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Hitachi HTS725050A9A364 Datasheet Page 118

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7K500 OEM Specification
Page 118 of 176
14.20
14.2014.20
14.20 Read Native Max A
Read Native Max ARead Native Max A
Read Native Max Address
ddressddress
ddress (F8h)
(F8h) (F8h)
(F8h)
Block Output Registers Command
Command Block Input Registers
Register 7
6
5
4
3
2
1
0
Register 7
6
5
4
3
2
1
0
Data -
-
-
-
-
-
-
-
Data -
-
-
-
-
-
-
-
Feature -
-
-
-
-
-
-
-
Error ...See Below...
Sector Count -
-
-
-
-
-
-
-
Sector Count -
-
-
-
-
-
-
-
LBA Low -
-
-
-
-
-
-
-
LBA Low V
V
V
V
V
V
V
V
LBA Mid -
-
-
-
-
-
-
-
LBA Mid V
V
V
V
V
V
V
V
LBA High -
-
-
-
-
-
-
-
LBA High V
V
V
V
V
V
V
V
Device -
L
-
-
-
-
-
-
Device -
-
-
-
H
H
H
H
Command 1
1
1
1
1
0
0
0
Status ...See Below...
Error Register
Status Register
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
CRC
UNC
0 IDN
0 ABT
T0N
AM
N
BSY
RDY
DF
DSC
DRQ
COR
IDX
ERR
0 0 0 0 0 V 0 0
0 V 0 - - 0 0 V
Table 86 Read Native Max Address Command (F8h)
This command returns the native max LBA/CYL of HDD which is not affected by Set Max Address
command.
The 48-bit native max address is greater than 268,435,455, the Read Native Max Address command
return a value of 268,435,455.
Output Parameters To The Device
L
LBA mode.Indicates the addressing mode.L=0 specifies CHS mode and L=1 does LBA
addressing mode.
D
The device number bit. Indicates that the device number bit of the Device Register
should be specified. D=0 selects the master device and D=1 selects the slave device.
-
Indicates that the bit is not used.
Input Parameters From The Device
LBA Low
In LBA mode, this register contains native max LBA bits 0 - 7. (L=1)
In CHS mode, this register contains native max LBA Low. (L=0)
LBA High/Mid
In LBA mode, this register contains native max LBA bits 8 - 15 (Mid), 16 - 23 (High).
(L=1)
In CHS mode, this register contains native max cylinder number. (L=0)
H
In LBA mode, this register contains native max LBA bits 24 - 27. (L=1)
In CHS mode, this register contains native max head number.(L=0)
V
Valid. Indicates that the bit is part of an input parameter and will be set to 0 or 1 by the
device.
-
Indicates that the bit is not used.
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