Hitachi HTS543212L9SA00 Manual Do Utilizador

5K320 SATA OEM Specification

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11.1 Register naming convention

This specification uses the same naming conventions for the Command Block Registers as the
ATA8-ACS standard. However, the register naming convention is different from that uses in the
Serial ATA 2.6 specification. The following table defines the corresponding of the register names
used in this specification with those used in the Serial ATA 2.6 specification.

Serial ATA register

name

Register name in this

specification when
writing registers

Register name in this

specification when
reading registers

Features

Feature current

Features (exp)

Feature previous

Sector count

Sector count current

Sector count HOB=0

Sector count (exp)

Sector count previous

Sector count HOB=1

LBA low

LBA low current

LBA low HOB=0

LBA low (exp)

LBA low previous

LBA low HOB=1

LBA mid

LBA mid current

LBA mid HOB=0

LBA mid (exp)

LBA mid previous

LBA mid HOB=1

LBA high

LBA high current

LBA mid HOB=0

LBA high (exp)

LBA high previous

LBA mid HOB=1

Device

Command

N/A

Control

Device Control

N/A

Status

N/A

Status

Error

N/A

Error

Table 24 Register naming convention and correspondence

11.2 Command register

This register  contains the command code  being sent to the device. Command execution  begins
immediately after this register is written. The command set is shown in  “Table 40 Command set” on
page 75.

All other registers required for the command must be set up before writing the Command Register.