Scsi Interface Connector; Table 3-6. Connector Scsi Interface Interconnect Signals - Motorola MVME712M Installation And Use Manual

SCSI INTERFACE Connector

The SCSI port is the connector labeled
panel of the MVME712M, connected to connector J4 on the top of
the board. Each pin connection, signal mnemonic, and signal
characteristic for the SCSI port connector is listed in Table 3-6.

Table 3-6. Connector SCSI INTERFACE Interconnect Signals

Signal
Pin Number
Mnemonic
1-25 GND
26 DB00*
27 DB01*
28 DB02*
29 DB03*
30 DB04*
31 DB05*
32 DB06*
33 DB07*
34 DBP*
35-37 GND
38 TERMPWR
39,40 GND
41 ATN*
42 GND
43 BSY*
Signal Name and Description
GROUND
DATA bus (bit 0) - least significant bit and the lowest
priority during the arbitration phase.
DATA bus (bit 1)
DATA bus (bit 2)
DATA bus (bit 3)
DATA bus (bit 4)
DATA bus (bit 5)
DATA bus (bit 6)
DATA bus (bit 7) - most significant bit and the highest
priority during the arbitration phase.
DATA bus (parity) - data parity is odd. Use of parity is a
system option. Parity is not valid during the arbitration
phase.
GROUND
TERMINATOR POWER (fused on the P2 adapter)
GROUND
ATTENTION - signal driven by the initiator. Indicates
the attention condition.
GROUND
BUS BUSY - OR-tied signal that indicates that the bus is
being used.
MVME712M Transition Module
on the front
SCSI INTERFACE
3
3-17