Avago Technologies LSI53C896 - Manual (Page 27)

LSI53C896 Benefits Summary 1-9
Version 3.3 Copyright © 1998–2003 by LSI Logic Corporation. All rights reserved.
•
Three programmable SCSI timers: Select/Reselect,
Handshake-to-Handshake, and General Purpose. The time-out
period is programmable from 100
µ
s to greater than 25.6 seconds.
•
Software for PC-based operating system support.
•
Support for relative jumps.
•
SCSI Selected As ID bits for responding with multiple IDs.
1.5.5 Flexibility
The following features increase the flexibility of the LSI53C896:
•
Universal LVD transceivers are backward compatible with SE or HVD
devices.
•
High level programming interface (SCSI SCRIPTS).
•
Programs local and bus flash memory.
•
Selectable 112 or 944 byte DMA FIFO for backward compatibility.
•
Tailored SCSI sequences execute from main system RAM or internal
SCRIPTS RAM.
•
Flexible programming interface to tune I/O performance or to adapt
to unique SCSI devices.
•
Support for changes in the logical I/O interface definition.
•
Low level access to all registers and all SCSI bus signals.
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Fetch, Master, and Memory Access control pins.
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Separate SCSI and system clocks.
•
SCSI clock quadrupler bits enable Ultra2 SCSI transfer rates with a
40 MHz SCSI clock input.
•
Selectable IRQ pin disable bit.
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Ability to route system clock to SCSI clock.
•
Compatible with 3.3 V and 5 V PCI.