Rev. 0.6 2/05 Copyright © 2005 by Silicon Laboratories Si2493/57/34/15/04-EVB
Si2493/57/34/15/04
Global ISOmodem-EVB
Evaluation Board for the Si2493/57/34/15/04
with a UART Interface
Description
The global Si2493/57/34/15/04-EVB evaluation board
provides the system designer an easy way of evaluating
the Si2493/57/34/15/04 ISOmodem®. The 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 Si2 493/57/
34/15/04 ISOmodem eliminates the need for a sepa rate
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. A direct access header (JP3) 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.
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 (J3) or a standard
2 mm power jack (J4). Alternatively, power can be
supplied through the USB inter face (whether the USB or
RS232 interface is used). The evaluation board can
drive an external speaker for call monitoring or the
piezoelectric speaker mounted directly on the board.
Please note that the PCM interface, parallel interface,
and EEPROM are available on the FT only. See
"1.7.EVB Part Numbers" on page 5 for ISOmodem EVB
options.
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
Piezoelectric speaker for call monitoring
Direct access to Si2493/57/34/15/04 for embedded
application evaluation
Easy power connec tion to co mm o n 7. 5 V–13.5 V
power supplies or USB port.
9 V ac adaptor
Support for daisy chain operation with Si3000 voice
codec (FT only)
Simple installation and operation
EEPROM (FT only)
Functional Block Diagram
Si2493/57/34/15/04
Push Button
Reset
RESET XTALIXTALO
Si3018* Interface
Circuit RJ-11
phone
line
Audio
Amplifier
AOUT
Audio
Out
Direct
Access HDR
PCM
Interboard
Connector
PCM Data/
Control
Daughter Board Boundary
Power-On
Reset
Rectifier
Filter
7.5–13.5 V dc or
peak ac
RS-232
Transceivers
UART DB9
Interface
Selection
Jumpers
Voltage
Regulator 3.3 V
5 V
9 V dc at 300 mA ac
Adaptor
USB
Connector USB I/F
*Si3010 for Si2404
Si2493/57/34/15/04
2 Rev. 0.6
1. Si2493/57/34/15/04-EVB Setup and
Evaluation
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.
1.1. Si2493/57/34/15/04-EVB Quick S tart—
RS-232 Interface
1. Set jumpers according to Figure 1 or Figure 2.
2. Connect:
DB-9 to PC COM 1 (with a pass-through cable).
RJ-11 to phone line or test box.
9 V ac adaptor (or USB cable).
3. Bring up:
T urn on power to modem.
Autobaud automatically adjusts modem DTE speed and
protocol.
4. Type “AT” followed by a carriage re turn.
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 or Figure 4.
2. Connect:
USB cable to PC
RJ-11 to phone line or test box
3. Download USB driver for your operating system from the
CD supplied with the ev al uation 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”.
1.3. Jumper Settings
Check all jumper settings on the Si2493/57/34/15/04-
EVB before applying power. The standard factory
jumper settings for the FT package are shown in
Figure 1; the FS package is shown in Figure 2. These
settings configure the Si2493/57/34/15/04-EVB for RS-
232 serial operation with autobaud. Any standard
terminal program configured to communicate through a
PC COM port can be used to communicate with the
Si2493/57/34/15/04-EVB. The standard factory jumper
settings for USB operation with the FT package are
shown in Figure 3; the FS package is shown in Figure 4.
The only difference between RS-232 and USB jumper
settings is that JP5 must be installed to enable USB.
Figure 1. Standard Factory Jumper Settings—RS-232 Interface (Outlined in Gray) (FT Option)
Si2493/57/34/15/04
Rev. 0.6 3
Figure 2. Standard Factory Jumper Settings—RS-232 Interface (Outlined in Gray) (FS Option)
Figure 3. S tandard Factory Jump er Settings—USB Interface (Outlined in Gray) (FT Option)
Si2493/57/34/15/04
4 Rev. 0.6
Figure 4. Standard Factory Jumper Settings—USB Interface (Outlined in Gray) (FS Option)
1.4. Power Requirements
The Si2493/57/34/15/04-EVB has an on-board diode
bridge, filter capacitor, and voltage regulator (U1).
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 at
least 100 mA. (Additional current may be required if a
speaker is connected for monitoring call progress
tones.) Power may be applied to the Si2493/57/34/15/
04-EVB through the screw terminals (J3), the 2 mm
power jack (J4), or the USB cable (even if the modem is
configured for RS-232 operation). The onboard full-
wave rectifier and filter ensure the correct polarity is
applied to the Si2493/57/34/15/04-EVB. Daughter card
power is supplied through voltage regulator U2 by
connecting JP7, pins 1 and 2. Daughter card current
can be measured by connecting an ammeter between
JP7, pins 1 and 2. Failure to connect pins 1 and 2 of
JP7 through either a jumper or a low-impedance
ammeter may result in damage to the Si2493/57/34/15/
04-EVB.
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), ph one line , and p ower. 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 bit s.
If JP9 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.
1.6. Making Connections
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.
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
Si2493/57/34/15/04
Rev. 0.6 5
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
establishe d, a “CONNECT” message appear s 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 “AT O” to return to
the data mode. After the ATO command, the modem
resumes the data connection and no longer accepts AT
commands.
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 pa ckage (FS–Lead -free,
16-pin SOIC; FT–Lead-free, 24-pin TSSOP). The final
two numbers indicate the line-side device . See Figure 5.
Figure 5. EVB Part Number Example
2. Si2493/57/34/15/04-EVB
Functional Description
The Si2493/57/34/15/04-EVB is a multipurpose
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-23 2 transce ive rs 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.
The Si24xxURT-EVB motherboard connects to the
daughter card through two connectors, JP1 and JP2.
JP1 is an 8x2 socket 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 JP1 (daughter card
interface) are LVCMOS and TTL compatible. The
Si2493/57/34/15/04 daughter card must be powered by
3.3 V. The motherboard is factory configured for 3.3 V
with JP7. JP2 is a 4x1 socket providing connection
between the daughter card and the RJ-11 phone jack.
