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A.2.2
The SCSI Interface
A-6
The SCSI interface operates as 8-bit or 16-bit, synchronous or
asynchronous, SE bus, and supports SCSI-2 protocols and 16-bit
arbitration. The interface is made through connectors J2, J3 and J4 for
channel A. Channel B connectors are J6, J7, and J8. Connectors J2 and
J6 are 68-pin high density right-angle receptacles for internal
connections. Connectors J3 and J7 are 68-pin VHDCI right-angle
receptacles that protrude through the back panel bracket. Connectors J4
and J8 are 50-pin low density vertical shrouded headers used for internal
SCSI connections.
Note:
Up to two (and only two) connections are allowed on each
channel. Connecting to all three connectors on a channel
will result in an unreliable configuration.
Active SE SCSI termination is provided automatically. SCSI termination
power is also supplied by the board.
signal assignments for J2/J6, J3/J7, and J4/J8.
Technical Specifications
Table A.3
and
Table A.4
show the
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