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A.2.2 the scsi interface, A.2.2, The scsi interface – LSI U160 User Manual

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3.75 pc

10.25 pc

11.25 pc

38.25 pc

4.333 pc

48.583 pc

52.5 pc

34.5 pc

44.25 pc

Operational Environment

A-7

A.2.2

The SCSI Interface

The SCSI interface conforms to ANSI X 3T10.11/1142. The SCSI
interface operates as 16-bit, synchronous or asynchronous, SE or LVD,
and supports Ultra160 SCSI protocols. Arbitration is supported for 8-bit
(at lower SCSI speeds) and 16-bit. Active SE or LVD SCSI termination
is provided automatically. SCSI termination power is supplied by the
board.

Connector J3 is a 68-pin HD right angle connector that protrudes through
the back panel bracket and is used for external connections. Connector
J4 is a 68-pin HD right angle header used for internal connections.

Table A.4

and

Table A.5

show the signal assignments for J4 and J3

respectively.