2.1.1. Voltage Regulator/Power Supply
The input voltage to either J3 or J4 must be between 7.5
and 13.5 V dc or 7.5 and 13.5 VPEAK ac. The
motherboard includes a diode bridge (D1–D4) to guard
against a polarity reversal of the dc voltage or to rectify
an ac voltage. The power source must be capable of
continuously supplying at least 100 mA. C6 serves as a
filter cap for an ac input. The voltage regulator, U1,
provides 5 V for the motherboard and the input for
voltage regulator U2, which outputs 3.3 V for use on the
motherboard and to p ower the dau ghter card. Si24xxDC
power consumption can be measured by placing a
meter between pins 1 and 2 of JP7. The connection
between JP7 pins 1 and 2 must be made at all times
when power is applied to the evaluation board either
through a jumper block or a low-impedance meter to
avoid damage to the daughter card. Power is supplied
to U2 through D5 from the USB.
2.1.2. Reset Circuitry
The Si2493/57/34/15/04 requires a reset pulse to
remain low for at least 5.0 ms after the power supply
has stabilized during the powerup sequence or for at
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
Si2493/57/34/15/04 operation modes, including
powerdown, require a hardware reset to recover.
The Si2493/57/34/15/04-EVB contains two reset
options, an automatic power-on reset device, U3
(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. See
Si2457FS18-EVB
LS Part N um ber (S i30xx)
SS Package
SS Part Number
Si2493/57/34/15/04
6 Rev. 0.6
Figure 13 on page 17 and Figure 15 on page 19 for the
reset circuit schematic.
2.1.3. DS1818
The DS1818 is a small, low-cost device that monitors
the voltage on VD and an external reset pushbutton. If
VD drops below 3.0 V, the DS1818 provides a 220 ms
active-low reset pulse. On powerup, the DS1818 also
outputs an active low reset pulse for 220 ms after VD
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.
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. If S1 is used in
conjunction with U3, pressing S1 activates the reset
monitor in the DS1818 and produces a 220 ms active
low reset pulse.
2.1.5. EEPROM Enable (FT Only)
Connecting JP10 enables the optional EEPROM, U9.
See “AN93: Si2457/Si2434/Si2415/Si2404 Modem
Designer’s Gu ide” for programming details.
2.1.6. Interface Selection
The serial interface of the Si2493/57/34/15/04-EVB can
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
program, su ch as Hype rTerm or ProComm.
Jumper settings determine how the Si2493/57/34/15/
04-EVB is connected to the DTE. Table 1 lists the
interface controlled by each motherboard jumper. See
Figure 14 on page 18 and Figure 24 on page 28.
2.1.7. RS-232 Interface
This operation mode uses the standard factory jumper
settings illustrated in Figure 1 on page 2. The Maxim
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 st andard. 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
Si2493/57/34/15/04-EVB serial interface (DB9
connector) are listed in Table 2.
2.1.8. USB Interface
The USB cable connects to J5 on the motherboard and
provides both data and power. Installing a jumper on
JP5 enables the USB inter face and disable s the RS-232
interface. The USB interface is provided by U5. A USB
driver for this chip is available for most PC and MAC
operating systems on the CD.
2.1.9. Direct Access Interface
The motherboard supplies power through J3, J4, or
USB, power-on reset, and an RJ-11 jack for the modem.
The direct access interface (JP3) is used to connect the
motherboard to an embedded system. JP3 provides
access to all Si2493/57/34/15/04 signals available on
the daughter card. It is necessary to install a jumper on
JP8 to disable both the RS-232 and USB interface and
prevent signal contention. Leave the jumper between
JP7 pins 1 and 2. Figures 6 and 7 illustrate the jumper
settings required for the direct access mode using the
motherboard.
Table 1. Interface Selection Jumpers
Jumper Function
JP1 Daughter Card Digital Connector.
JP2 Daughter Card Phone Line Connector.
JP3 Direct Access Header.
JP4 PCM Interface.
JP5 USB Enable (RS-232 Disable).
JP6 Options.
JP7 3.3 V Power for Daughter Card.
JP8 Disable both RS-232 and USB.
JP9 Autobaud disable.
JP10 EEPROM enable.
JP11 Enable 27 MHz Clock option.
JP12 Not used.
JP13 On-board speaker enable.
Si2493/57/34/15/04
Rev. 0.6 7
2.1.10. PCM Int erfac e (F T Onl y)
The Si2493/57/34/15/04 PCM interface is available on JP4. Table 3 lists the pin connections for JP4 designed to
connect directly to the Si3000SSI-EVB JP6.
Table 2. DB9 Pin Connections
J1 Name J1 Symbol J1 Pin Si2493/57/34/15/04
Pin Si2493/57/34/15/04
Name
Carrier Detect CD 1*See note DCD/EESD
Received Data RXD 2 9 RXD
Transmit Data TXD 3 10 TXD
Data Terminal Re ad y DTR 4* See note ESC/RI
Signal Ground SG 5 6 GND
Data Set Ready DSR 6* See note INT/AOUT
Ready to Send RTS 7* See note RTS/RXCLK
Clear to Send CTS 8 11 CTS
Ring Indicator RD 9*17 RI
*Note: JP6 jumper option.
Table 3. JP 4 PCM Interface Pin Connections
JP 4 Pin Board Signal Si24xx Pin Si24xx Signal
1 CLKOUT_H 3 CLKOUT
2 TXCLK_H 4 FSYNC
3 GND 6, 20 GND
4 GND 6, 20 GND
5 RXCLK_H 24 SDO
6 EESD_H 18 SDI
7 RESETb 12 RESET*
8 3.3 V 5, 21 VD3.3
9 GND 6, 20 GND
10 VCC (+5 V)
Si2493/57/34/15/04
8 Rev. 0.6
Figure 6. Jumper Settings for Direct Access Interface (FT Option)
Figure 7. Jumper Settings for Direct Access Interface (FS Option)
Si2493/57/34/15/04
Rev. 0.6 9
The block diagram in Figure 8 shows how the two evaluation boards are connected to demonstrate voice mode
operation.
