Table 62.Check Power Mode Command (E5H/98H) - Hitachi T7K250 - Deskstar - Hard Drive Specifications

12.1 Check Power Mode (E5h/98h)
Table 62: Check Power Mode command (E5h/98h)
Command Block Output Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7 6 5
CRC UNC 0
0 0 0
The Check Power Mode command will report whether the device is spun up and the media is available for immedi-
ate access.
Input parameters from the device
Sector Count
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 - 1 D - - - -
1 1 1 0 0 1 0 1
4 3 2 1
IDN 0 ABT T0N AMN
0 0 V 0
This indicates the power mode code. The command returns FFh in the Sector Count Reg-
ister if the spindle motor is at speed and the device is not in Standby or Sleep mode. Other-
wise, the Sector Count Register is set to 0.
Deskstar T7K250 Hard Disk Drive Specification
Command Block Input Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
0 7 6
BSY RDY DF DSC DRQ
0 0 V
117
7 6 5 4 3 2 1 0
- - - - - - - -
see below
V V V V V V V V
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
see below
Status Register
5 4 3 2
COR IDX
0 - - 0
1 0
ERR
- V