Set Max Address Ext (37H); Table 108 Set Max Address Ext Command (37H) - Hitachi 7K320 - Travelstar Mobile Hard Drive Specifications

14.37

Set Max Address Ext (37h)

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

Table 108 Set Max Address Ext Command (37h)

This command is immediately preceded by a Read Native Max Address Ext command.
This command overwrites the maximum number of Address of HDD in a range of actual device
capacity. Once device receives this command, all accesses beyond that Address are rejected with
setting ABORT bit in status register.
When the address requested is greater than 268,435,455, words (103:100) shall be modified to reflect
the requested value, but words (61:60) shall not modified. When the address requested is equal to or
less than 268,435,455, words (103:100) shall be modified to reflect the requested value, and words
(61:60) shall also be modified.
If this command is not supported, the maximum value to be set exceeds the capacity of the device, a
host protected area has been established by a Set Max Address command, the command is not
immediately preceded by a Read Native Max Address Ext command, or the device is in the Set Max
Locked or Set Max Frozen state, the device shall return command aborted.
The device returns the command aborted for a second non-volatile Set Max Address Ext command
until next power on.
Output Parameters To The Device
B
LBA Low Current
LBA Low Previous
LBA Mid Current
LBA Mid Previous
LBA High Current
LBA High Previous
Input Parameters From The Device
LBA Low (HOB=0)
7 6 5 4 3 2 1 0
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - - B
- - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
- 1 - - - - -
0 0 1 1 0 1 1 1
3 2 1 0
0 ABT T0N AMN
0 V 0 0
Option bit for selection whether nonvolatile or volatile. B=0 is volatile
condition. When B=1, Max Address which is set by Set Max Address
Ext command is preserved by POR. When B=0, Max Address which is
set by Set Max Address Ext command will be lost by POR.
Set Max LBA (7:0).
Set Max LBA (31:24).
Set Max LBA (15:8).
Set Max LBA (39:32).
Set Max LBA (23:16).
Set Max LBA (47:40).
Set Max LBA (7:0).
Page 139 of 176
7K320 (SATA) OEM Specification
Command Block Input Registers
Register
- Data Low
- Data High
- Error
-
Sector Count HOB=0 -
- HOB=1 -
LBA Low HOB=0 V V V V V V V V
HOB=1 V V V V V V V V
LBA Mid HOB=0 V V V V V V V V
HOB=1 V V V V V V V V
LBA High HOB=0 V V V V V V V V
HOB=1 V V V V V V V V
- Device
Status
Status Register
7 6 5
BSY RDY DF DSC DRQ COR IDX
0 V 0
7 6 5 4 3 2 1 0
- - - - -
- - - - -
...See Below...
- - - -
- - - -
- - - - -
...See Below...
4 3 2 1
- - 0 0
- - -
- - -
- - -
- - -
- - -
0
ERR
V