pc

10.25 pc 11.25 pc

38

34.5 pc

A.2.3 The SCSI Busy LED

The SCSI Activity LED interface on the LSIU160 is a four-wire arrangement that allows the user to connect an LED harness to the board. The buffered GPIO0_FETCH line (maximum output low voltage

0.4V and minimum output low current 16 mA) is pulled low to complete the circuit when a harness with an LED is attached. The SCSI Busy LED connector is J6. The signal definitions for the SCSI Busy LED connector are provided in Table A.6.

Table A.6 LED Connector J6

Signal Name

Pin

 

 

LED+

1

 

 

LED−

2

 

 

NC

3

 

 

NC

4

 

 

pc

A.3 Subsystem and Subsystem Vendor ID

The Subsystem ID and System Vendor ID for the LSIU160 are provided in Table A.7. The ID numbers are contained within the EEPROM of the LSIU160. During system initialization, the ID numbers are loaded into the Subsystem Vendor ID and Subsystem ID registers of the LSIU160 SCSI Controller (the LSI53C1010). For more information on the operation of the Subsystem Vendor ID and Subsystem ID registers, refer to the LSI53C1010 PCI to Dual Channel Ultra3 SCSI Multifunction Controller Technical Manual.

Table A.7 Subsystem and Subsystem Vendor ID

Subsystem

ID Number

 

 

Subsystem Vendor ID

1000

 

 

Subsystem ID

1030

 

 

A-10

Technical Specifications