Board Layout; Board Layout For The Aha-2740W And - Adaptec AHA-2740W User Manual

AHA-2740W/2742W/2744W User's Guide

Board Layout

Figure 1-1 shows the location of the major components on the
AHA-2740W and AHA-2742W; the table below provides a descrip-
tion of each component.
J1 J2 J3
Pin 1
U1 U7
Figure 1-1. Board Layout for the AHA-2740W and AHA-2742W
Location Description
J1 Floppy Enable Jumper (AHA-2742W Only)
J2 External LED Connector
J3 Floppy Connector (AHA-2742W Only)
J4 16-bit Wide SCSI Channel Internal Connector
J5 8-bit SCSI Channel Internal Connector
J6 16-bit Wide SCSI Channel External Connector
U1 Floppy Controller (AHA-2742W Only)
U3 RAM
U7 Host Adapter BIOS
U11 AIC-7770 Bus Master SCSI Chip
U12 AIC-701 Configuration Chip
1-6
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A
A A
AHA-2740W/2742W/2744W User's Guide
A A
A A Stock Number: 510647-00, Rev. A
A
A A Print Spec Number: 492897-00
A A
Current Date: 8/3/94
AAAA AAAA A A AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA
AAAA
J4 J5
Pin 1
U3 U11 U12
ECN Date: 8/9/94
AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA
J6
A
A A
A A
Page: 1-6 A A
A
A A
A A
AAAA AAAA AAAA A A A A