Filter
Top Products
LSI53C875A Benefits Summary 1-7
• Up to one megabyte of add-in memory support for BIOS and
SCRIPTS storage.
• Reduced SCSI development effort.
• Compiler-compatible with existing LSI53C7XX and LSI53C8XX
family SCRIPTS.
• Direct connection to PCI and SCSI SE.
• Development tools and sample SCSI SCRIPTS available.
• Five GPIO pins.
• Maskable and pollable interrupts.
• Wide SCSI, A or P cable, and up to 15 devices supported.
• Three programmable SCSI timers: Select/Reselect,
Handshake-to-Handshake, and General Purpose. The time-out
period is programmable from 100
µs 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.
1.4.5 Flexibility
The LSI53C875A provides:
• High level programming interface (SCSI SCRIPTS).
• Ability to program 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.
• Fetch, Master, and Memory Access control pins.
• Separate SCSI and system clocks.