Hitachi hard disk 0J11285 500 GB 2.5 " 8 MB 0J11285 Ficha De Dados
Códigos do produto
0J11285
Z5K500 OEM Specifications
42
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.
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.
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
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.
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
specification when writing
registers
Register name in this
specification when reading
registers
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 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