Figure 8. Connection Bloc k Diagram for Si3000SSI-EVB and Si24XXURT-EVB
2.1.11. Voice Mode
The Si3000 is used in conjunction with the Si2493/57/34/15/04 to transmit and receive 16-bit voice samples to and
from telephone lines as shown in Figure 9.
Figure 9. Voice Mode Block Diagram
Use telephone in off
hook position to emulate
600 Handset. Not all
handsets are
implemented as 2 wire
anymore.
Si24xx-EVB
Direct Connection
Connect the telephone to RJ11
(right side) on the Si3000
Daughterboard, NOT to the
RJ11 on motherboard. Look for
silk screen marking "HDST".
COM 1
Windows PC
WAN
Si3000 Daughterboard
Telephone
JP4
J
612V
GND
External
+12V
Supply
Si3000SSI-EVB Mot herboard
J6 of Daughterboard
Leave J3 unconn ec te d.
Power is provided
through JP 6 connector.
Note M1 and M0
jumper settings.
Power
Adapter
JP4
RS232 Si24xx-DC
J4
RJ11
Speaker Mic Line
In Line
Out
RJ11
JP6
SW3
JP4
SW2
JP5
12
21
J
3
Si2457 Modem
Si3000 Voice Codec
DAA
Handset
HOST
AT commands
Responses 2-wire
SDISDO
FSYNC MCLK
CLKOUT
SDI SDO
FSYNC
TDMA Interface
Si2493/57/34/15/04
10 Rev. 0.6
Figure 10 shows the actual circuit connection between the Si2493/57/34/15/04 and the Si3000.
Figure 10. Circuit Connection between the Si2493/57/34/15/04 and the Si3000
To use voice mode register U71 and data memory location 0x0059 must be properly configured.
Setting data memory 0x0059 = 0x0001 enables the Si24XX TDMA interface. When U71 is set to the value 0x0011
a 16-bit voice sample will be transm itted from the Si3000 through the Si2493/57/34/15/04 and DAA to the remote
device. Likewise, an analog signal from the remote device will pass through the DAA where it is converted to a 16-
bit voice sample, the Si24XX and finally the Si3000 where it is converted back to the analog receive signal.
In this example, the Si3000 has its digital TDMA interface configured as the Slave Serial Mode by adding a 50 k
pull-down resistor to SDO pin and a pull-up 50 k resistor to SCLK pin. In this mode, the Si3000’s MCLK is driven
by the 2048 kHz clock from Si2493/57/34/15/04. The FSYNC has an 8 kHz pulse input. The bit clock is 2048/
8 = 256 bits per frame sync. Refer to the Si3000 documentation for further details.
To send control information to the Si3000, the Si2493/57/34/15/04 modem chip provides a PCM control port
0x004B that allows th e user to send contro l words across by using the AT memory write command. Se e Table 4. for
details. Wait for the “OK” (approximately 300 ms after each com mand). When a connection is est a blished, the “ AT.”
command is used to generate the DTMF tone of a number; For example, AT.3<CR> will generate a number 3
DTMF tone without the need for an external DTMF generator. See “Voice Mode Example” for details.
TXD
ESC
RXD
INTb
CTSb
AOUT
RTSb
RIb
DCDb
SPKR_R
MIC_BIAS
HDST
XTALI
XTALO
C1A
C1B
SPKR_L
LINEO
LINEI
MIC_IN
RESETb
VDD
VDD
VDD
NOTE: D6 (PIN 4) MUST NOT HAVE PULLDOWN RESISTOR
C52
U3
Si2493/57/34/15/04
CLKIN/XTALI 1
XTALO 2
CLKOUT/EECS/A0
3
D6
4
VD3.3 5
GND
6
VDA
7
RTS/D7
8
VDB
19
GND
20 VD 3.3 21
C2A 13
C1A 14
ESC/D3
22 DCD/D4
23 EECLK/D5
24
CTS/CS
11
RXD/RD
9
TXD/WR
10
RESET
12
RI/D1
17
EESD/D2
18
AOUT/INT
15
INT/D0
16
Si3000
MCLK
7
SCLK
8
FSYNC
6
SDI
4
SDO
5
RESET 9
LINEI 11
MIC_BIAS
2
MIC_IN 10
LINEO 15
SPKR_L 16
SPKR_R
1
HDST
3
VD 12
VA 13
GND 14
R61
0
C51 C53
R62
47 k
C66
0.1 uF
C50
R63
47 k
C68
0.1 uF
Si2493/57/34/15/04
Rev. 0.6 11
Table 4. Voice Commands
AT Commands Purposes
AT:U71,11 Configure modem to send/receive data in linear mode to/from Si3000
interface
AT*Y254:W0059,7785 Enable Si2457 modem TDMA’s interface by settin g LSBit of memory
0x0059
AT*Y254:W0 04B,011C Write to Si3000 Control Reg1: Line Driver, Handset Driver, and Micro-
phone Bias Normal Operations ar e enabled.
AT*Y254:W004B,0200 Write to Si3000 Control Reg2: HPF enabled, PLL divided by 5, Digital
Loopback Off
AT*Y254:W004B,0300 Write to Si3000 Control Reg3: PLL Divider N1
AT*Y254:W0 04B,0400 Write to Si3 000 Control Reg4: PLL Divider M1
AT*Y254:W004B,055A Write to Si3000 Control Reg5: Line-In, Mic-In, Handset-In, FIR are acti-
vated.
AT*Y254:W004B,067F Write to Si3000 Control Reg6: Line-Out, Handset-Out are activated.
AT*Y254:W004B,075F Write to Si3000 Control Reg7: SPKR_L, SPLR_R are activated.
ATH1 Off-hook command for calling
AT.1 Dial individual number 1
AT.0 Dial individual number 0
AT.4 Dial individual number 4 and wait for answer
Si2493/57/34/15/04
12 Rev. 0.6
2.2. Voice Mode Example
Perform the following steps:
1. Connect hardware as shown in Figure 8 on page 9. Note that the Si3000 Evaluation Board requires an external 12 V supply
and derives 5 V power from the Si24xx-EVB. The Si24xx-EVB should be connected to the supplied power adapter or
powered through USB.
2. Enter the following AT commands to initialize the modem:
ATZ reset modem
ATE0 disable echo
AT:U0071,11 enable voice routing firmware
AT*Y254:W0059,7785 enable Si3000 Hardware Interface
In actual application, this line
must be implemented as a read-modify-
write consisting of the following:
n = AT*Y254:Q0059
n |= 1
AT*Y254:W0059,n
AT*Y254:W004B,011C Si3000 Reg 01 = 1C
This applies power to SPKRx,HDST,LINEO
AT*Y254:W004B,0545 Si3000 Reg 05 = 45
Enable HDST into ADC mixer
MIC input disabled
LINEI input disabled
AT*Y254:W004B,065D Si3000 Reg 06 = 6D
Activate HDST as output
Keep LINEO muted
0 db Receive Gain Setting
AT*Y254:W004B,075C Si3000 Reg 07 = 5C
0 dB Transmit Gain
Keep SPKRx muted
3. Type "ATDTnnn", where nnn represents the telephone number of the remote telephone.
4. The remote phone rings and should be picked up.
5. Also pick up the local phone connected to the Si3000 Evaluation Board.
6. At this point, a voice connection exists between the two telephones.
7. It is also possible to send a series of single digit DTMF tones to the remote phone using the "AT.N" command (dot character
is in-between "AT" and "N", where N is a DTMF digit 0-9,A-F).
Example:
AT.1 sends DTMF digit 1, return to voice mode.
Si2493/57/34/15/04
Rev. 0.6 13
2.2.1. Audio Output
Audio output is provided from the Si2457/34/15 on the
AOUT pin. 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
can be connected to an amplifier, such as the LM386
(the default stuffing option on the Si2457/34/15URT-
EVB), for 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.
2.2.2. Amplifier (LM386)
The audio amplifier circuit consists of U10 (LM386),
C20, R3, R4, C21, C22, C23, R5, C24, and an optional
loudspeaker, LS1. The LM386 has an internally-set
voltage gain of 20. R3 and R4 provide a voltage divider
to reduce the AOUT signal to prevent overdriving the
LM386. C20 provides dc blocking for the input signal
and forms a high-pass filter with R3+R4 while R4 and
C21 form a low-pass filter. These four components limit
the bandwidth of the AOUT signal. C22 provides high-
frequency power supply bypassing for the LM386 and
should be connected to a hard ground and located very
close to the amplifier’s power supply and ground pins.
C23 and R5 form a compensation circuit to prevent
oscillation of the high current PNP transistor in the
LM386 output stage on negative signal peaks. These
oscillations can occur between 2–5 MHz and can pose
a radiation compliance problem if C23 and R5 are
omitted. C24 provides dc blocking for the output of the
LM386, which is biased at approximately 2.5 V (VCC/2),
and forms a high-pass filter with the impedance of the
loudspeaker (LS1). The outpu t from the LM386 amplifier
circuit is available on the RCA jack, J2 (not installed).
Install jumper JP13 to enable the on-board speaker,
LS1.
2.3. Modem Module Operation
The Si2457/34/15URT-EVB daughter card is a complete
modem solution perfe ctly suited for use in an e mbedded
system.
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 pro vide the prope r power- on reset pulse
to the daughter card if it is used in the stand-alone
mode.
2.3.1. Reset Requirements
The Si2457/34/15 ISOmodem® daughter card must be
properly reset at powerup. The reset pin (pin 8) of the
Si2457/34/15 (JP1, 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.
2.3.2. 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 capa citors, must also be taken into account.
2.3.3. 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 pr otection/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.
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.
Si2493/57/34/15/04
14 Rev. 0.6
RXCLK
DCDb
ESC
AOUT
RXD
RESETb
XTALI
XTALO
XTALI
XTALO
RXD
RTSb
RESETb
DCDb
RXD
TXCLK
RTSb
INTb
ESC
RIb
EESD
AOUT
CLKOUT
CLKOUT
TXD
TXD
CTSb
CTSb
TXD
CTSb
VDA
VDA
TXCLK
RXCLK
RXCLK
EESD
RIb
AOUT
TXCLK
INTb
ESC
RESETb
DCDb
DCDb
INTb
RIb
AOUT
EESD
VDD
VDD
VDD
C1A
C2A
C1A
C2A
TIP
RING
C1A
C2A
Overlap the 16-pin SOIC and 24-pin TSSOP
TXD
GPIO5/RIb/TXCLK
-
RXD
CTSb
Si2401
GPIO3/ESC
-
GPIO2/DCDb
RESETb
-
GPIO1/EOFR/RXCLK
-
"Si24xx2G-DC Rev. 1.0 ISOmodem TM"
-
These components
for internal
Silabs use only.
GPIO4/INTb/AOUT
JP1 Function
Pin
1
3
5
7
9
11
13
2
4
8
10
12
14
16
These components
for internal
Silabs use only.
