beautypg.com

4 transfer agreements – Seagate Ultra 160 User Manual

Page 56

background image

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

See also other documents in the category Seagate Hardware: