ATAPI InterfaceChapter 5

Log Select command

Bit

7

 

6

5

 

4

 

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

Operation code (4Ch)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

Reserved

 

 

 

PCR

Reserved

 

 

 

 

 

 

 

 

 

 

 

2

 

01(PC)

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

(MSB)

 

 

 

Parameter List Length

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

(LSB)

 

 

 

 

 

 

 

 

 

 

 

 

9

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The PC (Page Control) field is 01, for current values. The Parameter List Length field specifies the number of data bytes to transfer. If the PCR bit is 1 and the Parameter List Length is 0, the error counters are all reset (0).

All of the counters defined in the Log Sense command are reset by the Log Select command and are otherwise only cleared by a power-on (hard) or ATAPI reset.

STT8000A Product Manual

Page 43

Page 51
Image 51
Seagate STT8000A manual Log Select command