IBM DJSA-210 Hard Drive Specifications - Page 169

Set Max ADDRESS F9h, In LBA mode, the Head number of DEVICE/HEAD, the Cylinder High, and the Sector

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13.29 Set Max ADDRESS (F9h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature V V V V V V V V Sector Count B Sector Number V V V V V V V V Cylinder Low V V V V V V V V Cylinder High V V V V V V V V Device/Head 1 L 1 D H H H H Command 1 1 1 1 1 0 0 1 Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 00000V00 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count Sector Number V V V V V V V V Cylinder Low V V V V V V V V Cylinder High V V V V V V V V Device/Head - - - - H H H H Status see below Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 - - 0 -V Figure 106. Set Max ADDRESS (F9h) The Set Max ADDRESS command overwrites the max LBA/CYL of HDD in a range of actual device capacities. Once the device receives this command, all accesses beyond that LBA/CYL are rejected by setting the ABORT bit in the status register. Identify the device command and Identify the device DMA command returns the LBA/CYL which is set via this command as a default value. This command implement SET MAX security extension commands as subcommands. But regardless of Feature register value, the case this command is immediately preceded by a Read Native Max ADDRESS command, it is interpreted as a Set Max ADDRESS command. The Read Native Max ADDRESS command should be issued and completed immediately prior to issuing the Set Max ADDRESS command. If it is not, this command is interpreted as a Set Max security extension command which is designated by feature register. If Set Max security mode is in the Locked or Frozen, the Set Max ADDRESS command is aborted. For more information, see section 11.9.2, "Set Max security extension commands" on page 89. In CHS mode, Cylinder High, Cylinder Low specify the maximum cylinder number. The Head number of DEVICE/HEAD and Sector Number are ignored. The default value (see default CHS in Identify device information) is used for that. In LBA mode, the Head number of DEVICE/HEAD , the Cylinder High, the Cylinder Low, and the Sector Number specify the max LBA. This command will set this LBA as the max LBA of the device. Travelstar 32GH/30GT/20GN hard disk drive specifications 155

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13.29 Set Max ADDRESS (F9h)
see below
Status
1 1 1 1 1 0 0 1
Command
– – – – H H H H
Device/Head
1 L 1 D H H H H
Device/Head
V V V V V V V V
Cylinder High
V V V V V V V V
Cylinder High
V V V V V V V V
Cylinder Low
V V V V V V V V
Cylinder Low
V V V V V V V V
Sector Number
V V V V V V V V
Sector Number
– – – – – – – –
Sector Count
– – – – – – – B
Sector Count
see below
Error
V V V V V V V V
Feature
– – – – – – – –
Data
– – – – – – – –
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input Registers
Command Block Output Registers
V
–
0
–
–
0
V
0
0
0
V
0
0
0
0
0
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
Figure 106. Set Max ADDRESS (F9h)
The Set Max ADDRESS command overwrites the max LBA/CYL of HDD in a range of actual device
capacities. Once the device receives this command, all accesses beyond that LBA/CYL are rejected by
setting the ABORT bit in the status register. Identify the device command and Identify the device DMA
command returns the LBA/CYL which is set via this command as a default value.
This command implement SET MAX security extension commands as subcommands. But regardless of
Feature register value, the case this command is immediately preceded by a Read Native Max ADDRESS
command, it is interpreted as a Set Max ADDRESS command.
The Read Native Max ADDRESS command should be issued and completed immediately prior to issuing
the Set Max ADDRESS command. If it is not, this command is interpreted as a Set Max security extension
command which is designated by feature register.
If Set Max security mode is in the Locked or Frozen, the Set Max ADDRESS command is aborted.
For more information, see section 11.9.2, “Set Max security extension commands” on page 89.
In CHS mode, Cylinder High, Cylinder Low specify the maximum cylinder number. The Head number of
DEVICE/HEAD and Sector Number are ignored. The default value (see default CHS in Identify device
information) is used for that.
In LBA mode, the Head number of DEVICE/HEAD , the Cylinder High, the Cylinder Low, and the Sector
Number specify the max LBA. This command will set this LBA as the max LBA of the device.
Travelstar 32GH/30GT/20GN hard disk drive specifications
155