 5. Si24xx Motherboard Bill of Materials

Item Qty

Ref

Value

Rating Voltage Tol

Type

PCB Footprint

Mfr Part Number

Mfr

1

8

C21, C23,

C37, C43,

C54, C55,

C69, C74

1 µF

10 V

±10%

X7R

C0603

C0603X7R100-105K

Venkel

2

17

C24, C25,

C26, C27,

C53, C56,

C57, C58,

C59, C61,

C62, C63,

C71, C72,

C75, C96,

C98

0.1 µF

10 V

±20%

X7R

C0402

C0402X7R100-104M

Venkel

3

4

3

1

C42, C51,

C60

0.01 µF

470 µF

25 V

±10%

X7R

C0402

C0402X7R250-103K

Venkel

C44

±20% Alum_Ele C10.3X10.3MM EMVE250ADA471MJA0G

c

United

Chemicon

5

6

7

1

2

3

C48

0.1 µF

10 µF

50 V

16 V

±10%

X7R

X5R

X7R

C0603

C0805

C0603

C0603X7R500-104K

C0805X5R160-106K

C0603X7R160-561K

Venkel

C49, C66

C52, C70,

C73

560 pF

8

9

1

8

C97

1 nF

15 V

100 V ±10%

15 V

X7R

C0603

C0603X7R101-102K

MMBZ15VDLT1G

Venkel

DN1, DN2,

DN3, DN4,

DN5, DN6,

DN7, DN8

225 mW

Zener,

Dual

SOT23-AAK

On Semi

10

11

2

1

D11, D13

D12

STPS140Z

1.0 A

0.8 A

40 V

Schottky

BRIDGE

SOD-123

MiniDIP4

STPS140Z

HD01-T

ST MICRO

Diodes Inc.

Bridge

100 V

Rectifier

12

13

3

D14, D15, MMBD300 225 mA 300 V

DUAL

SOT23-AKC

MMBD3004S-7-F

HSMC-C170

Diodes Inc.

D49

4S-7-F

11

D41, D42,

D43, D44,

D45, D46,

D47, D48,

D50, D52,

D53

RED

25 mA

1.9 V

SMT,

Chip LED

LED-HSMX-

C170

Avago

Technologies

14

15

1

5

D54

BAV23A

400 mA 200 V

DUAL

SMT

SOT23-KKA

L0603

BAV23A

Diodes Inc.

MuRata

FB6, FB7,

FB8, FB9,

FB11

600 Ohm 200 mA

BLM18AG601SN1

16

17

4

HW1, HW2,

HW3, HW4

spacer

screw

2397

SPC

Technology

HW5, HW6,

HW7, HW8

NSS-4-4-01

Richco

Plastic Co

20

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

Table 5. Si24xx Motherboard Bill of Materials (Continued)

