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(R). The Si2493/57/ 34/15/04-EVB consists of a motherboard with a power supply, an RS-232 and USB interface, other ease-ofuse 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. 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 interface (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 connection to common 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 PCM Data/ Control 9 V dc at 300 mA ac Adaptor 7.5-13.5 V dc or peak ac Rectifier Filter Voltage Regulator 3.3 V Audio Out Audio Amplifier Direct Access HDR Daughter Board Boundary 5V USB Connector UART PCM Interboard Connector USB I/F DB9 RS-232 Transceivers Interface Selection Jumpers AOUT Si2493/57/34/15/04 RESET XTALO Si3018* Interface Circuit RJ-11 phone line XTALI Push Button Reset Power-On Reset Rev. 0.6 2/05 *Si3010 for Si2404 Copyright (c) 2005 by Silicon Laboratories Si2493/57/34/15/04-EVB Si2493/57/34/15/04 1. Si2493/57/34/15/04-EVB Setup and 1.2. Si2493/57/34/15/04-EVB Quick Start-- USB Interface Evaluation 1. Set jumpers according to Figure 3 or Figure 4. 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. Si2493/57/34/15/04EVB 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 Start-- 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). to phone line or test box. 9 V ac adaptor (or USB cable). 3. Bring up: RJ-11 Turn on power to modem. automatically adjusts modem DTE speed and protocol. 4. Type "AT" followed by a carriage return. Autobaud Should echo "AT" and then an "OK". 2. Connect: USB cable to PC to phone line or test box 3. Download USB driver for your operating system from the CD supplied with the evaluation board. RJ-11 4. Install driver. 5. Bring up. Reset the modem. automatically adjusts modem DTE speed and Autobaud 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 Si2493/57/34/15/04EVB 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 RS232 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) 2 Rev. 0.6 Si2493/57/34/15/04 Figure 2. Standard Factory Jumper Settings--RS-232 Interface (Outlined in Gray) (FS Option) Figure 3. Standard Factory Jumper Settings--USB Interface (Outlined in Gray) (FT Option) Rev. 0.6 3 Si2493/57/34/15/04 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 fullwave 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), 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 4 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. 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 Rev. 0.6 Si2493/57/34/15/04 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 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 package (FS-Lead-free, 16-pin SOIC; FT-Lead-free, 24-pin TSSOP). The final two numbers indicate the line-side device. See Figure 5. Si2457FS18-EVB LS Part Number (Si30xx) SS Package SS Part Number Figure 5. EVB Part Number Example 2. Si2493/57/34/15/04-EVB Functional Description 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. 