Avago Technologies LSI53C896 - Manual (Page 103)

SCSI Bus Interface Signals 3-15
Version 3.3 Copyright © 1998–2003 by LSI Logic Corporation. All rights reserved.
A_SCTRL Signals – Table 3.12 describes the SCSI Function A_SCTRL
Signals group.
Table 3.12 SCSI Function A_SCTRL Signals
Name Bump Type Strength Description
A_SC_D
−
A_SC_D+
A_SI_O
−
A_SI_O+
A_SMSG
−
A_SMSG+
A_SREQ
−
A_SREQ+
A_SREQ2
−
A_SREQ2+
A_SACK
−
A_SACK+
A_SACK2
−
A_SACK2+
A_SBSY
−
A_SBSY+
A_SATN
−
A_SATN+
A_SRST
−
A_SRST+
A_SSEL
−
A_SSEL+
C15
A16
B17
C17
C14
A15
C16
A17
B16
D16
C13
A14
B13
A13
C12
A12
B11
B12
B14
D13
B15
D15
I/O 48 mA
SCSI
SCSI phase line, command/data.
SCSI phase line, input/output.
SCSI phase line, message.
Data handshake line from target device.
Data handshake line from target device. Duplicate of
A_SREQ
−
enabled by pulling MAD[5] HIGH at reset.
Data handshake signal from the initiator device.
Data handshake signal from the initiator device.
Duplicate of B_SACK
−
and B_SACK+ enabled by pulling
MAD[5] HIGH at reset.
SCSI bus arbitration signal, busy.
SCSI Attention, the initiator is requesting a message out
phase.
SCSI bus reset.
SCSI bus arbitration signal, select device.
For all A_SCTRL Signals:
LVD Mode: Negative and positive halves of LVDlink
signal pairs shown for SCSI Function A Control.
SE Mode: SCSI Function A Control signals shown.
+ signals are at 0 V.
HVD Mode: SCSI Function A Control signals shown.
+ signals become direction control.