Hitachi HTS725050A9A364 Datasheet Page 77

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7K500 OEM Specification
Page 77 of 176
14.1
14.114.1
14.1 Check Power Mode (E5h/98h)
Check Power Mode (E5h/98h) Check Power Mode (E5h/98h)
Check Power Mode (E5h/98h)
Command Block Output Registers
Command Block Input Registers
Register 7
6
5
4
3
2
1
0
Register 7
6
5
4
3
2
1
0
Data -
-
-
-
-
-
-
-
Data -
-
-
-
-
-
-
-
Feature -
-
-
-
-
-
-
-
Error ...See Below...
Sector Count -
-
-
-
-
-
-
-
Sector Count V
V
V
V
V
V
V
V
LBA Low -
-
-
-
-
-
-
-
LBA Low -
-
-
-
-
-
-
-
LBA Mid -
-
-
-
-
-
-
-
LBA Mid -
-
-
-
-
-
-
-
LBA High -
-
-
-
-
-
-
-
LBA High -
-
-
-
-
-
-
Device -
-
-
-
-
-
-
-
Device -
-
-
-
-
-
-
-
Command 1
1
1
0
0
1
0
1
Status ...See Below...
Error Register
Status Register
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
CRC
UNC
0 IDN
0 ABT
T0N
AM
N
BSY
RDY
DF
DSC
DRQ
COR
IDX
ERR
0 0 0 0 0 V 0 0
0 0 0 - - 0 0 V
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 dev
ice is not in Standby or Sleep mode. Otherwise, the Sector Count
Register will be set to 0.
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