Avago Technologies LSI53C120 - Manual (Page 14)

6 LSI20101/LSI20102 SCSI Bus Boards
2.4.1 Power Connector J1
The DC power interface receives a standard disk drive power plug. There
is a fuse between the + 5 V connector and the SCSI bus TERMPWR
connectors. See
Table 1 for J1 signal assignments.
2.4.2 SCSI Connectors J2 and J3
The SE SCSI interface on the LSI20101 board operates as a 16-bit,
synchronous or asynchronous SCSI bus and accommodates 8-bit SCSI
transfers. The signal definitions conform to the SCSI-2 SE standard. The
SCSI interface connectors J2 and J3 are both 68-pin, high density,
latching right-angle receptacles, and the pin definitions conform to the
X3T9.90-048 SE P cable recommendation. SCSI TERMPWR can also
be supplied by the board.
Table 2 shows the signal assignments for J2
and J3.
Table 1 Power Connector J1
J1-Pin Number Signal Name
1 Open
2 GND
3 GND
4 +5 V