IBASE SI-304 - Manual (Page 20)

12 SI-304 User Manual
J1: Memory Voltage Setting
J1 Function
1.5V
1.35V
COM1: COM1 Connector
COM1 Pin # Signal Name
1 DSR, Data set ready
2 GND, ground
3 GND, ground
4 TXD, Transmit data
5 RXD, Receive data
6 DCD, Data carrier detect
7 DTR, Data terminal ready
8 CTS, Clear to send
9 RTS, Request to send
10 RI, Ring indicator
COM2: COM2 Connector
Signal Name Pin # Pin # Signal Name
Data carrier detect 1 2 Data set ready
Receive data 3 4 Request to send
Transmit data 5 6 Clear to send
Data terminal
ready
7 8 Ring indicator
Ground 9 10 No connect.