Item Qty

Ref

Value

Rating Voltage Tol

Type

PCB Footprint

Mfr Part Number

Mfr

18

1

JP11

HEADER

4X1

Header

CONN-1X4

TSW-104-07-T-S

Samtec

19

20

2

1

JP12, JP14 JUMPER

Header

CONN-1X2

CONN-1X3

TSW-102-07-T-S

TSW-103-07-T-S

Samtec

JP23

HEADER

1x3

21

22

23

24

25

3

1

JP33, JP34, JUMPER

JP35

Unshroud

ed

CONN-1X2

68000-402

MTJG-2-64-2-2-1

TSW-105-07-S-T

1729018

Berg

J5

J6

J8

J9

RJ-11

RJ11-DUAL-

MTJG

ADAM TECH

Samtec

HEADER

5x3

Header

CONN

TRBLK 2

TERM

BLK

CONN-1X2-TB

PHOENIX

CONTACT

Power

Jack

1 A

BARREL CONN-3-PWR

ADC-002-1

Adam Tech

26

27

1

J10

J11

DB9

D-SUB

USB

CONN-9-DBF

CONN-USB-B

D09S33E4GX00LF

292304-1

FCI

USB Type

B

Tyco

28

1

J101

HEADER

8x2

Header

CONN2X8

16/80 pins of 9-146252-0- Tyco/AMP

08

29

30

1

J102

J103

Socket 1x4

SSW-104-01-T-S

5103309-3

Samtec

Tyco

8X2

Shrouded CONN2X8-4W

Shrouded

Header

31

32

1

7

LS1

SPEAKER 0.5 W

Max

RE-2308-NL

Regal

R31, R40,

R41, R42,

R43, R52,

R109, R110,

R111, R112

10 k

1/10 W

±1% ThickFilm

R0603

CR0603-10W-1002F

Venkel

33

3

R33, R34,

R35

1 k

1/16 W

±1% ThickFilm

CR0603-16W-1001F

Venkel

34

35

36

37

38

39

40

1

2

R48

R57

100 k

0.05 

1 

1/10 W

1/4 W

±1% ThickFilm

±5% ThickFilm

±1% ThickFilm

±5% ThickFilm

±1% ThickFilm

±5% ThickFilm

±1% ThickFilm

R0603

R0805

R0603

R1206

R0603

CR0603-10W-1003F

LCR0805-R050J

Venkel

R59

1/10 W

1/4 W

CR0603-10W-1R00F

CR0603-10W-2000J

CR0603-10W-1331F

CR1206-8W-1R6J

CR0603-10W-6810F

R101

200 

1.33 k

1.6 

R102

R103, R105

11 R155, R156,

R157, R158,

R159, R160,

R161, R162,

R163, R169,

R170

681 

1/10 W

Rev. 0.7

21

Si2493/57/34/15/04

Global ISOmodem-EVB

Table 5. Si24xx Motherboard Bill of Materials (Continued)

Item Qty

Ref

Value

Rating Voltage Tol

Type

PCB Footprint

Mfr Part Number

Mfr

41

3

R172, R173,

R174

20.0 k

1/16 W

±1% ThickFilm

R0603

CR0603-16W-2002F

Venkel

42

43

1

R175

S1

0

2 A

ThickFilm

Tactile

R1206

CR1206-4W-000

101-0161-EV

Venkel

SW PUSH- 50 mA 12 Vdc

BUTTON

SW4N6.5X4.5-

PB

Mountain

Switch

44

10

TP5, TP6,

TP16, TP17,

TP19, TP20,

TP21, TP22,

TP23, TP24

BLUE

Loop

TESTPOINT

151-205-RC

Kobiconn

45

4

TP7, TP8,

TP9, TP25

Turret

RED

Turret

TP[12594]

2551-2-00-44-00-00-07-0

Mill-Max

46

47

1

TP11

U3

Loop

LDO

TESTPOINT

SOT223

151-207-RC

Kobiconn

LT1963A-

3.3 V

1.5 A

max

LT1963AEST-3.3#PBF

Linear Tech-

nologies

48

49

1

U5

EEPROM

32K

Serial

LDO

TSSOP8N6.4P0.

65

25LC320A-I/ST

LM2937ES-5.0

Microchip

Technology

U10

5

0.5 A

max

TO263-3N

National

Semiconduc-

tors

50

51

1

U11

U12

MAX3237

CP2102

5.5 V

3.3 V

RS232

MCU

TSSOP

MAX3237EIPWR

CP2102-GM

TI

QFN28N5X5P0.

