1.2 Features

This section provides an overview of the PCI interface, the SCSI interface, and board characteristics for the LSI8751D.

BIOS support for this host adapter is incorporated on the board in an 8 x 64 Kbytes Flash BIOS.

1.2.1 PCI Interface

PCI is a high-speed standard local bus for interfacing a number of I/O components to the processor and memory subsystems in a high-end PC. The PCI functionality for the LSI8751D is contained within the LSI53C875J PCI to SCSI I/O Processor chip. The LSI53C875J connects directly to the PCI bus and generates timing protocol that complies with the PCI specification.

The PCI interface on the LSI8751D supports these features:

Full 32-bit DMA bus master

Zero wait-state bus master data bursts

Universal 5 V or 3.3 V PCI bus voltage

PCI Local Bus Specification, Revision 2.1 compliance

1.2.2SCSI Interface

The SCSI functionality for the LSI8751D is contained within the LSI53875 controller chip. The LSI53C875 connects directly to the SCSI bus and generates timing and protocol in compliance with the SCSI standard.

The SCSI interface on the LSI8751D operates as a 16-bit, synchronous or asynchronous, HVD bus, and supports Ultra SCSI protocols and 16- bit arbitration. The LSI8751D provides HVD SCSI termination as a pluggable terminator. This terminator plugs into either the internal or external 68-pin high density connector (J2 or J3).

The SCSI interface for this board supports these features:

16-bit HVD

External plug-in termination supplied with board

1-2

Describing the LSI8751D