user manual

MVME761-Compatible Versions

http://www.motorola.com/computer/literature 4-27

Serial Ports 3 and 4

For MVME761-compatible versions of the base board, the

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

a pair of HD26 connectors (J7 and J8) located on the front panel of the

transition module. The pin assignments for serial ports 3 and 4 are listed in

the following table.

6SPnDSR

7SPnRTS

8SPnCTS

9SPnRI

Table 4-17. Serial Connections—Ports 3 and 4 (MVME761)

1 No Connection

2TXDn

3RXDn

4RTSn

5CTSn

6DSRn

7 GND

8DCDn

9SPn_P9

10 SPn_P10

11 SPn_P11

12 SPn_P12

13 SPn_P13

14 SPn_P14

15 TXCIn

16 SPn_P16

17 RXCIn

Table 4-16. Serial Connections—Ports 1 and 2 (MVME761)