3.2.6LSI21003 Host Adapter

The LSI21003 PCI to Dual Channel Ultra160 SCSI host adapter (Figure 3.6) provides 16-bit LVD and SE SCSI solutions for your computer. Channel A supports only the SE mode, while channel B supports LVD and SE modes of operation.

The LSI21003 host adapter has these features:

•Ultra SCSI Wide SE for channel A to 40 Mbytes/s per data transfer; Ultra160 SCSI for channel B to 160 Mbytes/s per data transfer

•Four connectors

–One external 50-pin high density connection

–Two internal 68-pin high density connections

–One internal 50-pin low density legacy connection for channel A

•Channel A is SE only with autosense termination

•Channel B is SE or LVD with termination permanently enabled

Figure 3.6 LSI21003 Mechanical Drawing

J2 Channel A - Ultra SCSI Wide SE J6 LED J5 Channel B - Ultra160 SCSI LVD/SE

J4 Channel A - Ultra SCSI Wide SE

A Terminators

B Terminators

J3

Channel A

Ultra SCSI

Wide SE

LSI53C1010

J1 - PCI

Note:

•J1: PCI 32-bit, universal type board edge connector.

•J2 and J5: 68-pin high density shielded latching right-angle internal connectors.

•J3: 50-pin high density shielded right-angle external connector.

•J4: 50-pin low density shrouded vertical internal connector.

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

•Subsystem Vendor ID is 1000.

•Subsystem ID is 1050.

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Ultra160 SCSI to PCI Host Adapter Characteristics