Specifications

Baseboard Connectors
79
Serial Ports A and B
Figure 4-11 shows the external serial port connector. Table 4-10 lists the serial port
connector pin signals and functional descriptions.
Figure 4-11 Serial Port A (External) Connector
16 INIT_L
17 SLCTIN_L
18−25 GND
Table 4-10 Serial Port A (External) Connector Pinout
Pin Signal Description
1 DCD Data carrier detected
2 RXD Receive data
3 TXD Transmit data
4 DTR Data terminal ready
5 GND Ground
6 DSR Data set ready
7 RTS Request to send
8 CTS Clear to send
9 RIA Ring indication active
Table 4-9 (continued) Parallel Port Connector Pinout
Pin Signal
96
51