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 power the daughter 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-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(R). 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 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 Rev. 0.6 5 Si2493/57/34/15/04 Figure 13 on page 17 and Figure 15 on page 19 for the reset circuit schematic. Table 1. Interface Selection Jumpers Jumper 2.1.3. DS1818 Function 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. 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. 2.1.4. Manual Reset JP7 3.3 V Power for Daughter Card. 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. JP8 Disable both RS-232 and USB. JP9 Autobaud disable. JP10 EEPROM enable. JP11 Enable 27 MHz Clock option. JP12 Not used. 2.1.5. EEPROM Enable (FT Only) JP13 On-board speaker enable. Connecting JP10 enables the optional EEPROM, U9. See "AN93: Si2457/Si2434/Si2415/Si2404 Modem Designer's Guide" 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 Si2493/57/34/15/04EVB 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, such as HyperTerm 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. 6 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 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 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 interface and disables 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. Rev. 0.6 Si2493/57/34/15/04 2.1.10. PCM Interface (FT Only) 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 Carrier Detect CD 1* See note DCD/EESD Received Data RXD 2 9 RXD Transmit Data TXD 3 10 TXD Data Terminal Ready DTR 4* See note ESC/RI Signal Ground Si2493/57/34/15/04 Si2493/57/34/15/04 Pin Name 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) Rev. 0.6 7 Si2493/57/34/15/04 Figure 6. Jumper Settings for Direct Access Interface (FT Option) Figure 7. Jumper Settings for Direct Access Interface (FS Option) 8 Rev. 0.6 Si2493/57/34/15/04 The block diagram in Figure 8 shows how the two evaluation boards are connected to demonstrate voice mode operation. Si3000SSI-EVB Motherboard Si3000 Daughterboard JP5 1 2 J 3 Speaker SW2 Mic Line In Leave J3 unconnected. Power is provided through JP 6 connector. J6 of Daughterboard Line J Out 6 12V GND External +12V Supply JP4 JP4 2 Use telephone in off hook position to emulate 600 Handset. Not all handsets are implemented as 2 wire anymore. RJ11 SW3 1 JP6 Connect the telephone to RJ11 (right side) on the Si3000 Daughterboard, NOT to the RJ11 on motherboard. Look for silk screen marking "HDST". Note M1 and M0 