Features; Pci Interface; Scsi Interface - LSI LSI21002 User Manual

1.2 Features

1.2.1 PCI Interface

1.2.2 SCSI Interface

1-2
This section provides a high level overview of the PCI Interface, the SCSI
Interface, and Board Characteristics for the LSI21002.
•
True PCI multifunction controller for maximum performance
•
32-bit (33 MHz) DMA bus master
•
Bursts up to 128 Dwords across the PCI Bus
•
Zero wait-state bus master data bursts up to 110 Mbytes/s
(@33 MHz)
•
Prefetches up to 8 Dwords of SCRIPTS instructions
•
PCI Universal 3.3 V/5 V bus support
•
Supports PCI write and invalidate, read line, and read multiple
commands
•
Two separate SCSI channels
•
Wide Ultra2 SCSI LVD synchronous transfers as fast as 80 Mbytes/s
(Channel B)
•
Wide Ultra SCSI SE synchronous transfers as fast as 40 Mbytes/s
(Channel A)
•
SCSI synchronous offset up to 31
•
Supports variable block size and scatter/gather data transfers
•
16-bit SE/LVD
•
Four connectors:
50-pin high density for the external Channel A
50-pin narrow (ribbon) for internal Channel A
68-pin high density for internal Channels A and B
•
Fast, Ultra, and Ultra2 data transfer capability
•
SCSI termination power (TERMPWR) source with auto-resetting
circuit breaker and TERMPWR shorted LED for each channel
Using the LSI21002