LSI LSI21002, Руководство пользователя

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1-2 Using the LSI21002
1.2 Features
This section provides a high level overview of the PCI Interface, the SCSI
Interface, and Board Characteristics for the LSI21002.
1.2.1 PCI Interface
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True PCI multifunction controller for maximum performance
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32-bit (33 MHz) DMA bus master
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Bursts up to 128 Dwords across the PCI Bus
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Zero wait-state bus master data bursts up to 110 Mbytes/s
(@33 MHz)
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Prefetches up to 8 Dwords of SCRIPTS instructions
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PCI Universal 3.3 V/5 V bus support
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Supports PCI write and invalidate, read line, and read multiple
commands
1.2.2 SCSI Interface
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Two separate SCSI channels
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Wide Ultra2 SCSI LVD synchronous transfers as fast as 80 Mbytes/s
(Channel B)
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Wide Ultra SCSI SE synchronous transfers as fast as 40 Mbytes/s
(Channel A)
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SCSI synchronous offset up to 31
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Supports variable block size and scatter/gather data transfers
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16-bit SE/LVD
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Four connectors:
50-pin high density for the external Channel A
50-pin narrow (ribbon) for internal Channel A
68-pin high density for internal Channels A and B
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Fast, Ultra, and Ultra2 data transfer capability
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SCSI termination power (TERMPWR) source with auto-resetting
circuit breaker and TERMPWR shorted LED for each channel