Set Max Address (F9H); Figure 132. Set Max Address (F9H) - IBM IC35L040AVVN07-0 - 40GB IDE Deskstar 120GXP 7200RPM UATA-100 07N9682 Specifications

11.30 Set Max Address (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

Figure 132. Set Max Address (F9h)

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:
1. 01h indicates Set Max Set Password command
2. 02h indicates Set Max Lock command
3. 03h indicates Set Max Unlock command
4. 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.
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 0
IDN 0 ABT T0N AMN
0 0 V 0 0
Deskstar 120GXP hard disk drive specifications
Command Block Input
Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Status Register
7 6 5 4
BSY RDY DF DSC
0 V 0 –
156
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
3 2 1 0
DRQ COR IDX ERR
– 0 – V