Logic MegaRAID SCSI 320-2 RAID Controller User's Guide

A-8 SCSI Cables and Connectors

The following applies to the high-density SCSI connector described in

Table A.3:

• A hyphen before a signal name indicates that signal is active low.

• The connector pin refers to the conductor position when using 0.025

inch centerline ﬂat ribbon cable with a high-density connector

(AMPLIMITE.050 Series connectors).

• Eight-bit devices connected to the P-Cable must leave the following

signals open: -DB (8), -DB (9), -DB (10), -DB (11), -DB(12), -DB (13),

-DB (14), -DB 15), and -DB (P1).

• All other signals should be connected as deﬁned.

Caution: Lines labeled RESERVED should be connected to Ground

in the bus terminator assemblies or in the end devices on

the SCSI cable. RESERVED lines should be open in the

other SCSI devices, but can be connected to Ground.

Ground 22 43 44 56 FAULT_DATA H

Ground 23 45 46 57 -BSY

Ground 24 47 48 58 -ACK

Ground 25 49 50 59 -RST

Ground 26 51 52 60 -MSG

Ground 27 53 54 61 -SEL

Ground 28 55 56 62 -C/D

Ground 29 57 58 63 -REQ

Ground 30 59 60 64 -I/O

Ground 31 61 62 65 -DB(8)

Ground 32 63 64 66 -DB(9)

Ground 33 65 66 67 -DB(10)

Ground 34 67 68 68 -DB(11)

Table A.3 High-Density 68-Pin Connector Pinout (SE SCSI)

Signal

Connector

Cable

Connector

Pin Signal