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Asus LSI 896 Manual Manual pdf 4 page image

Asus LSI 896 Manual

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Asus LSI 896 Manual Manual pdf 4 page image
4 ASUS LSI SCSI User’s Manual1. Introduction1. IntroductionThe SCSI InterfaceThe SCSI functionality for the LSI integrated SCSI is contained within the LSIintegrated PCI-SCSI I/O Processor chip. The LSI integrated SCSI connectsdirectly to the two SCSI buses for SE or LVD SCSI applications and generatestiming and protocol in compliance with the SCSI standard. Each SCSI inter-face operates at a burst transfer rate of up to 40 Mbyte per second for widesingle-ended transfers, and up to 80 Mbyte per second for wide LVD SCSItransfers.The SCSI interfaces on the LSI integrated SCSI operates as two 16-bit, syn-chronous or asynchronous, single-ended or LVD, and supports Ultra2 SCSIprotocols and 16-bit arbitration. The LSI integrated SCSI provides autosensing,dual mode SE/LVD SCSI termination. Termination is normally enabled. Whena SCSI device is sensed to be connected to both connectors, LSI integratedSCSI termination is automatically disabled. The LSI integrated SCSI suppliesSCSI bus TERMPWR (termination power) through a blocking diode and self-resetting 1.5 A short circuit protection device. A 40 MHz oscillator is installedwith the LSI integrated SCSI to provide the clock frequency to the LSI inte-grated SCSI that is necessary to support Wide Ultra2 SCSI transfers of up to 80Mbytes/s.Wide Ultra2 SCSIThe LSI integrated SCSI has full support for Wide Ultra2 SCSI. This interface isan extension of the SCSI-3 family of standards that expands the bandwidth of theSCSI bus to allow faster synchronous data transfers, up to 80 Mbytes/s. WideUltra2 SCSI provides a doubling of the data rate over the Ultra2 SCSI interface,while it increases cable lengths and allows a larger number of devices on thecable than Ultra2 SCSI interfaces. Special SCSI cables are specified for opera-tion with Wide Ultra and Ultra2 SCSI devices, and you must consider the totalnumber of devices and the length of your SCSI bus when setting up your system.The cable provided is matched for a Fast/Ultra/Ultra2 SE or LVD operation.This cable also has built-in LVD termination since most Ultra2 hard disk drivesare not made with onboard LVD termination.
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This manual is suitable for:
LSI 1010-33LSI 1010-66LSI 896
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