LSI53C875E LSI, LSI53C875E Datasheet

LSI53C875E

Manufacturer Part Number
LSI53C875E
Description
Manufacturer
LSI
Datasheet

Specifications of LSI53C875E

Lead Free Status / RoHS Status
Not Compliant
LSI53C875E
SCSI CONTROLLER
P C I - U L T R A S C S I C O N T R O L L E R
O V E R V I E W
chip to transfer SCSI data at up to 40 MBps across a 16-bit bus. Ultra SCSI
is an extension of the SCSI-3 standard that expands the bandwidth of the
SCSI bus and allows faster synchronous SCSI transfer rates-approximately
double the synchronous transfer rates of fast SCSI-2. The LSI53C875E provides
full SCSI-2 capabilities and reduces the requirements for system BIOS support
with a local memory interface. It also features LSI Logic TolerANT
and receiver technology, for reliable operation in all cabling environments. It
is designed to connect gluelessly to the Peripheral Component Interconnect
(PCI) bus, and supports PCI extended access cycles, enabling the system
architect to take advantage of PCI’s performance potential.
in PC and workstation environments. LSI Logic’s SDMS software package
supports the entire LSI53C8XX family of PCI-to-SCSI controllers plus a wide
range of SCSI peripheral devices.
a 4 KB static RAM for SCRIPTS (the LSI Logic developed SCSI programming
language) instruction storage, which allows tailored SCSI sequences to be
executed locally. A 536-byte DMA FIFO increases system performance by
allowing burst lengths of up to 128 transfers. Other features include:
• SCRIPTS instruction prefetch which permits fetching four or eight double
• Support for PCI extended access cycles: Memory Read Multiple, Memory
words of instructions or instruction operands.
Read Line, and Memory Write and Invalidate.
The LSI53C875E controller supports Ultra SCSI transfers, enabling the
The LSI53C875E and SDMS
Included in the performance-enhancing features on the LSI53C875E is
software provide a total Ultra SCSI solution
®
SCSI driver
B E N E F I T S
• Pin-for-pin replacement for
• Minimal software and hardware
• Compact 160-pin PQFP reduces
• Alternative 169 BGA package
• Direct PCI to SCSI connection
• Fully supported by SDMS
F E A T U R E S
• Performs wide high-speed SCSI
• SCRIPTS
• 536-byte buffer allows burst
• Load and store instruction
• 4 KB static RAM for SCRIPTS
• 32 additional scratchpad
The Communications Company
LSI53C825 and LSI53C825AE
devices
modifications required for Ultra
SCSI support
board space requirements
(LSI53C875E, LSI53C875JE)
(LSI53C875JBE)
software for complete PC-based
operating system support
bus transfers in single-ended
and differential mode up to:
• 40 MBps synchronous (Ultra)
• 14 MBps asynchronous
length of up to 128 transfers
instruction storage
registers for user-defined functions
Instruction Prefetch

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LSI53C875E Summary of contents

Page 1

... SCSI-3 standard that expands the bandwidth of the SCSI bus and allows faster synchronous SCSI transfer rates-approximately double the synchronous transfer rates of fast SCSI-2. The LSI53C875E provides full SCSI-2 capabilities and reduces the requirements for system BIOS support with a local memory interface. It also features LSI Logic TolerANT and receiver technology, for reliable operation in all cabling environments ...

Page 2

... LSI53C875E SCSI Controller • Selectable IRQ disable, allowing system designers to customize their system interface. • SCSI Selected as ID register, improving SCRIPTS coding and system tracking. • Load and Store instruction allows the programmer an efficient instruction option to load data directly to/from memory and from/to an internal register, reducing the number of l/O instructions to implement a SCRIPTS task ...

Page 3

... • LSI53C875JE — the LSI53C875E with JTAG availability and a 160-pin PQFP package • LSI53C875JBE — the LSI53C875E with a 169 BGA package • LSI8751SPE host adapter • LSI8751D host adapter Vdd PCI Bus LSI53C875E SCLK 40 MHz Oscillator CPU Baseboard Figure 1: LSI53C875E system diagram ...

Page 4

... LSI53C875E SCSI Controller For more information please visit the LSI Logic web site at: http://storageio.lsilogic.com LSI Logic Corporation North American Headquarters Milpitas, CA Tel: 800 574 4286 LSI Logic Europe Ltd. European Headquarters United Kingdom Tel: 44 1344 426544 Fax: 44 1344 481039 LSI Logic KK Headquarters ...

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