Seagate Ultra 320 - Manual (Page 56)

42 Parallel SCSI Interface Product Manual, Rev. A )
2.12.4 Transfer agreements
The transfer agreements that are in effect for various combinations of field values are described in Table 13.
Table 13: Transfer agreements
Transfer
agreement
REQ/ACK
offset
Transfer
period
factor
Transfer
width
exponent DT_REQ IU_REQ QAS_REQ
All other
protocol
options
Default 00h Any 00h 0 0 0 0
Asynchronous 00h Any Any 0 0 Any 0
Synchronous GE 01h GE 09h Any Any Any Any Any
ST synchronous GE 01h GE 0Ah Any 0 0 Any Any
DT synchronous GE 01h GE 09h 01h 1 Any Any Any
Paced GE 01h 08h 01h 1 1 Any Any
Wide Any Any 01h Any Any Any Any
Narrow Any Any 00h Any Any Any Any
Data group GE 01h Any 01h 1 0 Any Any
Information unit GE 01h Any 01h 1 1 Any Any
ST data GE 01h GE 0Ah Any 0 Any Any Any
DT data GE 01h Any 01h 1 Any Any Any