jumper settings. Direct Connection Si24xx-EVB JP4 Power Adapter J4 RS232 Si24xx-DC RJ11 WAN COM 1 Telephone Windows PC Figure 8. Connection Block 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. AT commands HOST 2- wire Responses Si2457 Modem DAA FSYNC SDO SDI CLKOUT TDMA Interface FSYNC SDO SDI MCLK Handset Si3000 Voice Codec Figure 9. Voice Mode Block Diagram Rev. 0.6 9 Si2493/57/34/15/04 Figure 10 shows the actual circuit connection between the Si2493/57/34/15/04 and the Si3000. VDD C52 5 21 C50 INTb RIb 24 23 22 15 4 16 17 18 3 8 9 10 11 RESETb 12 CLKIN/XTALI XTALO 1 XTALI 2 XTALO INT/D0 RI/D1 EESD/D2 CLKOUT/EECS/A0 C1A RTS/D7 RXD/RD TXD/WR CTS/CS C2A RESET 6 20 7 19 RTSb RXD TXD CTSb EECLK/D5 DCD/D4 ESC/D3 AOUT/INT D6 14 C1A 13 C1B GND GND VDA VDB DCDb ESC AOUT U3 VD3.3 VD 3.3 N O T E : D6 (PIN 4) MUST NOT HAVE PULLDOWN RESISTOR Si2493/57/34/15/04 C51 C53 VDD C66 R61 0 C68 0.1 uF SPKR_R 1 MIC_BIAS 2 HDST 3 4 VDD R62 47 k 5 R63 47 k 6 7 8 SPKR_R MIC_BIAS HDST SPKR_L LINEO GND SDI VA SDO VD FSYNC LINEI MCLK MIC_IN SCLK RESET 16 15 0 . 1 uF SPKR_L LINEO 14 13 12 11 LINEI 10 M I C _IN 9 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 transmitted 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 16bit 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 the user to send control words across by using the AT memory write command. See Table 4. for details. Wait for the "OK" (approximately 300 ms after each command). When a connection is established, 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. 10 Rev. 0.6 Si2493/57/34/15/04 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 setting LSBit of memory 0x0059 AT*Y254:W004B,011C Write to Si3000 Control Reg1: Line Driver, Handset Driver, and Microphone Bias Normal Operations are 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:W004B,0400 Write to Si3000 Control Reg4: PLL Divider M1 AT*Y254:W004B,055A Write to Si3000 Control Reg5: Line-In, Mic-In, Handset-In, FIR are activated. 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 Rev. 0.6 11 Si2493/57/34/15/04 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-modifywrite 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. 12 Rev. 0.6 Si2493/57/34/15/04 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 Si2457/34/15URTEVB), 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. 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. 2.3.1. Reset Requirements The Si2457/34/15 ISOmodem(R) 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. 2.2.2. Amplifier (LM386) 2.3.2. Crystal Requirements 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 highfrequency 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 output from the LM386 amplifier circuit is available on the RCA jack, J2 (not installed). Install jumper JP13 to enable the on-board speaker, LS1. 