B.2 Settings for the QAS, DT, and IU fields

Table C-3 provides valid bit combinations for the QAS, DT, and IU fields of the INQUIRY command’s Negotiated Rate Information Page (Section 5.11.2.7 of this manual). Only the combinations shown in the table are valid; all other combinations are reserved.

Table B-3

Settings for the QAS, DT, and IU Fields of the Negotiated Rate Information Page (INQUIRY

 

 

 

 

Command)

QAS

 

DT

IU

Description

 

 

 

 

 

0

0

 

0

Selects Single Transition phases. Use ST DATA IN and ST DATA

 

 

 

 

OUT phases to transfer data

 

 

 

 

 

0

1

 

0

Use DT DATA IN and DT DATA OUT phases with data group

 

 

 

 

transfers.

 

 

 

 

 

0

1

 

1

Use DT DATA IN and DT DATA OUT phases with information unit

 

 

 

 

transfers.

 

 

 

 

 

1

1

 

1

Use DT DATA IN and DT DATA OUT phases with information unit

 

 

 

 

transfers and use QAS for arbitration.

 

 

 

 

 

Maxtor Atlas 10K V B-3