R20
R23
C41
R18
1.3 k
C52
C51
R19
0
JP2
C40
U3
CLKIN/XTALI 1
XTALO 2
CLKOUT/A0/EECS
3
alt_RI/D6/TXCLK
4
VD3.3 5
GND
6
VDA
7
RTS/D7
8
VDB
19
GND
20 VD 3.3 21
C2A 13
C1A 14
ESC/D3
22 DCD/D4
23 EECLK/D5/RXCLK
24
CTS/CS/ALE
11
RXD/RD
9
TXD/WR
10
RESET
12
RI/D1
17
EEIO/D2
18
AOUT/INT
15
INT/D0
16
C50
C55
Y1
12
R21
C53
U1
Si2401
CLKIN/XTALI 1
XTALO 2
GPIO5/RI/TXCLK
3
VD3.3 4
RXD
5
TXD
6
CTS
7
RESET
8
C2A 9
C1A 10
GPIO4/INT/AOUT
11
GND
12
VA
13
GPIO3/ESC
14 GPIO2/CD
15 GPIO1/EOFR/RXCLK
16
+
C54
R22
JP1
HEADER 8X2
1
3
5
7
9
11
13
15
2
4
6
8
10
12
14
16
C56
FB5
Figure 11. Si2493/57/34/15/04 Schematic
Si2493/57/34/15/04
Rev. 0.6 15
C1A
C2A
RING
TIP
R30, R31, R32, R33, C30 and C31
are an optional CID population
No Ground Plane In DAA Section
Bias
Ring Detect/CID
Hookswitch
DC Term
R4
Q2
Q3
R13
R16
R11
C9
C7
R5
R1
C10
R2
R10
Q4
R12
FB2
C5
R8
+
C4
RV1
Q5
C2
U2
Si3010/18
QE 1
DCT 2
RX 3
IB
4
C1B
5
C2B
6
VREG
7
RNG1 8
DCT2 16
IGND
15
DCT3 14
QB 13
QE2 12
SC
11
VREG2
10 RNG2 9
C6
-+
D1
Z1
C1
C8
Q1
R3 R15
C3 FB1
R6
R7
R9
Figure 12. Si3018/10 DAA Schematic
Si2493/57/34/15/04
16 Rev. 0.6
4. Bill of Materials: Si24xx Daughter Card
Value Rating Tolerance Foot Print Dielectric Manufacturer Number Manufacturer
1 2 C2,C1 33 pF Y2 ±20% 1808 X7R GA342D1XGF330JY02L Murata
2 1 C3 10 nF 250 V ±20% 0805 X7R C0805X7R251-103MNE Venkel
3 1 C4 1.0 uF 50 V ±20% Size A Al
Electrol
y
tic
NACE1R0M50V NIC Components
4 3 C5,C6,C50 0.1 uF 16 V ±20% 0603 X7R C0603X7R160-104MNE Venkel
5 1 C7 2.7 nF 50 V ±20% 0603 X7R C0603X7R500-272MNE Venkel
6 2 C9,C8 680 pF Y3 ±10% 1808 X7R GA342QR7GD681KW01L Murata
7 1 C10 0.01 uF 16 V ±20% 0603 X7R C0603X7R160-103MNE Venk el
8 2 C41,C40 33 pF 16 V ±5% 0603 NPO C0603NPO160-330JNE Venkel
9 1 C51 0.22 uF 16 V ±20% 0603 X7R C0603X7R160-104MNE Venkel
10 1 C54 1.0 uF 10 V ±10% Case A Tant TA010TCM105-KAL Venkel
11 1 D1 HD04 400 V Mini-DIP HD04-T Diodes, Inc.
12 2 FB1,FB2,FB5 Ferr ite Bead 0603 BLM18AG601S MuRata
13 1 JP1 HEADER 8X2 2x8 Surface Mount
Header, .1 space
TSM-108-01-T-DV Samtec
14 1 JP2 4X1 Header_0 CONN1X4-100-
SMT
68000-403 Berg
15 2 Q3,Q1 NPN 300 V SOT-23 MMBTA42LT1 OnSemi
16 1 Q2 PNP 300 V SOT-23 MMBTA92LT1 OnSemi
17 2 Q4,Q5 NPN 80 V SOT-23 MMBTA06LT1 OnSemi
18 1 RV1 SiDactor 275 V 100 A SOD 6 P3100SB Teccor
19 1 R1 1.07 K 1/2 W ±1% 1210 CR1210-2W-1071FT Venkel
20 1 R2 150 1/16 W ±5% 0402 CR0402-16W-150JT Venkel
21 1 R3 3.65 K 1/2 W ±1% 1210 CR1210-2W-3651FT Venkel
22 1 R4 2.49 K 1/2 W ±1% 1210 CR1210-2W-2491FT Venkel
23 2 R5,R6 100 K 1/16 W ±5% 0402 CR0402-16W-104JT Venkel
24 2 R8,R7 20 M 1/8 W ±5% 0805 CR0805-8W-206JT Venkel
25 1 R9 1 M 1/16 W ±1% 0402 CR0402-16W-1004FT Venkel
26 1 R10 536 1/4 W ±1% 1206 CR1206-4W-5360FT Venkel
27 1 R11 73.2 1/2 W ±1% 1210 CR1210-2W-73R2FT Venkel
28 4 R12,R13,R15,R16 0 1/16 W ±1% 0603 CR0603-16W-000F Venkel
29 1 U3 Si24xx 24pin TSSOP Silicon Laboratories
30 1 U2 Si3018/10 16pin SOIC Si3018/10-FS Silicon Laboratories
31 1 Y1 4.9152Mhz
20pF load,
150 ESR
50 ppm ATS-SM 559-FOXSD049-20 CTS Reeves
32 1 Z1 43 V 1/2 W SOD-123 MMSZ43T1 OnSemi
Non-installed Components
33 2 C31,C30 120pF 250 V ±10% 0805 X7R C0805X7R251-121KNE Venkel
34 2 C55,C56 0.1 uF 10 V ±20% C0603 X7R C0603C124K Kemet
35 1 R18 1.3 k 1/16 W ± 5% RC0603 CR0603-16W-132JT Venkel
36 5 R19,R20,R21,R22,R23 0 1/16W ±5% RC0603 CR0603-16W-000J Venkel
37 2 R32,R30 15M 1/8 W ±5% 0805 CR0805-8W-156JT Venkel
38 2 R33,R31 5.1M 1/8 W ±5% 0805 CR0805-8W-515JT Venkel
39 1 C52 0.1 uF 16 V ±20% 0603 X7R C0603X7R160-104MNE Venkel
40 1 C53 0.22 uF 16 V ±20% 0603 X 7R C0603X7R160-104MNE Venkel
41 1 U1 Si2401 16p in SOIC Si2401-KS Silicon Laboratories
Item Quantit
y
Reference
Si2493/57/34/15/04
Rev. 0.6 17
TXCLK_H
RESETb
DCD_H
AOUT_H
DCD_HEESD_H TXCLK_H
RESETb
RESETb
EESD_H
AOUT_H
VD
+3.3V
+3.3V
VCC
VCC
VD
+3.3V
USB
RS-232
"7-12V AC or DC"
"RESET"
JP7 for measuring
current to modem (i.e.