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. 2.3. Modem Module Operation The Si2457/34/15URT-EVB daughter card is a complete modem solution perfectly suited for use in an embedded system. 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 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. 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. Rev. 0.6 13 + Pin 1 3 5 7 9 11 13 2 4 8 10 12 14 16 1.3 k R18 FB5 C55 Si2401 GPIO5/RIb/TXCLK RXD TXD CTSb RESETb GPIO1/EOFR/RXCLK GPIO2/DCDb GPIO3/ESC GPIO4/INTb/AOUT JP1 Function C54 VDD C56 CLKOUT TXCLK RTSb RXD TXD CTSb RESETb 2 4 6 8 10 12 14 16 HEADER 8X2 1 3 5 7 9 11 13 15 JP1 ESC EESD RIb INTb AOUT RXCLK DC Db 5 6 7 8 RXD TXD CTSb RESETb 16 17 18 INTb RIb EESD Si2401 RESET RXD TXD CTS VDA C2A C1A GPIO1/EOFR/RXCLK GPIO2/CD GPIO3/ESC XTALO GPIO4/INT/AOUT GPIO5/RI/TXCLK C51 9 10 2 1 12 RESETb VDD RESET RTS/D7 RXD/RD TXD/WR CTS/CS/ALE CLKOUT/A0/EECS VDA 13 14 2 1 C53 C2A C1A EECLK/D5/RXCLK DCD/D4 CLKIN/XTALI ESC/D3 AOUT/INT alt_RI/D6/TXCLK XTALO INT/D0 RI/D1 EEIO/D2 U3 C2A C1A Y1 C41 C40 These components for internal Silabs use only. C2A C1A XTALO XTALI XTALO XTALI C52 1 Figure 11. Si2493/57/34/15/04 Schematic 8 9 10 11 RTSb RXD TXD CTSb 3 24 23 22 15 4 RXCLK DC Db ESC AOUT TXCLK CLKOUT U1 CLKIN/XTALI C50 Overlap the 16-pin SOIC and 24-pin TSSOP 16 15 14 11 3 RXCLK DC Db ESC AOUT TXCLK VD3.3 4 VDD VA 13 GND 12 5 21 VD3.3 VD 3.3 GND GND VDA VDB Rev. 0.6 6 20 7 19 14 2 "Si24xx2G-DC Rev. 1.0 ISOmodem TM" JP2 INTb EESD AOUT RIb DC Db R20 R21 R22 R23 R19 0 RING TIP C2A C1A These components for internal Silabs use only. Si2493/57/34/15/04 C2A C1A R13 R12 R9 Bias C2 C1 C5 C6 10 7 4 6 5 VREG2 VREG IB C2B C1B U2 IGND 15 Rev. 0.6 RX 8 9 1 12 13 16 14 2 3 Si3010/18 RNG1 RNG2 QE QE2 QB DCT2 DCT3 DCT SC C4 R1 + 11 R2 R11 Q4 R4 R8 R7 R5 Q1 Q3 R30, R31, R32, R33, C30 and C31 are an optional CID population Z1 R3 Q2 C10 Hookswitch Figure 12. Si3018/10 DAA Schematic Ring Detect/CID Q5 DC Term R10 C7 R6 No Ground Plane In DAA Section + D1 C3 - FB1 FB2 C9 C8 R15 R16 TIP RV1 R ING Si2493/57/34/15/04 15 Si2493/57/34/15/04 4. Bill of Materials: Si24xx Daughter Card Item 1 2 3 Quantity 2 C2,C1 1 C3 1 C4 Reference Rating Y2 250 V 50 V Tolerance 20% 20% 20% Foot Print 1808 0805 Size A 16 V 50 V Y3 16 V 16 V 16 V 10 V 400 V 20% 20% 10% 20% 5% 20% 10% 0603 0603 1808 0603 0603 0603 Case A Mini-DIP 0603 2x8 Surface Mount Header, .1 space CONN1X4-100SMT SOT-23 SOT-23 SOT-23 SOD 6 1210 0402 1210 1210 0402 0805 0402 1206 1210 0603 24pin TSSOP 16pin SOIC ATS-SM 4 5 6 7 8 9 10 11 12 13 3 1 2 1 2 1 1 1 2 1 C5,C6,C50 C7 C9,C8 C10 C41,C40 C51 C54 D1 FB1,FB2,FB5 JP1 0.1 uF 2.7 nF 680 pF 0.01 uF 33 pF 0.22 uF 1.0 uF HD04 Ferrite Bead HEADER 8X2 14 1 JP2 4X1 Header_0 