Scsi Signals; Scsi Control Signals - LSI LSI53C875A Technical Manual

3.4.2 SCSI Signals

Table 3.9 SCSI Signals
Name PQFP
SD[15:0] 113, 115–17, 85–87, 89,
102, 103, 105–108, 110,
111
SDP[1:0] 112, 101

3.4.3 SCSI Control Signals

Table 3.10

SCSI Control Signals

Name PQFP BGA Type Strength Description
SCD 92 J12
SIO 90 K13
SMSG 95 H11
SREQ 91 J11
SACK 97 H13
SBSY 98 H9
SATN 100 G12
SRST 96 H12
SSEL 94 H10
Table 3.9 describes the SCSI signals.
BGA
D13, E10, C13, D11, J9,
L13, K11, J10, G10, G9,
F13, F11–9, E12, E11
F8, G13
Table 3.10 describes the SCSI Control signals.
I/O 48 mA SCSI phase line, command/data
I/O 48 mA SCSI phase line, input/output.
I/O 48 mA SCSI phase line, message.
I/O 48 mA Data handshake line from target device.
I/O 48 mA Data handshake signal from the initiator device.
I/O 48 mA SCSI bus arbitration signal, busy.
I/O 48 mA SCSI Attention, the initiator is requesting a message out
phase.
I/O 48 mA SCSI bus reset.
I/O 48 mA SCSI bus arbitration signal, select device.
SCSI Bus Interface Signals
Type Strength Description
I/O 48 mA SCSI SCSI Data.
I/O 48 mA SCSI SCSI Parity.
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