Avago Technologies LSI53C876E - Manual (Page 87)

SCSI Bus Interface Signals 3-15
Table 3.11 describes the signals for the SCSI Function B Signals group.
Table 3.11 SCSI Function B Interface Signals
Name Pin No. Type Strength Description
B_SD/[15:0],
B_SDP/[1:0] 119, 121, 122, 123,
91, 92, 93, 95, 108,
109, 111, 112, 113,
114, 116, 117, 118,
107,
R20, P18, P19,
P20, V15, W16,
Y17, V16, U19,
V20, U20, T18, T19,
T20, R18, P17,
R19, V19 I/O 48 mA
SCSI
SCSI Function B Data includes the following
data lines and parity signals: B_SD/[15:0]
(16-bit SCSI data bus), and B_SDP/[1:0]
(SCSI data parity bits).
B_SCTRL/ 98, 96, 101, 97,
103, 104, 106, 102,
100,
U16, W17, W18,
Y18, W19, Y20,
W20, Y19, V17 I/O 48 mA
SCSI
SCSI Function B Control includes the
following signals:
B_SC_D/
SCSI phase line, command/data
B_SI_O/ SCSI phase line, input/output
B_SMSG/ SCSI phase line, message
B_SREQ/ Data handshake line from target
device
B_SACK/ Data handshake signal from
initiator device
B_SBSY/ SCSI bus arbitration signal,
busy
B_SATN/ SCSI Attention, the initiator is
requesting a message out
phase
B_SRST/ SCSI bus reset
B_SSEL/ SCSI bus arbitration signal,
select device