Avago Technologies LSI53C1020 User Manual

Page 66

3-10

Signal Description

Version 2.4

RBIAS

N/A

Connect a 9.76 k

Ω

or 10.0

Ω

resistor between the

VDDBIAS and RBIAS pins to
generate the LVD signaling
pad bias current.

DIFFSENS

N/A

The SCSI Channel
Differential Sense pin
detects the mode of the SCSI
bus. This signal is 5 V tolerant
and must connect to the
DIFFSENS signal on the
physical SCSI bus.
SE Mode: Driving this pin
below 0.5 V (LOW) indicates
SE mode and places the
SCSI channel in SE bus
mode.
LVD Mode: Driving between
0.7 V and 1.9 V
(intermediate) indicates LVD
mode and places the SCSI
channel in LVD bus mode.
HVD Mode: Driving this pin
above 2.0 V (HIGH)
indicates HVD mode and
causes the SCSI channel to
3-state its SCSI drivers.

Table 3.9

SCSI Channel Interface Signals (Cont.)

Signal
Name

456-Ball
Package

384-Ball
Package

Type

Strength Description

This manual is related to the following products:

LSI53C1020A