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1-2 Describing the LSI22915A
Version 1.3 Copyright © 2000–2003 by LSI Logic Corporation. All rights reserved.
This guide, along with the PCI Storage Device Management System
SDMS
™
4.0 User’s Guide, contains product information and installation
instructions to help you gain the full benefits of the LSI22915A.
1.2 Features
This section provides a high-level overview of the PCI interface, the SCSI
interfaces, and other board characteristics of the LSI22915A.
1.2.1 PCI Interface
The PCI interface connection is made through edge connector J6, which is
shown in
Figure 2.1 on page 2-2 . The PCI interface includes these features:
•
Full 64-bit (66 MHz) DMA bus master
•
Zero wait-state bus master data bursts
•
PCI Universal 3.3 V/5 V bus support
•
Compliance with PC 99 Specification
•
Compliance with PCI Local Bus Specification, Revision 2.2
1.2.2 SCSI Interfaces
The LSI22915A has two 16-bit, synchronous or asynchronous, SE or LVD
interfaces. They support Ultra160 SCSI protocols and 16-bit arbitration.
The interface is made through connectors J1 and J3 for Channel A, and
J7 and J4 for Channel B. The SCSI interface includes these features:
•
Two separate SCSI channels
•
16-bit SE/LVD
•
Automatically enabled termination
•
Fast, Ultra, Ultra2, and Ultra160 data transfer capability
•
SCSI termination power (TERMPWR) source with autoresetting
circuit breaker and TERMPWR shorted LED for each channel
•
SCSI Plug and Play
•
SCSI Configured AutoMatically (SCAM)
•
Flash EEPROM for BIOS storage