3.1.3 LSI21320 Dual Channel Host Adapters

The LSI21320 series of host adapters are dual channel Ultra320 SCSI host adapters that provide two Ultra320 SCSI channels. The SCSI Channel A interface is made through connectors J2 and J4. The SCSI Channel B interface is made through connector J3. See Figure 3.3 for details.

Features of the LSI21320 series of host adapters are:

•two independent Ultra320 SCSI channels

•three SCSI connectors:

–one external 68-pin HD connector

–two internal 68-pin HD connectors

•LVD/SE termination

•Integrated RAID (IR) solution applies to the ‘‘R’’ cards only

•Fusion-MPT architecture

Details of the LSI21320 series of host adapters are:

•J1: PCI and PCI-X, 64-bit, universal type board edge connector

•J2: 68-pin HD cable right-angle external connector

•J3 and J4: 68-pin HD right-angle internal connectors

•J6: 4-pin low density unshrouded right-angle LED connector

•Subsystem Vendor ID and Subsystem IDs are:

Host Adapter

Chip

Subsystem Vendor ID

Subsystem ID

 

 

 

 

LSI21320

1030

0x1000

10D0

 

 

 

 

LSI21320-R

1030

0x1000

30E0

 

 

 

 

During system initialization, the system loads the ID numbers into the

Subsystem Vendor ID and Subsystem ID registers of the embedded

SCSI controller.

Figure 3.3 illustrates the LSI21320 series of host adapter board.

3-6

Ultra320 SCSI Host Adapter Characteristics

Version 2.2

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