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5.40 Set Max ADDRESS (F9h)
Table 83: Set Max ADDRESS command (F9h)
Command Block Output Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7
6
5
CRC UNC
0
0
0
0
If this command is immediately preceded by a Read Native Max Address command, the device regards it as a Set
Max Address command. The device receives this command without a prior Read Native Max Address command
and regards it as a Set Max security extensions command according to feature register value.
Valid features values are as shown below:
• 01h indicates Set Max Set Password command
• 02h indicates Set Max Lock command
• 03h indicates Set Max Unlock command
• 04h indicates Set Max Freeze LOCK command
This command overwrites the maximum number of Addresses of the drive in a range of actual device capacity.
When the device receives this command, all accesses beyond that Address are rejected with setting ABORT bit in
status register. Identify Device Command returns the Address which is set via this command as a default value.
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 command aborted for a second nonvolatile Set Max Address command until the next power on
or hardware reset.
The device returns command aborted during Set Max Locked mode or Set Max Frozen mode.
After a successful command completion, Identify Device response words (61:60) shall reflect the maximum
address set with this command.
If the 48-bit Address feature set is supported, the value placed in Identify Device response words (103:100) shall be
the same as the value placed in words (61:60). However, if the device contains greater than 268,435,455 sectors,
the capacity addressable with 28-bit commands, and the address requested is 268,435,455, the max address shall be
changed to the native maximum address, the value placed in words (61:60) shall be 268,435,455 and the value
placed in words (103:100) shall be the native maximum address.
7 6 5 4 3 2 1 0
- - - - - - - -
V V V V V V V V
- - - - - - - 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
1 L 1 D H H H H
1 1 1 1 1 0 0 1
4
3
2
1
IDN
0
ABT T0N AMN
0
0
V
0
Deskstar 7K500 Hard Disk Drive Serial ATA Addendum
Command Block Input Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
0
7
6
5
BSY RDY DF DSC DRQ
0
0
V
0
129
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
- - - - H H H H
see below
Status Register
4
3
2
1
COR IDX
-
-
0
-
0
ERR
V
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