Travelstar 80GN Hard Disk Drive Specification
133
13.18 Read Native Max ADDRESS (F8h)
Table 89: Read Native Max ADDRESS (F8h)
This command returns the native max LBA/CYL of the drive which is not effected by the Set Max ADDRESS
command. Even if the Address Offset mode is enabled, the native max LBA/CYL is returned.
The 48-bit native max address is greater than 268,435,455, the Read Native Max Address command returns a value
of 268,435,455.
Output parameters to the device
L
LBA mode. This indicates the addressing mode. L = 0 specifies CHS mode and L = 1
specifies the LBA addressing mode.
D
This is the device number bit. Indicates that the device number bit of the Device/Head
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 the native max LBA bits 0–7. (L = 1)
In CHS mode this register contains the native max LBA Low. (L = 0)
LBA High/Mid
In LBA mode this register contains the native max LBA bits 8–15 (Mid) and bits 16–23
(High). (L = 1)
In CHS mode this register contains the native max cylinder number. (L = 0)
H
In LBA mode this register contains the native max LBA bits 24–27. (L = 1)
In CHS mode this register contains the native maximum 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.
-
This indicates that the bit is not used
Command Block Output Registers
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
1 L 1 D - - - -
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
AMN
BSY RDY
DF
DSC
DRQ
COR IDX
ERR
0
0
0
0
0
V
0
0
0
V
0
-
-
0
-
V
Содержание IC25N020ATMR04
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