Serial I/O Connector J2 Pin Assignments - Intel iSBC 86/14 Hardware Reference Manual

PREPARATION FOR USE
Table 2-29. Serial I/O Connector J2 Pin Assignments
Pin Number
J2 RS232C
RS232C Function
PCI Function
1 14
Not Used Not Used
2
1 Ground Ground
3 15
Not Used Not Used
4 2
Transmit Data RxD input
5 16
Sec Receive
Selectable
6 3 Receive Data TxD Output
7 17 External Clock TxC/RxC Input
8 4 Request To Send CTS/ Input
9 18
Not Used Not Used
10
5 Clear To Send RTS/ Output
11 19
Not Used Not Used
12 6
Data Set Ready DSR/ Input
13
20 Data Terminal Ready DTR/ Output
14
7
Ground Ground
15 21
Not Used
Not Used
16 8
Not Used Not Used
17 22
Not Used
Not Used
18
9 Not Used
Not Used
19 23
-12 volts DC
Not Connected
20 10
Not Used
Not Used
21 24
Tran Sig Ele Timing
Selectable
22 11 +12 volts DC
Not Connected
23 25
+5 volts DC
Not Connected
24 12
Not Used Not Used
25 N/C Ground
Not Connected
26 13
Secondary CTS Selectable
Note:
Refer to Figure 2-12 for a description of connector pin numbering
conventions.
Board edge connector pin numbering and connector
pin numbering conventions may not agree.
2-71