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1.3.3 Ultra SCSI
1-4
A 40 MHz oscillator is installed on the LSI8751SP to provide the clock
frequency to the LSI53C875J that is necessary to support Wide
Fast-20 SCSI transfers of up to 40 Mbytes/s.
The LSI8751SP fully supports Ultra SCSI as well as Fast SCSI
simultaneously. Ultra SCSI (also known as Fast-20 SCSI) is an extension
of the SCSI-3 family of standards that expands the bandwidth of the
SCSI bus, allowing faster synchronous data transfers.
Special SCSI cables are specified for operation with Ultra SCSI devices.
You must consider the total number of devices and length of your SCSI
bus when setting up your system. See
LSI8751SP,"
for a more detailed explanation of SCSI bus connections.
Using the LSI8751SP
Chapter 2, "Installing the
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