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AMM-1570/1572 User’s Guide
AMM-1570/1572 User’s Guide
Stock Number: 510526-00, Rev. B Page: 2-12
Print Spec Number: 492379-00
Current Date: 3/7/94 ECN Date: 3/8/94
Fast SCSI Operation
Pin pair FS determines whether the host adapter initiates support
for Fast SCSI Operation. The available settings are
Fast SCSI devices, including the AMM-1570/1572, are capable of
transferring data to and from the SCSI bus at speeds ranging from 5
to 10 MBytes/sec.
Fast SCSI Operation and Synchronous Negotiation are used in con-
junction to determine request for data transfer rates:
■ If both Fast SCSI Operation and Synchronous Negotiation is
enabled, the host adapter initiates a request for 10 MByte/sec
data transfer.
■ If Fast SCSI Operation is enabled and Synchronous Negotia-
tion is disabled, the Fast SCSI drive initiates a request for
10 MByte/sec data transfer.
■ If Fast SCSI Operation is disabled and Synchronous Negotia-
tion is enabled, the host adapter initiates a request for
5 MByte/sec data transfer.
■ If both Fast SCSI Operation and Synchronous Negotiation
are disabled, the Fast SCSI device initiates a request for
5 MByte/sec data transfer.
= Fast SCSI Operation Disabled * = Fast SCSI Operation Enabled
* = Default
FS FS