1.2Features

This section provides a high level overview of the PCI Interface, the SCSI Interface, and Board Characteristics for the LSIU80ALVD.

1.2.1PCI Interface

•Full 32-bit DMA bus master

•Zero wait-state bus master data bursts up to 133 Mbytes/s (@ 33 MHz)

•Universal 3.3 V and 5 V PCI bus voltage support

•Supports 32-bit 33 MHz data bursts with variable burst lengths

•Bursts 2 to 128 dwords across the PCI bus

•Prefetches up to 8 Dwords of SCRIPTs instructions

•Supports PCI Write and Invalidate, Read Line, and Read Multiple commands

1.2.2SCSI Interface

•Supports 16-bit LVD and SE signaling

•Includes 4 Kbytes RAM for SCRIPTs instruction storage

•Automatically enables LVD or SE termination

•Contains external 68-pin high density (HD) and internal 68-pin HD latching connectors

•Performs wide Ultra2 SCSI LVD synchronous transfers up to 80 Mbytes/s

•SCSI synchronous offset up to 31

•Provides SCSI termination power (TERMPWR) source with autoresetting circuit protection device

•SCSI Configured AutoMatically (SCAM) Level 1 Capability (Set “OFF” by default)

•Flash ROM for BIOS storage for up to 256 Kbytes

•Supports variable block size and scatter/gather data transfers

1-2

Using the LSIU80ALVD