LSI53C875 LSI Logic, LSI53C875 Datasheet - Page 25

• Manufacturer Part Number: LSI53C875
• Description: PCI to Ultra SCSI I/O Processor
• Manufacturer: LSI Logic

2.1 SCSI Functional Description
2.1.1 SCSI Core
Chapter 2
Functional Description
Chapter 2 is divided into the following sections:
The LSI53C875 is composed of three functional blocks: the
the
supported by SDMS software, a complete software package that
supports the LSI Logic product line of SCSI processors and controllers.
The PCI Bus Power Management support (LSI53C875E) is discussed
Section 2.6, “Power Management.”
The SCSI core supports the 8-bit or 16-bit data bus. It supports Ultra
SCSI synchronous transfer rates up to 40 Mbytes/s, SCSI synchronous
transfer rates up to 20 Mbytes/s, and asynchronous transfer rates up to
10 Mbytes/s on a 16-bit wide SCSI bus. The SCSI core can be
programmed with SCSI SCRIPTS, making it easy to “fine tune” the
system for specific mass storage devices or SCSI-3 requirements.
LSI53C875/875E PCI to Ultra SCSI I/O Processor
DMA
Section 2.1, “SCSI Functional Description”
Section 2.2, “Designing an Ultra SCSI System”
Section 2.3, “Prefetching SCRIPTS Instructions”
Section 2.4, “External Memory Interface”
Section 2.5, “PCI Cache Mode”
Section 2.6, “Power Management”
Core, and the
SCRIPTS
Processor. The LSI53C875 is fully
SCSI
Core,
2-1