VD goes to modem only)
"Mux off"
"USB"
Info
Info
Ctrl
Ctrl
Info GPIO4 or AOUT INT or AOUT nc or GPIO4
Table on silkscreen for JP6
RS-232 Si2400 only Si2456/57 Si2401
CD nc or GPIO2 DCD or EEIO GPIO2 or nc
RI GPIO3 or nc RI or TXCLK nc or GPIO5
DTR ESC or X GPIO3 or nc
RTS CLKOUT or nc RTS or RXCLK nc or GPIO1
DSR
Function
"RXD"
"TXD"
"CTSb"
"RESETb"
"RTSb"
"DCDb"
"INT"
"AOUT"
"RIb"
"ESC"
Place White Dot
Silkscreen Near
Pin 1
"CLKOUT"
"TXCLK"
"RXCLK"
"EESD"
GPIO1 or GPIO3
"Si2401: 1-2, 5-6, 7-8, 11-12, 14-15"
"Si2400: 2-3, 4-5, 8-9, 11-12, 13-14"
"Si24xx: 1-2, 4-5, 7-8, 10-11, 13-14"
"Si24xx alt: 1-2, 5-6, 7-8, 11-12, 14-15"
"JP6: recommended settings"
Place White Dot
Silkscreen Near
Pin 1
Right angle connector on board edge
Si24xx Reset Options
"AUTOBAUD" "EEPROM" "27MHz CLK"
"RING"
"TIP""PCM"
"EEPROM"
"Si2401 27MHz CLK"
Si2401 Reset Options
JP7
JP5
R9
0
B4 UART Mux
TXD_T
RTS_T
DTR_T
TXD_U
RTS_U
DTR_U
RXD_M
CTS_M
DSR_M
CD_M
RI_M
RXD_T
CTS_T
DSR_T
CD_T
RI_T
RXD_U
CTS_U
DSR_U
CD_U
RI_U
TXD_M
DTR_M
RTS_M
OE
S
JP11
R6 0
R11
10k
JP3
HEADER 8X2
1
3
5
7
9
11
13
15
2
4
6
8
10
12
14
16
R1
0
NI
JP13
JP6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R2
LS1
Speaker
B1
RS-232
RXD_T
CTS_T
RTS_T
DTR_T
DSR_T
CD_T
RI_T
TXD_R
DTR_R
DSR_R
RXD_R
RD_R
CD_R
CTS_R
TXD_TRTS_R
C32
J3 Power Connector
1
2
J5
USB Type B
1
2
3
4
5
R7 0
B2
USB
RXD_U
CTS_U
DSR_U
CD_U
RI_U
TXD_U
RTS_R
DTR_U
USB-
USB+
R12
10k
TP7
R8
1.3k
J4
2.1 mm Power jack
1
2
B5
Daughter Card Socket
RXD_H
CTS_H
RESET_H
RI_H
DCD_H
AOUT_H
RING
TIP
TXD_H
ESC_H
RTS_H
CLKOUT_H
INT_H
EESD_H
TXCLK_H
RXCLK_H
EESD_H
EECS_H
EECLK_H
R10
10k
S1
SW PUSHBUTTON
B6
Speaker
AOUT SPEAKER
J1
DB9-RS232_1
CD(o)
1
RXD(o)
2
TXD(i)
3
DTR(i)
4
SG
5
DSR(o) 6
RTS(i) 7
CTS(o) 8
RD(o) 9
M2
11
M1
10
J2
RCA JACK
NI
R27 0
JP4
HEADER 5X2
1 2
3 4
5 6
7 8
9 10
R28
10k
JP9
JP8
U9
CS
1
SDO 2
SDI
5
HOLD
7
SCLK
6
WP
3
VCC
8
TP8
B3 PowerBlock
V1
V2
USB_+5
RESET
RJ11
1
2
3
4
5
6
7
8
9
10
11
12
JP10 JP12
Figure 13. Motherboard Top-level Schematic
Si2493/57/34/15/04
18 Rev. 0.6
RESET_H
RI_H
DCD_H
AOUT_H
RING
TIP
TXD_H
CLKOUT_H
INT_H
EESD_H
TXCLK_H
RXCLK_H
ESC_H
RXD_H
CTS_H
RTS_H
EECS_H EECLK_H
VD
VD
Place White Dot
Silkscreen Near Pin 1
TIP and RING minimum 20 mils wide and as far as possible from ground.
Connectors for ISOModem module.
TXD
GPIO3
RXD
NC
CTS
NC
RESET
GND
NC
VD
GPIO4
GPIO5
NC
NC
Si2401
GPIO2
GPIO1
TXD/WR
ESC/D3
RXD/RD
EESD/D2
CTS/CS
RI/D1
RESET
GND
INT/D0
VD
AOUT/INT
alt_RIb/TXCLK/D6
RTS/D7
CLKOUT/A0/EECS
Si24xx
DCD/D4
EECLK/D5/RXCLK
TXD
GPIO1
RXD
GPIO2
CTS
GPIO3
RESET
GND
GPIO4
VD
AOUT
15
16
13
14
11
12
9
10
7
8
6
NC
NC
CLKOUT
Si2400
1
NC
3
4
5
Net names correspond to
Si24xx. See table for
Si2400 equivalents
2
Table NOT on silkscreen
NC
JP1/3
R17
10k
JP2
JP1
SOCKET 8X2
1
3
5
7
9
11
13
15
2
4
6
8
10
12
14
16
R26
1.3k
+
C3
1.0 uF C4
470 pF
FB2
+
C1
1.0 uF
C2
470 pF
Figure 14. Daughter Card Interface Schematic
Si2493/57/34/15/04
Rev. 0.6 19
V1
V2
USB_+5
RESET
VCC
VD
+3.3V
USB_VCC
OPTIONAL
"GND"
"GND"
Standoffs in each corner of board.
