Western Digital Ultrastar DC HC310 - Table 186 Read Native Max Address Ext (27 H)

210
Western Digital Hard Disk Drive OEM Specification
11.28 Read Native Max Address Ext (27h)
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 Low
-
-
-
-
-
-
-
-
Data Low
-
-
-
-
-
-
-
-
Data High
-
-
-
-
-
-
-
-
Data High
-
-
-
-
-
-
-
-
Feature
Current
-
-
-
-
-
-
-
-
Error
…See Below …
Previous
-
-
-
-
-
-
-
-
Sector Count
Current
-
-
-
-
-
-
-
-
Sector Count
HOB=0
-
-
-
-
-
-
-
-
Previous
-
-
-
-
-
-
-
-
HOB=1
-
-
-
-
-
-
-
-
Sector Number
Current
-
-
-
-
-
-
-
-
Sector Number
HOB=0
V
V
V
V
V
V
V
V
Previous
-
-
-
-
-
-
-
-
HOB=1
V
V
V
V
V
V
V
V
Cylinder Low
Current
-
-
-
-
-
-
-
-
Cylinder Low
HOB=0
V
V
V
V
V
V
V
V
Previous
-
-
-
-
-
-
-
-
HOB=1
V
V
V
V
V
V
V
V
Cylinder High
Current
-
-
-
-
-
-
-
-
Cylinder High
HOB=0
V
V
V
V
V
V
V
V
Previous
-
-
-
-
-
-
-
-
HOB=1
V
V
V
V
V
V
V
V
Device/Head
1
1
1
D
-
-
-
-
Device/Head
-
-
-
-
-
-
-
-
Command
0
0
1
0
0
1
1
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
AMN
BSY
RDY
DF
DSC
DRQ
COR
IDX
ERR
0
0
0
0
0
V
0
0
0
V
0
-
-
0
-
V
Table 186 Read Native Max Address Ext (27h)
This command returns the native max LBA of HDD which is not affected by Set Max Address Ext command.
Input Parameters From The Device
Sector Number (HOB=0)
LBA (7:0) of the address of the Native max address.
Sector Number (HOB=1)
LBA (31:24) of the address of the Native max address.
Cylinder Low (HOB=0)
LBA (15:8) of the address of the Native max address.
Cylinder Low (HOB=1)
LBA (39:32) of the address of the Native max address.
Cylinder High (HOB=0)
LBA (23:16) of the address of the Native max address.
Cylinder High (HOB=1)
LBA (47:40) of the address of the Native max address.