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Hitachi HDS723020BLA642 manual Set Max Address Ext 37h, Set Max Address Ext Command 37h

Models: HDS723020BLA642

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7K200 SATA OEM Specification

14.36Set Max Address Ext (37h)

 

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 Low

 

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

Data Low

 

 

 

-

 

-

 

-

 

-

-

 

-

 

-

 

-

 

Data High

 

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

-

 

Data High

 

 

 

-

 

-

 

-

 

-

-

 

-

 

-

 

-

 

Feature

 

 

Current

 

-

 

 

-

 

 

-

 

 

-

 

 

-

 

 

-

 

 

-

 

-

 

Error

 

 

 

 

 

 

 

 

 

 

 

...See Below...

 

 

 

 

 

 

 

 

 

 

Previous

 

-

 

 

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-

 

 

-

 

 

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-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sector Count

Current

 

-

 

 

-

 

 

-

 

 

-

 

 

-

 

 

-

 

 

-

 

B

 

Sector Count

 

HOB=0

-

 

-

 

-

 

-

-

 

 

-

 

-

 

 

-

 

 

 

 

 

Previous

 

-

 

 

-

 

 

-

 

 

-

 

 

-

 

 

-

 

 

-

 

-

 

 

 

 

 

 

HOB=1

-

 

 

-

 

-

 

-

-

 

 

-

 

-

 

 

 

-

 

LBA Low

Current

 

V

 

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

V

 

LBA Low

 

HOB=0

V

 

 

V

 

V

 

V

V

 

V

 

V

 

 

V

 

 

 

 

 

Previous

 

V

 

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

V

 

 

 

 

 

 

HOB=1

V

 

 

V

 

V

 

V

V

 

V

 

V

 

 

V

 

LBA Mid

Current

 

V

 

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

V

 

LBA Mid

 

HOB=0

V

 

 

V

 

V

 

V

V

 

V

 

V

 

 

V

 

 

 

 

 

Previous

 

V

 

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

V

 

 

 

 

 

 

HOB=1

V

 

 

V

 

V

 

V V V

V

 

 

V

 

LBA High

Current

 

V

 

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

V

 

LBA High

 

HOB=0

V

V

V

V

V

V

V

V

 

 

 

 

 

Previous

 

V

 

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

 

V

 

V

 

 

 

 

 

 

HOB=1

V

 

 

 

V

 

V

 

 

V

V

 

 

 

V

V

 

 

 

V

 

Device

 

 

 

 

-

 

1

 

-

 

-

 

-

 

-

 

-

 

-

 

Device

 

 

 

-

 

-

 

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Command

 

 

0

 

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1

 

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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

 

 

AMN

 

BSY

 

RDY

 

DF

DSC

DRQ

 

COR

IDX

ERR

0

 

0

 

0

0

0

 

 

 

 

 

V

 

 

 

0

 

 

 

0

 

 

0

 

V

 

0

 

-

 

-

 

 

0

 

0

 

 

V

Table 106 Set Max Address Ext Command (37h)

This command is immediately preceded by a Read Native Max Address Ext command.

This command overwrites the maximum number of Address of HDD in a range of actual device capacity. Once device receives this command, all accesses beyond that Address are rejected with setting ABORT bit in status register.

When the address requested is greater than 268,435,455, words (103:100) shall be modified to reflect the requested value, but words (61:60) shall not modified. When the address requested is equal to or less than 268,435,455, words (103:100) shall be modified to reflect the requested value, and words (61:60) shall also be modified.

If this command is not supported, the maximum value to be set exceeds the capacity of the device, a host protected area has been established by a Set Max Address command, the command is not immediately preceded by a Read Native Max Address Ext command, or the device is in the Set Max Locked or Set Max Frozen state, the device shall return command aborted.

The device returns the command aborted for a second non-volatile Set Max Address Ext command until next power on.

Output Parameters To The Device

B

Option bit for selection whether nonvolatile or volatile. B=0 is volatile

 

condition. When B=1, Max Address which is set by Set Max Address

 

Ext command is preserved by POR. When B=0, Max Address which is

 

set by Set Max Address Ext command will be lost by POR.

LBA Low Current

Set Max LBA (7:0).

LBA Low Previous

Set Max LBA (31:24).

LBA Mid Current

Set Max LBA (15:8).

LBA Mid Previous

Set Max LBA (39:32).

LBA High Current

Set Max LBA (23:16).

LBA High Previous

Set Max LBA (47:40).

Input Parameters From The Device

 

LBA Low (HOB=0)

Set Max LBA (7:0).

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Page 136 Page 138
Page 137
Image 137
Hitachi HDS723020BLA642 manual Set Max Address Ext 37h, Set Max Address Ext Command 37h
Page 136 Page 138

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.