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3-2 Ultra320 SCSI Host Adapter Board Characteristics

3.1.1 LSI20320 Single Channel Host Adapters

The LSI20320, LSI20320-R, LSI20320L and LSI20320H are single

channel Ultra320 SCSI to PCI-X host adapters that provide one Ultra320

SCSI channel. The SCSI Channel A interface for the LSI20320,

LSI20320-R and LSI20320L is made through connectors J1 and J3. See

Figure 3.1 for details. The SCSI Channel A interface for the LSI20320H

is made through connectors J2 and J4. See Figure 3.2 for details.

Features of the LSI20320 series of host adapters are:

• Single Ultra320 SCSI Channel

• Two SCSI connectors

– One external 68-pin very high density cable interconnect

(VHDCI) connection for LSI20320, LSI20320-R, and LSI20320L

– One external 68-pin high density connector for LSI20320H

– One internal 68-pin high density connector for all boards

• PCI Low Proﬁle bracket (LSI20320L only)

• LVD/SE termination

• LSI Logic Integrated Mirroring™ (IM) technology for boot volume and

operating system protection (IM is for the LSI20320-R only)

• Fusion-MPT Architecture

Details of the LSI20320, LSI20320-R, and LSI20320L host adapters are:

• J5: PCI and PCI-X, 64-bit, universal type board edge connector

• J1: 68-pin very high density cable interconnect shielded right-angle

external connector

• J3: 68-pin high density right-angle internal connector

• HDR2: 4-pin low density un-shrouded right-angle LED connector

• Subsystem Vendor ID: 0x1000

• Subsystem ID: 0x1060

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

Subsystem Vendor ID and Subsystem ID registers of the embedded

SCSI controller.

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