Motorola MVME760, Руководство пользователя, Страница: 38 / 48

Support Information
3-16
3
COM1 and COM2 Connectors
Two standard DB9 connectors located on the front panel of the
MVME760 transition module provide the interface to the COM1
and COM2 serial ports. The pin assignments for these connectors
are shown in Table 3-5. The COM1 and COM2 connector shields are
tied to chassis ground.
6 PRD0 See IEEE P1284 D2.00 Standard
7 PRD1 See IEEE P1284 D2.00 Standard
8 PRD2 See IEEE P1284 D2.00 Standard
9 PRD3 See IEEE P1284 D2.00 Standard
10 PRD4 See IEEE P1284 D2.00 Standard
11 PRD5 See IEEE P1284 D2.00 Standard
12 PRD6 See IEEE P1284 D2.00 Standard
13 PRD7 See IEEE P1284 D2.00 Standard
14 INPRIME_ See IEEE P1284 D2.00 Standard
15 PRSTB_ See IEEE P1284 D2.00 Standard
16 SELIN_ See IEEE P1284 D2.00 Standard
17 AUTOFD_ See IEEE P1284 D2.00 Standard
18 +5V +5Vdc Power
19-25 GND SIGNAL GROUND
Table 3-5. COM1 and COM2 Interconnect Signals (MVME760)
Pin
Number
Signal
Mnemonic Signal Name and Description
1 DCD DATA CARRIER DETECT - Sent by the modem to
the terminal to indicate that a valid carrier is being
received. Not used by port 1 (J1).
Table 3-4. Parallel I/O Connector Signals (MVME760) (Continued)
Pin
Number
Signal
Mnemonic Signal Name and Description