"+5V"
"+3.3V"
"GND"
+
C6
470 uF
12
FB1
TP16
TP1
U3
DS1818
VCC
2
GND
3RST 1
C5
10 nF
D4
C10
10 uF
TP2
D1
C7
0.1 uF
C9
0.1 uF
TP6
C11
470 pF
D3
U1
7805
IN
1OUT 3
GND
2
R14
196k
TP4
U2
TPS77601DR
GND
1
EN
2
IN(1)
3
IN(2)
4
RESET/PG 8
FB/NC 7
OUT(1) 6
OUT(2) 5
TP18
TP3
C8
10 uF
R13
1.6
R16
110k
R15 0
D2
D5
BAT54C
TP17
TP5
Figure 15. Power Supply Schematic
Si2493/57/34/15/04
20 Rev. 0.6
RXD_T
CTS_T
DSR_T
CD_T
RI_T
TXD_T
RTS_T
DTR_T
RXD_R
CTS_R
CD_R
RD_R
DSR_R
DTR_R
RTS_R
TXD_R
VCC
VCC
C18
+
C15
1.0 uF
C17
+
C12
1.0 uF
D12
MMBZ15VDC
R33
10k
C14
0.1 uF
D13
MMBZ15VDC
C13
470 pF
D11
MMBZ15VDC
D8
MMBZ15VDC
D9
MMBZ15VDC
D7
MMBZ15VDC
U4
MAX3237
C2+ 1
C2- 3
C1+ 28
C1- 25
V+
27
V-
4
T1IN 24
T2IN 23
T3IN 22
T4IN 19
T5IN 17
R1OUTB 16
R1OUT 21
R2OUT 20
R3OUT 18
EN 13
GND
2
T1OUT
5
T2OUT
6
T3OUT
7
T4OUT
10
T5OUT
12
VCC 26
R1IN
8
R2IN
9
R3IN
11
MBAUD
15
SHDN
14
D6
MMBZ15VDC
R30
10k
R29
10k
C19
R32
10k
NI
C16
FB3
TP11
D10
MMBZ15VDC
TP10
R31
10k
NI
Figure 16. RS-232 Interface Schematic
Si2493/57/34/15/04
Rev. 0.6 21
Figure 17. Audio Amplifier Schematic
Figure 18. UAR T Mu x Schema ti c
SPEAKER
AOUT
VCC
C21
820 pF
R3
47 k R4
3 k
+
C24
100 uF
1 2
R5
10
C22
0.1 uF
C23
0.1 uF
C20
0.1 uF
+
-
U10
LM386M-1
3
2
5
6
1
4
8
7
TXD_T
RTS_T
DTR_T
TXD_U
RTS_U
DTR_U
O\E\
S
DSR_M
RXD_M
CD_M
RI_M
CTS_M
RXD_T
CTS_T
DSR_T
CD_T
RI_T
RXD_U
CTS_U
DSR_U
CD_U
RI_U
DTR_M
RTS_M
TXD_M
VCC
"CTS_T"
"RXD_T"
"RXD_U"
"CTS_U"
TP13
TP14
TP15
U8
74CBT3257/SO
1B1
2
2B1
5
3B1
11
4B1
14
1A 4
2A 7
3A 9
4A 12
1B2
3
2B2
6
3B2
10
4B2
13
OE 15
S1
R19
10k
U7
74CBT3257/SO
1B1
2
2B1
5
3B1
11
4B1
14
1A 4
2A 7
3A 9
4A 12
1B2
3
2B2
6
3B2
10
4B2
13
OE 15
S1
TP12
R18
10k
Si2493/57/34/15/04
22 Rev. 0.6
Figure 19. USB Interface Schematic
TXD_U
RTS_R
DTR_U
USB-
USB+
RXD_U
CTS_U
DSR_U
CD_U
RI_U
USB_VCC
U11
GMS05F
5
4
1
2
3
TP19
+
C29
1.0 uF
C31
R20
4.7 k
U5
CP2101/02
REGIN
7
VDD
6
GND
3
VBUS
8
D-
5
D+
4
CTS 23
RTS 24
RXD 25
TXD 26
DSR 27
DTR 28
DCD 1
RI 2
SUSPEND 11
SUSPEND 12
RST 9
Si2493/57/34/15/04
Rev. 0.6 23
5. Bill of Materials: Si24xx Motherboard
Value Rating Tolerance Foot Print Dielectric Manufacturer Number Manufacturer
1 5 C1,C3,C12,C15,C29 1.0 uF 10 V ±10% 3216_EIAA Tant TA010TCM105-KAL Venkel
2 4 C2,C4,C11,C13 470 pF 25V ±5% CC0805 X7R C0805C471J5GACTU TTI
3 1 C5 10 nF 16 V ±10% CC0603 X7R C0603X7R160-103KNE Venkel
4 1 C6 470 uF 25 V ±20% C5X10MM-RAD Electrolytic UVX1E471MPA NIC Components
5 2 C7,C9 0.1 uF 25 V ±10% CC0805 X7R C0805X7R250-104KNE Venkel
6 2 C10,C8 10 uF 16V ±10% CC1206 X7R C1206X7R100-106KNE Venkel
7 10 C14,C16,C17,C18,C19,C2
0,C22,C23,C31,C32
0.1 uF 16 V ±20% CC0603 X7R C0603X7R160-104MNE Venkel
8 1 C21 820 pF 50 V ±5% CC0805 NPO C0805COG500-821JNE Venkel
9 1 C24 100 uF 16 V ±10% C2.5X6.3MM-RAD Electrolytic UVX1C101MEA1TD Nichicon
10 4 D1,D2,D3,D4 DIODE 30 V 0.5 A SOD123 MBR0530T1 Motorola
11 1 D5 BAT54C SOT-23 BAT54C Diodes Inc.
