Chapter 5ATAPI Interface

Mode Sense command

Bit

7

 

6

 

5

 

4

 

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

Operation code (1Ah)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

Reserved

 

 

 

DBD

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

00(PC)

 

 

 

 

 

 

Page Code

 

 

 

 

 

 

 

 

 

 

 

 

3

(MSB)

 

 

 

Allocation Length

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

(LSB)

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The PC (Page Control) field is 00, since only current values are reported. If DBD (Disable Block Descriptor) is set (1), then the Mode Block Descriptor is not included in the data returned to the host. The Allocation Length field specifies the number of data bytes to transfer

The following pages are supported for Mode Select and Mode Sense commands.

Page Code

Description

11h

Medium Partition Page

2Ah

Capabilities and Mechanical Status Page

2Bh

Tape Parameters Page (MFM mode)

3Fh

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Page 48

STT8000A Product Manual

Page 56
Image 56
Seagate STT8000A manual Mode Sense command, Code Description