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7K200 SATA OEM Specification

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14.19 Read Native Max Address (F8h)

Block Output Registers Command

Command Block Input Registers

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

CRC UNC 0

IDN

0 ABT T0N

BSY RDY

DF DSC DRQ

COR IDX

ERR

0 0 0 0 0 V 0 0

0 V 0 - - 0 0 V

Table 85 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.

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)

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)

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.