IBM BDM-610000049 - Manual (Page 108)

98 CMX158886 cpuModule BDM-610000049 Rev G
Table 67 COM1/COM2 (RS-232) — 9-Pin D Connector (male)
IDAN Pin # Signal Function Mode
1 DCD Data Carrier Detect Input
2 RXD Receive Data Input
3 TXD Transmit Data Output
4 DTR Data Terminal Ready Output
5 GND Ground —
6 DSR Data Set Ready Input
7 RTS Request To Send Output
8 CTS Clear To Send Input
9 RI Ring Indicator Input
Table 68 COM1/COM2 (RS-422/485) — 9-Pin D Connector (male)
IDAN Pin # Signal Function Mode
1 Reserved — —
2 RXD– Receive Data – Input
3 TXD– Transmit Data – Output
4 Reserved — —
5 GND Ground —
6 Reserved — —
7 TXD+ Transmit Data + Output
8 RXD+ Receive Data + Input
9 Reserved — —