LSI 320 3.1.3 LSI22320 Dual Channel Host Adapters

3.1.3 LSI22320 Dual Channel Host Adapters

The LSI Logic LSI22320 and LSI22320-R are dual channel Ultra320 SCSI to PCI-X host adapters that provide two Ultra320 SCSI Channels. The SCSI Channel A interface is made through connectors J2 and J6. The SCSI Channel B interface is made through connectors J3 and J4. See Figure 3.4 for details.

Features of the LSI22320 and LSI22320-R host adapters are:

•Two independent Ultra320 SCSI channels

•Four SCSI connectors:

–Two external 68-pin very high density cable interconnect (VHDCI) connectors

–Two internal 68-pin high density connectors

•LVD/SE termination

•LSI Logic Integrated Mirroring (IM) technology for boot volume and operating system protection (IM is for the LSI22320-R only)

•Fusion-MPT architecture

Details of the LSI22320 and LSI22320-R host adapters are:

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

•J2 and J3: 68-pin very high density cable interconnect right-angle external connectors

•J4 and J6: 68-pin high density right-angle internal connectors

•J5: 4-pin low density un-shrouded right-angle LED connector

•Subsystem Vendor ID: 0x1000

•Subsystem ID: 0x1010

During system initialization, the system loads the ID numbers into the Subsystem Vendor ID and Subsystem ID registers of the embedded SCSI controller.

Figure 3.4 illustrates the LSI22320 or LSI22320-R host adapter board.

3-6	Ultra320 SCSI Host Adapter Board Characteristics

Rev. 2.0