5.3 Host Commands

 

 

 

 

 

 

Word

Value

Description

 

 

 

 

 

 

 

20

X’0000’

Undefined

 

 

 

 

 

 

 

21

X’0000’

Undefined

 

 

 

 

 

 

 

22

X’0004’

Number of ECC bytes transferred at READ LONG or

 

 

 

 

WRITE LONG command

 

 

 

 

 

 

 

23-26

Firmware revision (ASCII code) *3

 

 

 

 

 

 

 

27-46

Model name (ASCII code) *4

 

 

 

 

 

 

 

47

X’8010’

Maximum number of sectors per interrupt on

 

 

 

 

READ/WRITE MULTIPLE command

 

 

 

 

 

 

 

48

X’0000’

Reserved

 

 

 

 

 

 

 

49

X’0B00’

Capabilities *5

 

 

 

 

 

 

 

50

X’0000’

Reserved

 

 

 

 

 

 

 

51

X’0200’

PIO data transfer mode *6

 

 

 

 

 

 

 

52

X’0000’

Reserved

 

 

 

 

 

 

 

53

X’0007’

Enable/disable setting of words 54-58 and 64-70, 88 *7

 

 

 

 

 

 

 

54

(Variable)

Number of current Cylinders

 

 

 

 

 

 

 

55

(Variable)

Number of current Head

 

 

 

 

 

 

 

56

(Variable)

Number of current sectors per track

 

 

 

 

 

 

 

57-58

(Variable)

Total number of current sectors

 

 

 

 

 

 

 

59

*8

Transfer sector count currently set by READ/WRITE

 

 

 

 

MULTIPLE command *8

 

 

 

 

 

 

 

60-61

X’60F600’

Total number of user addressable sectors (LBA mode only)

 

 

 

X’7A2F80’

MHC2032AT: X’60F600’

 

 

 

 

MHC2040AT: X’7A2F80’

 

 

 

 

MHD2021AT: X’409980’

 

 

 

 

MHD2032AT: X’60F600’

 

 

 

 

 

 

 

62

X’0000’

Reserved

 

 

 

 

 

 

 

63

X’xx07’

Multiword DMA transfer mode *9

 

 

 

 

 

 

 

64

X’0003’

Advance PIO transfer mode support status *10

 

 

 

 

 

 

 

65

X’0078’

Minimum multiword DMA transfer cycle time per word :

 

 

 

 

120 [ns]

 

 

 

 

 

 

 

66

X’0078’

Manufacturer’s recommended DMA transfer cycle time :

 

 

 

 

120 [ns]

 

 

 

 

 

 

 

67

X’00F0’

Minimum PIO transfer cycle time without IORDY flow

 

 

 

 

control : 240 [ns]

 

 

 

 

 

 

 

68

X’0078’

Minimum PIO transfer cycle time with IORDY flow control

 

 

 

 

: 120 [ns]

 

 

 

 

 

 

C141-E050-02EN

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Image 104
Fujitsu MHC2032AT, MHD2021AT, MHC2040AT, MHD2032AT manual Number of current Cylinders

MHC2040AT, MHC2032AT, MHD2032AT, MHD2021AT specifications

Fujitsu offers a range of advanced hard disk drives (HDD) designed for various computing needs, including the MHD2021AT, MHD2032AT, MHC2032AT, and MHC2040AT models. These drives combine reliable performance, capacity options, and technological features aimed at enhancing data storage efficiency.

The Fujitsu MHD2021AT is known for its capacity of 20 GB, making it an excellent choice for users requiring a compact and efficient HDD. With a spindle speed of 5400 RPM, it balances speed and power consumption, catering to mobile computing and lower power devices. Its ATA interface ensures compatibility with a wide range of systems, making it a versatile option for various applications.

The MHD2032AT model offers a slightly higher capacity of 30 GB, maintaining similar technological attributes to its predecessor. With an enhanced data transfer rate, it allows for quicker access to stored files, perfect for users handling larger volumes of data. The robust error correction features in this model further ensure data integrity, making it a reliable choice for demanding environments.

For users needing more robust storage solutions, the MHC2032AT steps it up with features tailored for performance-heavy applications. Its 30 GB capacity is suited for desktop and workstation environments that require swift data retrieval and significant storage. The drive employs advanced caching techniques, which boost performance further by optimizing read and write operations, ensuring smoother multitasking capabilities.

The MHC2040AT is the flagship model in this line, providing an impressive storage capacity of 40 GB. This HDD is designed for high-performance applications where speed is crucial. The drive’s increased spindle speed and superior data transfer rates make it ideal for video editing, gaming, and large database management. Alongside its enhanced performance features, it includes advanced thermal management technology that maintains optimal operational temperatures, prolonging the drive's lifespan.

All four models leverage Fujitsu's commitment to data reliability, featuring robust shock resistance and low noise levels. Collectively, these drives cater to a spectrum of user needs, from compact data storage to high-capacity solutions, maintaining Fujitsu's reputation for quality and innovation in the storage market.