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BajaPPC-750: VMEbus Interface
6.13 VMEbus Connector Pin Assignments
The main VMEbus connectors are P0, P1, and P2. Connector P0 is an optional
six-row, 114-pin VME connector. In the standard configuration, connectors P1
and P2 are five-row, 160-pin DIN connectors. P2 has an optional configuration
that provides Motorola compatability. In the optional P2 configuration, connec-
tors P1 and P2 are three-row, 96-pin DIN connectors. The tables on the following
pages show the pin assignments.
NOTE.
The P0 connector is optional and requires a mating J0 connector on
the backplane. PMC connector J14 connects directly to P2. PMC con-
nector J24 connects directly to P0.
Figure 6-1. VMEbus Connectors (P0, P1, P2)
WRITE*
WRITE. A three-state signal generated by the master to indicate whether
the data transfer cycle is a read or a write. A high level indicates a read
operation; a low level indicates a write operation.
+5V STDBY
+5 Vdc STANDBY. This line can act as a backup power source for the real-
time clock.
P2
C1
B1
A1
C32
B32
A32
P1
D1
Z1
D32
Z32
B1
C1
D1
E1
P0
A19
A1
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