5.10LOG SELECT Command (4Ch)

The drive collects and stores performance data and error summaries in counters. The LOG SELECT command is used to zero these counters. The LOG SELECT command is a complementary command to the LOG SENSE command. The format of the LOG SELECT CDB and a description of the fields follows in Table 5-38and Table 5-39respectively.

Table 5-38LOG SELECT Command Descriptor Block-Data Format

 

Bit

7

 

6

5

 

4

 

3

 

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

Operation

Code (4Ch)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

Reserved

 

 

 

 

PCR

SP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

PC

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

– 6

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

– 8

 

 

 

 

 

Parameter List Length

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

 

 

 

 

 

Control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 5-39LOG SELECT Command Descriptor Block-Field Descriptions

Field

Description

 

 

PCR

Parameter Code Reset. Must be 1. Causes all the imple-

mented counters to be set to 0.

 

SP

Save Parameters. A value of 1 indicates that certain

counters are to be cleared from non-volatile memory.

 

PC

Page Control. Must be 01b OR 11b.

 

 

Parameter

Must be 0.

List Length

 

Maxtor Atlas 10K V

5-29