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 2 1 2 1 1 1 1 1 2 2 1 1 1 4 1 1 1 Q3,Q1 Q2 Q4,Q5 RV1 R1 R2 R3 R4 R5,R6 R8,R7 R9 R10 R11 R12,R13,R15,R16 U3 U2 Y1 32 1 Z1 Non-installed Components 33 2 C31,C30 34 2 C55,C56 35 1 R18 36 5 R19,R20,R21,R22,R23 37 2 R32,R30 38 2 R33,R31 39 1 C52 40 1 C53 41 1 U1 16 Value 33 pF 10 nF 1.0 uF NPN PNP NPN SiDactor 1.07 K 150 3.65 K 2.49 K 100 K 20 M 1M 536 73.2 0 Si24xx Si3018/10 4.9152Mhz 43 V 120pF 0.1 uF 1.3 k 0 15M 5.1M 0.1 uF 0.22 uF Si2401 300 V 300 V 80 V 275 V 1/2 W 1/16 W 1/2 W 1/2 W 1/16 W 1/8 W 1/16 W 1/4 W 1/2 W 1/16 W 100 A 1% 5% 1% 1% 5% 5% 1% 1% 1% 1% 20pF load, 150 ESR 1/2 W 50 ppm 250 V 10 V 1/16 W 1/16W 1/8 W 1/8 W 16 V 16 V 10% 20% 5% 5% 5% 5% 20% 20% Dielectric X7R X7R Al Electrolytic X7R X7R X7R X7R NPO X7R Tant SOD-123 Rev. 0.6 0805 C0603 RC0603 RC0603 0805 0805 0603 0603 16pin SOIC X7R X7R X7R X7R Manufacturer Number GA342D1XGF330JY02L C0805X7R251-103MNE NACE1R0M50V Manufacturer Murata Venkel NIC Components C0603X7R160-104MNE C0603X7R500-272MNE GA342QR7GD681KW01L C0603X7R160-103MNE C0603NPO160-330JNE C0603X7R160-104MNE TA010TCM105-KAL HD04-T BLM18AG601S TSM-108-01-T-DV Venkel Venkel Murata Venkel Venkel Venkel Venkel Diodes, Inc. MuRata Samtec 68000-403 Berg MMBTA42LT1 MMBTA92LT1 MMBTA06LT1 P3100SB CR1210-2W-1071FT CR0402-16W-150JT CR1210-2W-3651FT CR1210-2W-2491FT CR0402-16W-104JT CR0805-8W-206JT CR0402-16W-1004FT CR1206-4W-5360FT CR1210-2W-73R2FT CR0603-16W-000F Si3018/10-FS 559-FOXSD049-20 OnSemi OnSemi OnSemi Teccor Venkel Venkel Venkel Venkel Venkel Venkel Venkel Venkel Venkel Venkel Silicon Laboratories Silicon Laboratories CTS Reeves MMSZ43T1 OnSemi C0805X7R251-121KNE C0603C124K CR0603-16W-132JT CR0603-16W-000J CR0805-8W-156JT CR0805-8W-515JT C0603X7R160-104MNE C0603X7R160-104MNE Si2401-KS Venkel Kemet Venkel Venkel Venkel Venkel Venkel Venkel Silicon Laboratories Rev. 0.6 1 2 2.1 mm Power jack J4 1 2 1 2 3 4 Power Connector "7-12V AC or DC" J3 M2 M1 SG DTR(i) TXD(i) RXD(o) CD(o) J5 USB Type B 5 9 8 7 6 B3 DB9-RS232_1 J1 RD(o) CTS(o) RTS(i) DSR(o) RS-232 USB 11 10 5 4 3 2 1 V2 V1 USB_+5 SW PUSHBUTTON S1 "RESET" RESETb PowerBlock R1 NI 0 B2 JP7 VCC "Mux off" OE "USB" VD EESD_H "AUTOBAUD" JP9 R10 10k 1 3 5 7 9 11 13 15 JP3 "EEPROM" R11 10k TXCLK_H for JP6 Si2400 only nc or GPIO2 GPIO3 or nc GPIO1 or GPIO3 CLKOUT or nc GPIO4 or AOUT Si2456/57 DCD or EEIO RI or TXCLK ESC or X RTS or RXCLK INT or AOUT 14 13 11 10 8 7 5 4 DC D_H R12 10k "27MHz CLK" JP11 JP6 15 12 9 6 3 Si2401 GPIO2 or nc nc or GPIO5 GPIO3 or nc nc or GPIO1 nc or GPIO4 Place White Dot Silkscreen Near Pin 1 AOUT_H "ESC" "EESD" "RIb" "INT" "AOUT" 2 DC D_H "RXCLK" "DCDb" 1 2 4 6 8 10 HEADER 5X2 "PCM" R28 10k "Si2401 27MHz CLK" JP12 AOUT_H Si2401 Reset Options "JP6: recommended settings" "Si2400: 2-3, 4-5, 8-9, 11-12, 13-14" "Si24xx: 1-2, 