LSI53C875 LSI Logic, LSI53C875 Datasheet - Page 21
LSI53C875
Manufacturer Part Number
LSI53C875
Description
PCI to Ultra SCSI I/O Processor
Manufacturer
LSI Logic
Datasheet
1.LSI53C875.pdf
(314 pages)
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1.4.2 PCI Performance
1.4.3 Integration
1.4.4 Ease of Use
To improve PCI performance, the LSI53C875:
The following features ease integration of the LSI53C875 into a system:
The following features of the LSI53C875 make the device user friendly:
LSI53C875 Benefits Summary
Complies with PCI 2.1 specification.
Bursts 2, 4, 8, 16, 32, 64, or 128 Dwords across PCI bus.
Supports 32-bit word data bursts with variable burst lengths.
Prefetches up to 8 Dwords of SCRIPTS instructions.
Bursts SCRIPTS opcode fetches across the PCI bus.
Performs zero wait-state bus master data bursts faster than
110 Mbytes/s (@ 33 MHz).
Supports PCI Cache Line Size register.
Supports PCI Write and Invalidate, Read Line, and Read Multiple
commands.
3.3 V/5 V PCI interface.
Full 32-bit PCI DMA bus master.
Memory Move instructions allow use as a third-party PCI bus DMA
controller.
High-performance SCSI core.
Integrated SCRIPTS processor.
Up to 1 Mbyte of add-in memory support for BIOS and SCRIPTS
storage.
Direct PCI to SCSI connection.
Reduced SCSI development effort.
Easily adapted to the Advanced SCSI Protocol Interface (ASPI) or
the ANSI Common Access Method (CAM), with SDMS software.
1-7
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