user manual

4-22 Computer Group Literature Center Web Site

Connector Pin Assignments

Serial Ports 1-4

For the MVME2603/2604, the interface for asynchronous ports 1 and 2

and for synchronous/asynchronous ports 3 and 4 is implemented with four

EIA-232-D DB25 connectors (J7-J10) located on the front panel of the

MVME712M transition module. The pin assignments for serial ports 1-4

on the MVME712M are listed in the following table.

Table 4-12. Serial Connections—MVME712M Ports 1-4

1 No Connection

2 ETxDn

3ERxDn

4ERTSn

5ECTSn

6EDSRn

7 GND

8EDCDn

9 No Connection

10 No Connection

11 No Connection

12 No Connection

13 No Connection

14 No Connection

15 ERTxC (Port 4 only)

16 No Connection

17 ERRxC (Port 4 only)

18 No Connection

19 No Connection

20 EDTRn

21 No Connection