4-5, 7-8, 10-11, 13-14" "Si2401: 1-2, 5-6, 7-8, 11-12, 14-15" "Si24xx alt: 1-2, 5-6, 7-8, 11-12, 14-15" Table on silkscreen RS-232 Function Info CD Info RI Ctrl DTR Ctrl RTS Info DSR JP10 2 4 6 8 10 12 14 16 R2 HEADER 8X2 Place White Dot Silkscreen Near Pin 1 "CLKOUT" TXCLK_H "TXCLK" "RTSb" "RXD" "TXD" "CTSb" "RESETb" RESETb Si24xx Reset Options JP5 DSR_M RTS_M DTR_M RI_M CD_M RXD_M TXD_M CTS_M UART Mux RESETb 1 3 5 7 9 R6 R7 B5 AOUT +3.3V Speaker B6 ESC_H EESD_H RI_H INT_H AOUT_H RXCLK_H DCD_H CLKOUT_H TXCLK_H RTS_H RXD_H TXD_H CTS_H RESET_H 0 0 +3.3V VCC SPEAKER C32 0 SDO JP13 J2 VCC "EEPROM" HOLD WP CS SCLK SDI RCA JACK NI 8 7 3 1 6 5 U9 R27 RING TIP Daughter Card Socket EESD_H EECS_H EECLK_H EESD_H RESET Right angle connector on board edge JP4 Figure 13. Motherboard Top-level Schematic JP7 for measuring current to modem (i.e. VD goes to modem only) R8 1.3k JP8 RI_U RI_U DTR_U DTR_U CD_U DSR_U CD_U RTS_U DSR_U CTS_U CTS_U RTS_R TXD_U TXD_U RI_T RI_T RXD_U CD_T DTR_T DSR_T RTS_T CTS_T TXD_T RXD_T RXD_U VD +3.3V USB USBUSB+ B4 CD_T DTR_T DSR_T RTS_T CTS_T TXD_T RXD_T RS-232 RD_R CTS_R RTS_R DSR_R B1 S DTR_R TXD_R RXD_R CD_R 2 R9 0 "TIP" TP7 "RING" TP8 1 2 3 4 5 6 7 8 9 10 11 12 Speaker LS1 RJ11 Si2493/57/34/15/04 17 18 C1 1.0 uF VD + FB2 C2 C3 470 pF 1.0 uF CLKOUT_H TXCLK_H RTS_H RXD_H TXD_H CTS_H RESET_H EECS_H R26 1.3k 2 4 6 8 10 12 14 16 C4 470 pF SOCKET 8X2 1 3 5 7 9 11 13 15 JP1 Place White Dot Silkscreen Near Pin 1 Rev. 0.6 Si2401 NC GPIO1 GPIO5 GPIO2 NC GND TXD GPIO3 RXD NC CTS NC RESET NC VD GPIO4 JP2 RING TIP TIP and RING minimum 20 mils wide and as far as possible from ground. Connectors for ISOModem module. ESC_H EESD_H RI_H INT_H AOUT_H RXCLK_H DCD_H EECLK_H Figure 14. Daughter Card Interface Schematic Table NOT on silkscreen JP1/3 Si2400 Si24xx 1 NC CLKOUT/A0/EECS 2 NC EECLK/D5/RXCLK 3 NC alt_RIb/TXCLK/D6 NC 4 DCD/D4 CLKOUT 5 RTS/D7 GND GND 6 TXD TXD/WR 7 GPIO1 ESC/D3 8 RXD RXD/RD 9 GPIO2 EESD/D2 10 CTS CTS/CS 11 GPIO3 RI/D1 12 RESET 13 RESET GPIO4 14 INT/D0 15 VD VD 16 AOUT AOUT/INT Net names correspond to Si24xx. See table for Si2400 equivalents + R17 10k VD Si2493/57/34/15/04 V2 V1 D2 D4 D1 D3 + C6 470 uF C7 0.1 uF 1 IN U1 Rev. 0.6 TP6 TP5 TP4 TP3 Standoffs in each corner of board. 1.6 R13 USB_+5 1 2 7805 "GND" "GND" "GND" C8 10 uF D5 C9 0.1 uF BAT54C VCC 4 3 2 1 U2 FB/NC OUT(2) OUT(1) TPS77601DR IN(2) IN(1) EN GND RESET/PG TP16 "+5V" 5 6 7 8 R16 110k R14 196k C10 10 uF TP17 "+3.3V" Figure 15. Power Supply Schematic TP18 TP2 TP1 3 FB1 OUT 10 nF C5 GND 2 USB_VCC +3.3V VD C11 470 pF R15 3 2 RST 0 DS1818 GND VCC U3 OPTIONAL 1 RESET Si2493/57/34/15/04 19 Rev. 0.6 TXD_R RTS_R DTR_R DSR_R RD_R CD_R CTS_R RXD_R D6 MMBZ15VDC D7 MMBZ15VDC D8 MMBZ15VDC D9 MMBZ15VDC MMBZ15VDC D10 MMBZ15VDC D12 + MMBZ15VDC D13 C13 470 pF C14 0.1 uF R31 10k NI