Silicon Laboratories SI2493/57/34/15/04 - Manual (Page 7)

Si2493/57/34/15/04
Global ISOmodem-EVB
Rev. 0.6 7
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 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 Ready 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)