Read Max Address Command [F8H] - Hitachi C4K60 - Travelstar Slim - Hard Drive Specifications

7.5.21. Read Max Address Command [F8h]

Task File Registers
Command
LBA High
LBA Mid
LBA Low
Device/Head
Sector Count
Features
The READ NATIVE MAX command returns the native maximum 28-bit LBA or cylinders of the device which
is not affect by SET MAX ADDRESS command or SET MAX ADDRESS EXT command. The data returned
in the command block registers is the maximum device size as shown in the following tables.
Task File Registers
LBA High
LBA Mid
LBA Low
Device/Head
Sector Count
If the 48-bit Address feature set is supported and the 48-bit native max address is greater than 268,435,455,
the READ NATIVE MAX ADDRESS command returns a maximum 28-bit LBA value of 268,435,454.
K6610170
Rev.2
Dec 22, 2004
7 6 5 4
X L X DRV
7 6 5 4
L = 0: Native Maximum Cylinder bit 15 - 8
L = 1: Native Maximum LBA bit 23 - 16
L = 0: Native Maximum Cylinder bit 7 - 0
L = 1: Native Maximum LBA bit 15 - 8
L = 0: Native Maximum Sector Number
L = 1: Native Maximum LBA bit 7 - 0
- L - DRV L = 0: Native Max Head
- 86 -
3 2 1
F8h
XX
XX
XX
X X X
XX
XX
3 2 1
L = 1: Native Max LBA
bit 27 - 24
XX
0
X
0