7K200 SATA OEM Specification

14.2 Device Configuration Overlay (B1h)

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

 

 

 

 

1

 

0

 

1

 

 

 

0

 

 

 

V

 

 

V

 

 

V

 

V

 

Error

 

 

 

 

 

 

 

 

 

 

 

...See Below...

 

 

 

 

 

Sector Count

 

 

 

 

 

-

 

 

-

 

 

 

-

 

 

 

-

 

 

 

-

 

 

-

 

 

 

-

 

 

-

 

 

Sector Count

 

 

 

 

 

V

 

 

V

 

 

V

 

 

V

 

V

 

V

 

V

 

 

V

LBA Low

 

 

 

 

 

-

 

 

-

 

 

 

-

 

 

 

-

 

 

 

-

 

 

-

 

 

 

-

 

 

-

 

 

LBA Low

 

 

 

 

 

-

 

 

-

 

 

 

 

-

 

 

-

 

-

 

-

 

-

 

 

 

-

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

 

 

 

 

 

 

-

 

 

-

 

 

 

-

 

 

 

-

 

 

 

-

 

 

-

 

 

 

-

 

 

-

 

 

Device

 

 

 

 

 

 

-

 

 

-

 

 

 

 

-

 

 

-

 

-

 

-

 

-

 

 

 

-

Command

 

 

 

 

1

 

0

 

1

 

 

 

1

 

0

 

0

 

 

0

 

 

1

 

 

Status

 

 

 

 

 

 

 

 

 

 

 

 

...See Below...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status Register

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

6

5

4

 

3

 

 

 

 

2

 

 

 

 

1

 

 

 

 

0

 

 

 

 

 

7

 

6

 

5

 

4

3

 

 

 

 

2

 

 

 

1

 

 

0

 

CRC

 

UNC

0

IDN

 

0

 

 

 

 

ABT

 

T0N

 

 

 

AM

 

 

BSY

 

RDY

 

DF

 

DSC

DRQ

 

COR

 

IDX

 

ERR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

0

0

0

 

0

 

 

 

 

 

 

 

V

 

0

 

 

 

 

0

 

 

 

 

 

V

 

V

 

0

 

-

 

V

 

 

-

 

 

 

0

 

 

V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 44 Device Configuration Overlay Command (B1h)

Individual Device Configuration Overlay feature set commands are identified by the value placed in the Features register. The table below shows these Features register values.

Value

Command

C0h

DEVICE CONFIGURATION RESTORE

C1h

DEVICE CONFIGURATION FREEZE LOCK

C2h

DEVICE CONFIGURATION IDENTIFY

C3h

DEVICE CONFIGURATION SET

other

Reserved

Table 45 Device Configuration Overlay Features register values

14.2.1DEVICE CONFIGURATION RESTORE (subcommand C0h)

The DEVICE CONFIGURATION RESTORE command discard any setting previously made by a DEVICE CONFIGURATION SET command and return the content of the IDENTIFY DEVICE command response to the original settings as indicated by the data returned from the execution of a DEVICE CONFIGURATION IDENTIFY command.

14.2.2DEVICE CONFIGURATION FREEZE LOCK (subcommand C1h)

The DEVICE CONFIGURATION FREEZE LOCK command prevents accidental modification of the Device Configuration Overlay settings. After successful execution of a DEVICE CONFIGURATION FREEZE LOCK command, all DEVICE CONFIGURATION SET, DEVICE CONFIGURATION FREEZE LOCK, DEVICE CONFIGURATION IDENTIFY, and DEVICE CONFIGURATION RESTORE commands are aborted by the device. The DEVICE CONFIGURATION FREEZE LOCK condition shall be cleared by a power-down. The DEVICE CONFIGURATION FREEZE LOCK condition shall not be cleared by COMRESET or software reset.

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Hitachi HDS723020BLA642 manual Device Configuration Overlay B1h, Device Configuration Restore subcommand C0h
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HDS723020BLA642 specifications

The Hitachi HDS723020BLA642 is a high-performance hard disk drive that exemplifies the balance between reliability and advanced technology, making it an excellent choice for a range of applications, from desktop computers to enterprise storage solutions. This 2TB SATA hard drive is designed to meet the growing data storage needs of users who demand both speed and efficiency.

One of the key features of the HDS723020BLA642 is its impressive rotational speed of 7200 RPM. This speed facilitates faster data access and improved overall performance, significantly enhancing the user experience during data-intensive operations such as gaming, video editing, and large file transfers. Coupled with a SATA III interface, this drive facilitates data transfer rates of up to 6 Gb/s, providing an efficient conduit for moving data quickly between the hard drive and the motherboard.

The drive comes equipped with a large 64 MB cache, which plays a crucial role in buffering read and write operations. This substantial amount of cache memory allows the drive to temporarily store frequently accessed data, leading to reduced latency and enabling smoother multitasking capabilities. Users will benefit from faster load times and reduced wait periods when working with large files.

Reliability is another defining characteristic of the HDS723020BLA642. Hitachi, now a part of Western Digital, has a longstanding reputation for producing durable hard drives. This model incorporates advanced technologies, such as the Fluid Dynamic Bearing (FDB) for quieter operation and better longevity. The drive also features an enhanced error recovery system that minimizes the risk of data loss, making it a suitable option for both personal and professional use.

In terms of power efficiency, the HDS723020BLA642 is designed to consume less power during operation compared to older hard drive models. This efficiency not only helps in reducing operational costs but also contributes to a longer lifespan for the drive itself.

Overall, the Hitachi HDS723020BLA642 hard drive combines speed, reliability, and efficiency into a compact package, making it an ideal choice for users needing a substantial amount of storage without compromising on performance. Whether for upgrading an existing system or building a new one, this drive offers a blend of technology and durability that caters to modern storage demands.
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