R30 10k VCC 1.0 uF + C15 R33 10k R32 10k NI Figure 16. RS-232 Interface Schematic MMBZ15VDC D11 C12 1.0 uF FB3 C17 C16 14 15 11 9 8 12 10 7 6 5 4 27 SHDN MBAUD R3IN R2IN R1IN T5OUT T4OUT T3OUT T2OUT T1OUT V- V+ 26 VCC GND 20 2 VCC MAX3237 EN R3OUT R2OUT R1OUT R1OUTB T5IN T4IN T3IN T2IN T1IN C2- C2+ C1- C1+ U4 13 18 20 21 16 17 19 22 23 24 3 1 25 28 R29 10k TP10 C19 C18 TP11 TXD_T RTS_T DTR_T DSR_T RI_T CD_T CTS_T RXD_T Si2493/57/34/15/04 Si2493/57/34/15/04 VCC R3 3 7 2 AOUT 47 k C21 R4 3k 820 pF - 4 8 0.1 uF + C24 5 + C20 6 1 C22 0.1 uF 1 U10 LM386M-1 C23 2 SPEAKER 100 uF 0.1 uF R5 10 Figure 17. Audio Amplifier Schematic "CTS_U" TP12 "RXD_U" TP13 U7 TXD_U RXD_U RTS_U CTS_U 2 5 11 14 1B1 2B1 3B1 4B1 1A 2A 3A 4A 4 7 9 12 TXD_T RXD_T RTS_T CTS_T 3 6 10 13 1B2 2B2 3B2 4B2 OE S 15 1 TP15 "CTS_T" TP14 "RXD_T" TXD_M RXD_M RTS_M CTS_M VCC R18 10k 74CBT3257/SO S O\E\ U8 DTR_U DSR_U CD_U RI_U 2 5 11 14 1B1 2B1 3B1 4B1 1A 2A 3A 4A 4 7 9 12 DTR_T DSR_T CD_T RI_T 3 6 10 13 1B2 2B2 3B2 4B2 OE S 15 1 DTR_M DSR_M CD_M RI_M R19 10k 74CBT3257/SO Figure 18. UART Mux Schematic Rev. 0.6 21 Si2493/57/34/15/04 USB_VCC U5 C29 1.0 uF + C31 8 VBUS 7 REGIN 6 R20 4.7 k RST 9 SUSPEND 12 SUSPEND 11 RI DCD DTR DSR TXD RXD RTS CTS 2 1 28 27 26 25 24 23 VDD TP19 RI_U 3 GND U11 1 5 5 4 USB- 2 3 DD+ CD_U DTR_U DSR_U TXD_U RXD_U 4 CP2101/02 RTS_R GMS05F USB+ CTS_U Figure 19. USB Interface Schematic 22 Rev. 0.6 Si2493/57/34/15/04 5. Bill of Materials: Si24xx Motherboard Reference C1,C3,C12,C15,C29 C2,C4,C11,C13 C5 C6 C7,C9 C10,C8 C14,C16,C17,C18,C19,C2 0,C22,C23,C31,C32 C21 C24 D1,D2,D3,D4 D5 D6,D7,D8,D9,D10,D11,D1 2,D13 FB1,FB2,FB3 JP1 JP2 JP3 JP4 Value 1.0 uF 470 pF 10 nF 470 uF 0.1 uF 10 uF 0.1 uF Rating 10 V 25V 16 V 25 V 25 V 16V 16 V Tolerance 10% 5% 10% 20% 10% 10% 20% 820 pF 100 uF DIODE BAT54C MMBZ15VDC 50 V 16 V 30 V 5% 10% 0.5 A Item 1 2 3 4 5 6 7 Quantity 5 4 1 1 2 2 10 8 9 10 11 12 1 1 4 1 8 13 14 15 16 17 3 1 1 1 1 18 8 19 20 21 1 1 1 JP5,JP7,JP8,JP9,JP10,JP 11,JP12,JP13 JP6 J1 J2 22 1 J3 23 1 J4 24 25 26 27 28 29 30 31 32 1 1 1 6 1 1 1 2 10 33 34 35 36 37 1 1 1 1 1 38 39 40 3 4 8 41 42 43 44 45 46 2 1 1 1 1 1 2.1 mm Power jack J5 USB Type B LS1 Speaker RJ11 MTJG-2-64-2-2-1 R2,R6,R7,R9,R15,R27 0 R3 47 k R4 3k R5 10 R26,R8 1.3k R10,R11,R12,R17,R18,R1 10k 9,R28,R29,R30,R33 R13 1.6 R14 196k R16 110k R20 4.7 k S1 SW PUSHBUTTON TP1,TP2,TP18 Black Test Point TP3,TP4,TP5,TP6 Stand off TP7,TP8,TP10,TP11,TP12, Blue Test Point TP13,TP14,TP15 TP16,TP17 Red Test Point TP19 Blue Test Point U1 7805 U2 TPS77601DR U3 DS1818 U4 MAX3237 47 48 49 50 51 1 2 1 1 1 U5 U8,U7 U9 U10 U11 Foot Print 3216_EIAA CC0805 CC0603 C5X10MM-RAD CC0805 CC1206 CC0603 Dielectric Tant X7R X7R Electrolytic X7R X7R X7R Manufacturer Number TA010TCM105-KAL C0805C471J5GACTU C0603X7R160-103KNE UVX1E471MPA