5-6
Computer Group Literature Center Web Site
Pin Assignments
5
Serial Port 1/Console Connector - J25
A DB25 socket connector located on the front panel of the MVME172P4
provides the interface to Serial Port 1. The pin assignments for the
connector are as follows.
VMEbus Connectors - P1, P2
Two three-row 96-pin DIN type connectors, P1 and P2, supply the
interface between the base board and the VMEbus. P1 provides power and
VME signals for 24-bit addressing and 16-bit data. Its pin assignments are
set by the IEEE P1014-1987 VMEbus Specification. P2 Row B supplies
the base board with power, with the upper 8 VMEbus address lines, and
with an additional 16 VMEbus data lines. P2 rows A and C are not used in
the MVME172P4 implementation. The pin assignments for P1and P2 are
listed in
Table 5-6
and
Table 5-7
respectively.
Table 5-5. Serial Connector J25 Pin Assignments
1
No Connection
No Connection
14
2
TXDA
TXCA
15
3
RXDA
No Connection
16
4
RTSA
RXCA
17
5
CTSA
No Connection
18
6
DSRA
No Connection
19
7
GND
DTRA
20
8
DCDA
No Connection
21
9
No Connection
No Connection
22
10
No Connection
No Connection
23
11
No Connection
TXCOA
24
12
No Connection
No Connection
25
13
No Connection
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