Datasheet
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
7654321 0 76543 21 0
CRC UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ COR IDX ERR
00000V0 0 0V0-- 0- V