Check Power Mode (E5H/98H); Table 43 Check Power Mode Command (E5H/98H) - Hitachi HTS542516K9SA00 Specifications

14.1 Check Power Mode (E5h/98h)

Command Block Output Registers
Register
Data
Feature
Sector Count
LBA Low
LBA Mid
LBA High
Device
Command
Error Register
7 6 5 4
CRC UNC 0 IDN
0 0 0 0

Table 43 Check Power Mode Command (E5h/98h)

The Check Power Mode command will report whether the device is spun up and the media is
available for immediate access.
Input Parameters From The Device
Sector Count The power mode code. The command returns FFh in the Sector Count Register if the spindle
motor is at speed and the device is not in Standby or Sleep mode. Otherwise, the Sector Count
Register will be set to 0.
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 1 1 0 0 1 0 1
3 2 1 0
0 ABT T0N AM
N
0 V 0 0
Page 76 of 171
5K250 (SATA) OEM Specification
Command Block Input Registers
Register
Data
Error
Sector Count
LBA Low
LBA Mid
LBA High
Device
Status
Status Register
7 6 5 4
BSY RDY DF DSC DRQ COR IDX ERR
0 0 0 -
7 6 5 4 3 2 1 0
- - - - - - - -
...See Below...
V V V V V V V V
- - - - - - - -
- - - - - - - -
- - - - - - -
- - - - - - - -
...See Below...
3 2 1 0
- 0 0 V