12 8 D6,D7,D8,D9,D10,D11,D1
2,D13
MMBZ15VDC SOT-23 MMBZ15VDC General Semiconductor
13 3 FB1,FB2,FB3 Ferrite Bead RC0805 BLM21A601S Murata
14 1 JP1 SOCKET 8X2 CONN2X8 SSW-108-01-T-D Samtec
15 1 JP2 4X1 Socket CONN4[6238] SSW-104-01-T-S Samtec
16 1 JP3 HEADER 8X2 CONN2X8 517-6121TN Samtec
17 1 JP4 HEADER 5X2 CONN2X5[6238]RA TSW-105-25-T-D-RA Samtec
18 8 JP5,JP7,JP8,JP9,JP10,JP
11,JP12,JP13
2X1 Header CONN2[6040] 517-611TN Berg
19 1 JP6 3x5 Header CONN3X5
20 1 J1 DB9-RS232_1 CONN9[6543]DBF K22-E9S-030 Kycon
21 1 J2 RCA JACK CONN2[12090]RC
A
16PJ097 Mouser
22 1 J3 Power Connector TB2[12065]TSA 506-5ULD02 Mouser
23 1 J4 2.1 mm Power
jack
CONN3[175120]P
WR
ADC-002-1 Adam Tech
24 1 J5 USB Type B CONN-USB-B 897-30-004-90-000000 Mill-Max
25 1 LS1 Speaker HCM12A[9052] HCM1206A JL World
26 1 RJ11 MTJG-2-64-2-2-1 RJ11[6238]DUAL MTJG-2-64-2-2-1 Adam Tech
27 6 R2,R6,R7,R9,R15,R27 0 1/10 W RC0603 CR0603-10W-000JT Venkel
28 1 R3 47 k 1/10 W ±5% RC0805 NRC10J473TR NIC Components
29 1 R4 3 k 1/10 W ±5% RC0805 NRC10J302TR NIC Components
30 1 R5 10 1/10 W ±1% RC0805 NRC10F10R0TR NIC Components
31 2 R26,R8 1.3k 1/16 W ±5% RC0603 CR0603-16W-132JT Venkel
32 10 R10,R11,R12,R17,R18,R1
9,R28,R29,R30,R33
10k 1/16 W ±5% RC0603 CR0603-16W-103JT Venkel
33 1 R13 1.6 1/8 W -0.05 RC1206 CR1206-8W-1R6JT Venkel
34 1 R14 196k RC0805 MCHRIDEZHFX1963E Classic Comp
35 1 R16 110k RC0805 CR21-114J-T Classic Comp
36 1 R20 4.7 k 1/10 W ±5% RC0805 NRC10J472TR NIC Components
37 1 S1 SW
PUSHBUTTON
SW4[6240]PB 101-0161 Mouser
38 3 TP1,TP2,TP18 Black Test Point CONN1[6040] 151-203 Mouser
39 4 TP3,TP4,TP5,TP6 Stand off MH-125
40 8 TP7,TP8,TP10,TP11,TP12,
TP13,TP14,TP15
Blue Test Point CONN1[6040] 151-205 Mouser
41 2 TP16,TP17 Red Test Point CONN1[6040] 151-207 Mouser
42 1 TP19 Blue Test Point CONN1[6040] 151-207 Mouser
43 1 U1 7805 TO-220-LD uA7805CKC Texas Instruments
44 1 U2 TPS77601DR SO8 TPS77601DR Texas Instruments
45 1 U3 DS1818 SOT-23 DS1818-10 Dallas Semiconductor
46 1 U4 MAX3237 SOP65X780-28N MAX3237E (Sipex
SP3238E 2nd source)
Maxim
47 1 U5 CP2101/02 28-pin MLP CP2101/02 Silicon Laboratories
48 2 U8,U7 74CBT3257/SO SOP65X780-16N SN74CBT3257DBR Texas Instruments
49 1 U9 PDIP Socket DIP8-SKT 210-93-308-41-001000 Mill-Max
50 1 U10 OP-AMP SO8 LM386M-1 National Semi
51 1 U11 GMS05F SOT-23-5N GMS05F Vishay
Item Quantit
y
Reference
Si2493/57/34/15/04
24 Rev. 0.6
Figure 20. Daughter Card Component Side Silkscreen
Si2493/57/34/15/04
Rev. 0.6 25
Figure 21. Daughter Card Solder Side Silkscreen
Si2493/57/34/15/04
26 Rev. 0.6
Figure 22. Daughter Card Component Side Layout
Si2493/57/34/15/04
Rev. 0.6 27
Figure 23. Daughter Card Solder Side Layo ut
Si2493/57/34/15/04
28 Rev. 0.6
Figure 24. Motherboard Silkscreen
Si2493/57/34/15/04
Rev. 0.6 29
Figure 25. Motherboard Silkscreen (Back Side)
Si2493/57/34/15/04
30 Rev. 0.6
Figure 26. Motherboard Compon ent Layout
Si2493/57/34/15/04
Rev. 0.6 31
Figure 27. Motherboard Sold er Side Layout
Si2493/57/34/15/04
32 Rev. 0.6
Figure 28. Motherboard Ground Plane Layout
Si2493/57/34/15/04
Rev. 0.6 33
Figure 29. Motherboard Power Plane Layout
Si2493/57/34/15/04
34 Rev. 0.6
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
Please contact your local sales representative or Silicon Laboratories headquarters sales for ordering information.
Si2493/57/34/15/04
Rev. 0.6 35
DOCUMENT CHANGE LIST
Revision 0.2 to Revision 0.3
Updated Figure 21, “Daughter Card Solder Side
Silkscreen,” on page 25
Updated Figure 22, “Daughter Card Component
Side Layout,” on page 26
Updated Figure 23, “Daughter Card Solder Side
Layout,” on page 27
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
Disclaimer
Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers
using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific
device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories
reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy
or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply
or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific
written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected
to result in significant personal injury or death. Silicon Laboratories products are generally not intended for military applications. Silicon Laboratories products shall under no
circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons.
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SI2404FT10-EVB SI2415FS08-EVB SI2415FS18-EVB SI2415FT08-EVB SI2415FT18-EVB
