Avago Technologies LSI21040 - Manual (Page 12)

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1-2 Using the LSI21040
that works with the LSI53C1010. The flash memory device on the board
can incorporate the BIOS support for this host adapter. The LSI21040
has a serial EEPROM device for storing your SCSI bus configuration.
The LSI53C1010 also contains a SCSI SCRIPTS™ processor that
permits both DMA and SCSI commands to be fetched from host memory
or internal SCRIPTS RAM. Algorithms written in SCSI SCRIPTS control
the actions of the SCSI and DMA cores. The SCRIPTS processor
executes complex SCSI bus sequences independently of the host CPU.
For more information on the SCSI SCRIPTS Instruction Set used to write
these algorithms, refer to the SCSI SCRIPTS Processors Programming
Guide.
The PCI Storage Device Management System SDMS 4.0 User’s Guide
and this user’s guide contain a complete library of product information
and installation instructions. With this information, the full benefits of your
LSI21040 are available to you.
1.2 Features
This section provides an overview of the PCI Interface , the SCSI
Interface , and Board Characteristics for the LSI21040.
1.2.1 PCI Interface
PCI interfaces I/O components to the processor and memory
subsystems in equipment ranging from PCs to servers. The PCI interface
operates as a 64-bit DMA bus master capable of 64-bit addressing. The
LSI53C1010 contains the PCI functionality for the LSI21040.
The PCI interface includes these features:
•
Complies with PCI 2.2 specification
•
Complies with PCI Bus Power Management Specification Rev 1.1
•
Complies with PC99
•
Supports up to 64-bit/33 MHz PCI interface for 264 Mbytes/s
bandwidth that:
– Supports 64-bit DMA bus mastership with 64-bit addressing
– Operates at 33 MHz