C0805X7R250-104KNE C1206X7R100-106KNE C0603X7R160-104MNE Manufacturer Venkel TTI Venkel NIC Components Venkel Venkel Venkel CC0805 NPO C2.5X6.3MM-RAD Electrolytic SOD123 SOT-23 SOT-23 C0805COG500-821JNE UVX1C101MEA1TD MBR0530T1 BAT54C MMBZ15VDC Venkel Nichicon Motorola Diodes Inc. General Semiconductor Ferrite Bead SOCKET 8X2 4X1 Socket HEADER 8X2 HEADER 5X2 RC0805 CONN2X8 CONN4[6238] CONN2X8 CONN2X5[6238]RA BLM21A601S SSW-108-01-T-D SSW-104-01-T-S 517-6121TN TSW-105-25-T-D-RA Murata Samtec Samtec Samtec Samtec 2X1 Header CONN2[6040] 517-611TN Berg 3x5 Header DB9-RS232_1 RCA JACK CONN3X5 CONN9[6543]DBF CONN2[12090]RC A TB2[12065]TSA K22-E9S-030 16PJ097 Kycon Mouser 506-5ULD02 Mouser Power Connector CP2101/02 74CBT3257/SO PDIP Socket OP-AMP GMS05F 1/10 W 1/10 W 1/10 W 1/10 W 1/16 W 1/16 W 5% 5% 1% 5% 5% 1/8 W -0.05 1/10 W 5% CONN3[175120]P WR CONN-USB-B HCM12A[9052] RJ11[6238]DUAL RC0603 RC0805 RC0805 RC0805 RC0603 RC0603 ADC-002-1 Adam Tech 897-30-004-90-000000 HCM1206A MTJG-2-64-2-2-1 CR0603-10W-000JT NRC10J473TR NRC10J302TR NRC10F10R0TR CR0603-16W-132JT CR0603-16W-103JT Mill-Max JL World Adam Tech Venkel NIC Components NIC Components NIC Components Venkel Venkel RC1206 RC0805 RC0805 RC0805 SW4[6240]PB CR1206-8W-1R6JT MCHRIDEZHFX1963E CR21-114J-T NRC10J472TR 101-0161 Venkel Classic Comp Classic Comp NIC Components Mouser CONN1[6040] MH-125 CONN1[6040] 151-203 Mouser 151-205 Mouser CONN1[6040] CONN1[6040] TO-220-LD SO8 SOT-23 SOP65X780-28N 151-207 151-207 uA7805CKC TPS77601DR DS1818-10 MAX3237E (Sipex SP3238E 2nd source) CP2101/02 SN74CBT3257DBR 210-93-308-41-001000 LM386M-1 GMS05F Mouser Mouser Texas Instruments Texas Instruments Dallas Semiconductor Maxim 28-pin MLP SOP65X780-16N DIP8-SKT SO8 SOT-23-5N Rev. 0.6 Silicon Laboratories Texas Instruments Mill-Max National Semi Vishay 23 Figure 20. Daughter Card Component Side Silkscreen Si2493/57/34/15/04 24 Rev. 0.6 Figure 21. Daughter Card Solder Side Silkscreen Si2493/57/34/15/04 Rev. 0.6 25 Figure 22. Daughter Card Component Side Layout Si2493/57/34/15/04 26 Rev. 0.6 Figure 23. Daughter Card Solder Side Layout Si2493/57/34/15/04 Rev. 0.6 27 Figure 24. Motherboard Silkscreen Si2493/57/34/15/04 28 Rev. 0.6 Figure 25. Motherboard Silkscreen (Back Side) Si2493/57/34/15/04 Rev. 0.6 29 Figure 26. Motherboard Component Layout Si2493/57/34/15/04 30 Rev. 0.6 Figure 27. Motherboard Solder Side Layout Si2493/57/34/15/04 Rev. 0.6 31 Figure 28. Motherboard Ground Plane Layout Si2493/57/34/15/04 32 Rev. 0.6 Figure 29. Motherboard Power Plane Layout Si2493/57/34/15/04 Rev. 0.6 33 Si2493/57/34/15/04 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. 34 Rev. 0.6 Si2493/57/34/15/04 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 Rev. 0.6 35 Smart. Connected. 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