Set Max Address Ext (37H); Figure 100 Set Max Address Ext Command (37H) - Hitachi HTS541616J9AT00 - Travelstar 160 GB Hard Drive Specifications

14.36 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

Figure 100 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.
If the device in Address Offset mode receives this command with the nonvolatile option, the device returns aborted
error to the host.
The device returns the command aborted for a second non-volatile Set Max Address Ext command until next power
on or hardware reset.
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)
LBA Low (HOB=1)
Travelstar 5K160 (PATA) Hard Disk Drive Specification
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 - D - - -
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. B=1 is not
valid when the device is in Address Offset mode.
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).
Set Max LBA (31:24).
148 / 188
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 4
BSY RDY DF DSC DRQ COR IDX
0 V 0 -
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
...See Below...
- - - - - - -
- - - - - - -
V - - - - - - -
...See Below...
3 2 1 0
ERR
- 0 - V