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From: John_A_Pham@cup.portal.com
Newsgroups: sci.electronics
Subject: Re: Looking for DD-50P SCSI terminators
Message-ID: <33090@cup.portal.com>
Date: 22 Aug 90 19:13:26 GMT
References: <8287@ncar.ucar.edu> <1990Aug22.045225.23292@cs.uow.edu.au>
  <3602@goanna.cs.rmit.oz.au>
Organization: The Portal System (TM)
Lines: 32

Here's the pin description for SCSI differential

Signal            Pin Number       Signal
*shield ground      1  2       ground
+db0                3  4       -db0
+db1                5  6       -db1
+db2                7  8       -db2
+db3                9  10      -db3
+db4                11 12      -db4
+db5                13 14      -db5
+db6                15 16      -db6
+db7                17 18      -db7
+dbp (parity)       19 20      -dbp
ground              21 22      ground
ground              23 24      ground
**tempwr            25 26      **tempwr
ground              27 28      ground
+atn                29 30      -atn
ground              31 32      ground
+bsy                33 34      -bsy
+ack                35 36      -ack
+rst                37 38      -rst
+msg                39 40      +msg
+sel                41 42      -sel
+c/d                43 44      -c/d
+req                45 46      -req
+io                 47 48      -io
ground              49 50      ground
 
*Optional shield ground on some cables
**these pins are reserved for providing optional terminator power (+5V)