5

SiLabs

52

53

54

55

2

1

U13, U14

U18

IDT74CBT

LV3257

TSSOP-16

IDT74CBTLV3257

DS1818-10

IDT

DS1818

10%

SOT-23

Dallas Semi-

conductor

U26

74LCX541

Buffer

TSSOP20N6.4P

0.65

74LCX541MTC

LM4819M

Fairchild

U27

LM4819 350 mW

SO8N6.0P1.27

National

Semiconduc-

tor

Unpopulated Components

56

1

J7

2MM, RT

ANG

SHROUD CONN1X5-S5B-

S5B-PH-SM4-TB

JST

ED

±1% ThickFilm

ThickFilm

PH-SM4-TB

1

R39

10 k

1/10 W

1 A

R0603

CR0603-10W-1002F

CR0603-16W-000

Venkel

R108

0

R0603

22

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

Rev. 0.7

23

Si2493/57/34/15/04

Global ISOmodem-EVB

24

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

Rev. 0.7

25

Si2493/57/34/15/04

Global ISOmodem-EVB

26

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

Rev. 0.7

27

Si2493/57/34/15/04

Global ISOmodem-EVB

28

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

Rev. 0.7

29

Si2493/57/34/15/04

Global ISOmodem-EVB

30

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

Rev. 0.7

31

Si2493/57/34/15/04

Global ISOmodem-EVB

32

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

6. Complete Design Package on CD

(See Sales Representative for

Details)

Silicon Laboratories can provide a complete design

package of the Si2493/57/34/15/04-EVB including the

following:

 OrCad Schematics

 Gerber Files

 BOM

 Documentation

Contact your local sales representative or Silicon

Laboratories

information.

headquarters

sales

for

ordering

Rev. 0.7

33

Si2493/57/34/15/04

Global ISOmodem-EVB

DOCUMENT CHANGE LIST

Revision 0.2 to Revision 0.3

 Updated Figure 15, “Daughter Card Secondary Side

Silkscreen,” on page 24.

 Updated Figure 16, “Daughter Card Primary Side

Layout,” on page 25.

 Updated Figure 17, “Daughter Card Secondary Side

Layout,” on page 26.

 Updated “Bill of Materials: Si24xx Daughter Card” .

Revision 0.3 to Revision 0.4

 Changed from Rev.1.0 to Rev.1.1 Daughter Card.

Revision 0.4 to Revision 0.5

 Changed from Rev.3.1 to Rev.3.2 Motherboard.

Revision 0.5 to Revision 0.6

 Changed from Rev.1.1 to Rev.1.2 Daughter Card.

 Added FS (SOIC) Package Option.

Revision 0.6 to Revision 0.7

 Changed R1.2 to 2.0 daughtercard.

 Changed R32 to 5.0 motherboard.

 Changed power amplifier chip and speakers.

 Removed connector to SSI BUS.

 Changed regulator and power on reset circuit.

 Changed various jumper locations.

34

Rev. 0.7

Si2493/57/34/15/04

Global ISOmodem-EVB

NOTES:

Rev. 0.7

35

Si2493/57/34/15/04

Global ISOmodem-EVB

CONTACT INFORMATION

Silicon Laboratories Inc.

400 West Cesar Chavez

Austin, TX 78701

Tel: 1+(512) 416-8500

Fax: 1+(512) 416-9669

Toll Free: 1+(877) 444-3032

Please visit the Silicon Labs Technical Support web page:

https://www.silabs.com/support/pages/contacttechnicalsupport.aspx

and register to submit a technical support request.

The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice.

Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from

the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features

or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, rep-

resentation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories 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 conse-

quential or incidental damages. Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to

support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where per-

sonal injury or death may occur. Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized ap-

plication, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages.

Silicon Laboratories, Silicon Labs, and ISOmodem are trademarks of Silicon Laboratories Inc.

Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.

36

Rev. 0.7


型号：	CR2010-2W-3651F
厂家：	SILICON
描述：	Evaluation Board Rev 5.0 for the Si2493/57/34/15/04 评估板5.0版本的Si2493 / 57 /34/ 15/ 04
文件：	总36页 (文件大小：684K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

CR2010-2W-3651F [SILICON]

相关型号：

SI9130DB

SI9135LG-T1

SI9135LG-T1-E3

SI9135_11

SI9136_11

SI9130CG-T1-E3

SI9130LG-T1-E3

SI9130_11

SI9137

SI9137DB

SI9137LG

SI9122E