Avago Technologies LSI53C120 - Manual (Page 19)

LSI20101/LSI20102 SCSI Bus Boards 11
Figure 2 LSI20101 Board Installation
4 LSI20102 SCSI Bus Converter Board
The SCSI functionality for the LSI20102 Converter board is contained
within the LSI53C120 SCSI Bus Expander chip. The LSI20102 physically
isolates yet logically connects one SE SCSI bus segment and one
differential SCSI bus segment, regenerates timing, and passes bus
protocol in compliance with the SCSI standard. The LSI20102 board is
designed for computer systems needing physical and/or electrical
isolation, and extension along with transceiver translation of the SCSI
NC
J1
J3 J2
U5
U8
LSI53C120
J4
SE-A SE-B
SW1 - SE-A TERMPWR
SW2 - SE-B TERMPWR
SW3 - SE-A TERM OFF
SW4 - SE-B TERM OFF
CR3 - SE-B TERMPWR SHORTED
CR5 - SE-A BUSY
CR6 - SE-A TERMPWR SHORTED
U4
SW-1
SW-2
SW-3
SW-4
CR3 CR5 CR6
SE-A
TERM
SE-B
TERM
BUSY LSI20101
U1
U10 U2
U11 U3
U9
GND GND +5V
0.125” Diameter
Mounting Hole
for Fastener
Mounting Hole
for Fastener Mounting Hole
for Fastener
Mounting Hole
for Fastener
Optional LED
and Control
Termination
Harness
A-Side SCSI
SE Connector
B-Side SCSI
SE Connector
Power
Plug