Avago Technologies LSI53C876E - Manual (Page 89)

SCSI Bus Interface Signals 3-17
Table 3.13 describes the signals for the SCSI Function B Differential
Control Signals group.
Table 3.13 SCSI Function B Differential Control Signals
Name Pin No. Type Strength Description
B_SDIR[15:0]/ C10, D10, A9, C9,
W14, Y15, V14,
W15, N20, M17,
M18, M19, M20,
L19, L18, L20
O 4 mA Driver direction control for SCSI Function B
data lines.
B_SDIRP0/1 N19 O 4 mA Driver direction control for SCSI Function B
parity line.
B_BSYDIR Y14 O 4 mA Driver enable control for SCSI Function B
SBSY/ signal.
B_SELDIR W13 O 4 mA Driver enable control for SCSI Function B
SSEL/ signal.
B_RSTDIR V13 O 4 mA Driver enable control for SCSI Function B
SRST/ signal.
B_DIFFSENS Y16 I N/A SCSI Function B Differential Sense. This
pin detects the presence of an SE device
on a differential system. When external
differential transceivers are used and a
zero is detected on this pin, all SCSI
Function B chip outputs are 3-stated to
avoid damage to the transceivers. Tie this
pin HIGH during SE operation. The normal
value of this pin is 1.
B_IGS A8 O 4 mA SCSI Function B direction control for
initiator driver group.
B_TGS D9 O 4 mA SCSI Function B direction control for target
driver group.