S i 2 4 9 3 / 5 7 / 3 4 / 1 5 / 0 4
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)
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