4.1.3Set Features command

This command controls the implementation of various features that the drive supports. When the drive receives this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an inter- rupt. If the value in the register does not represent a feature that the drive supports, the command is aborted. Power-on default has the read look-ahead and write caching features enabled. The acceptable values for the Features register are defined as follows:

Table 8:

 

Features register values

 

 

 

02H

 

Enable write cache (default).

03H

 

Set transfer mode (based on value in Sector Count register).

 

 

Sector Count register values:

 

 

 

 

 

 

 

00H

 

Set PIO mode to default (PIO mode 2).

 

 

 

 

 

 

 

01H

 

Set PIO mode to default and disable IORDY (PIO mode 2).

 

 

 

 

 

 

 

08H

 

PIO mode 0

 

 

 

 

 

 

 

09H

 

PIO mode 1

 

 

 

 

 

 

 

0AH

 

PIO mode 2

 

 

 

 

 

 

 

0BH

 

PIO mode 3

 

 

 

 

 

 

 

0CH

 

PIO mode 4 (default)

 

 

 

 

 

 

 

20H

 

Multiword DMA mode 0

 

 

 

 

 

 

 

21H

 

Multiword DMA mode 1

 

 

 

 

 

 

 

22H

 

Multiword DMA mode 2

 

 

 

 

 

 

 

40H

 

Ultra DMA mode 0

 

 

 

 

 

 

 

41H

 

Ultra DMA mode 1

 

 

 

 

 

 

 

42H

 

Ultra DMA mode 2

 

 

 

 

 

 

 

43H

 

Ultra DMA mode 3

 

 

 

 

 

 

 

44H

 

Ultra DMA mode 4

 

 

 

 

 

 

 

45H

 

Ultra DMA mode 5

 

 

 

 

05H

 

Enable advanced power management

 

 

 

55H

 

Disable read look-ahead (read cache) feature.

 

 

 

82H

 

Disable write cache.

 

 

 

AAH

 

Enable read look-ahead (read cache) feature (default).

 

 

 

F1H

 

Report full capacity available

 

 

 

 

 

Note. At power-on or after a hardware or software reset the default values of the features are as indicated above.

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LD25 Series PATA Product Manual, Rev. C

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Maxtor LD25 Series manual Set Features command, Features register values
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LD25 Series specifications

The Maxtor LD25 Series represents a significant advancement in portable storage technology, embodying a blend of performance, reliability, and user-friendly features. Designed for both personal and professional usage, this series caters to the diverse needs of users who require a dependable solution for data storage and transfer.

One of the main features of the Maxtor LD25 Series is its lightweight and compact design. Weighing only a few hundred grams, it easily fits into a backpack or laptop bag, making it ideal for users on the go. This portability does not compromise its durability; the LD25 drives are engineered to withstand the rigors of travel, with robust outer casings that provide protection against drops and impacts.

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Data security is a top priority for many users, and the Maxtor LD25 Series addresses this need effectively. The included software features data encryption options that help protect sensitive files from unauthorized access. Additionally, the drive's integration with backup management software streamlines the process of backing up important documents, ensuring that crucial data is always safeguarded.

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In conclusion, the Maxtor LD25 Series stands out as a versatile and reliable portable storage solution, combining essential features, advanced technology, and robust security measures. Whether for personal or professional use, it fulfills the demands of modern data management, making it a preferred choice for users across various fields.
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