11.5.6. Termination
Power
(TRMPWR)
Termination power must be supplied by at least one device on the SCSI bus, typically by the host
adapter. However, if you are sure that TRMPWR is not available in your system, you can
configure the FFD to supply TRMPWR.
Note that several devices can supply TRMPWR without affecting overall system performance or
causing damage to the drive or any other device on the bus. If TRMPWR is not available in the
system, then this will lead to intermittent errors and other problems. TRMPWR is enabled by
placing a jumper between pins 17-18.
Note: Termination power is not applicable for the 80-pin SCA connector disk type.
11.5.7. LED
Pins
The Access/Activity LED is set via pins 19-20 of the header.
11.5.8. 80-Pin
Connector
The 80-pin connecter is set via the header, as described in previous sections.
Please refer to Table 8 and Table 9 for connector interface parameters when using the 80-pin
interfaces for SE and LVD interfaces.
Figure 10: FFD 3.5” Ultra320 SCSI 80-Pin Connector
11.5.9. 68-Pin
Connector
The FFD with a 68-pin connector has an auxiliary connector between the power connector and
the 68-pin SCSI connector. This connector replicates some of the functions contained in the
header, enabling remote setting of the unit. In addition, remote LEDs can be connected to the
unit.
Figure 11: FFD 3.5” Ultra320 SCSI 68-Pin Connector
50
Product Specification and User Manual FFD 3.5" Ultra320 SCSI
43-PS-0305-00 Rev. 2.0
