Hitachi hard disk 0J11285 500 GB 2.5 " 8 MB 0J11285 Ficha De Dados

Códigos do produto

0J11285

Z5K500 OEM Specifications

11.1

11 Registers

In Serial ATA, the host adapter contains a set of registers that shadow the contents of the traditional
device registers, referred to as the Shadow Register Block. Shadow Register Block registers are
interface registers used for delivering commands to the device or posting status from the device. About
details, please refer to the Serial ATA Specification.

In the following cases, the host adapter sets the BSY bit in its shadow Status Register and transmits a
FIS to the device containing the new contents.

 Command register is written in the Shadow Register Block

 Device Control register is written in the Shadow Register Block with a change of state of the

SRST bit

 COMRESET is requested

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

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 Device Device

Command Command N/A

Control Device

Control

N/A

Status N/A

Status

Error N/A

Error

Table 24 Register naming convention and correspondence