LSI U160 - Manual (Page 14)

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1-2 Using the LSIU160
used. BIOS support for this adapter is incorporated on the board in a
Flash memory device. The LSIU160 has a serial EEPROM device for
storing the user’s 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 LSI53C1010-33 PCI to Dual Channel Ultra3
SCSI Multifunction Controller Technical Manual.
This user’s guide, along with the PCI Storage Device Management
System SDMS 4.0 User’s Guide, contains a complete library of product
information and installation instructions. With this information, the full
benefits of the LSIU160 are available to you.
1.2 Features
This section provides a high-level overview of the PCI Interface , the SCSI
Interface , and Board Characteristics for the LSIU160.
1.2.1 PCI Interface
The PCI interface includes these features:
•
Complies with PCI 2.2 specification
•
Supports a 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
– Supports dual address cycle generation for all SCRIPTS
– Presents a single electrical load to the PCI Bus (True PCI
Multifunction Device)
•
Bursts 4/8, 8/16, 16/32, 32/64, or 64/128 Qword/Dword transfers
across the PCI bus
•
Supports 32-bit or 64-bit word data bursts with variable burst lengths