Maxtor 98196H8 Specifications download pdf (Page 47)

INTERFACE COMMANDS

7 – 6

Mode Set/Check CommandsMode Set/Check Commands

Mode Set/Check Commands

Set Features ModeSet Features Mode

Set Features Mode

Enables or disables features supported by the drive. When the drive receives this command it:

1. Sets BSY,

2. Checks the contents of the Features register,

3. Clears BSY and

4. Generates an interrupt.

If the value of the register is not a feature supported by the drive, the command is aborted.

The acceptable values in the Features register are defined as follows:

VAL UE DESC RIPTION

02h Enabled Write Cache

03h Set Transfer Mode based on value in Sector Count register

05h Enable Advanced Power Management

42h Enable Automatic Acoustic Management. The sector count register c ontains the

Automatic Ac ous tic Management level.

SECTOR LEVEL

FFh Maxtor specific

FEh Maxi mum performance

81h-FDh Intermediate acoustic management levels

80h Minimum acoustic emanation level

00h-7Fh reserved

44h Length of data appended on Read Long/Write Long commands specified in the

Identify Device information

55h Disable Read Look-ahead feature

66h Di sable reverting to Power-on defaults

82h Disable Write Cache

85h Disable Advanced Power Management

AAh Enable Read Look-ahead feature

BBh 4 bytes of Maxtor specific data appended on Read Long/Write Long commands

C2h Disable Automatic Acoustic Management

CC h Enable reverting to Power-on defaults

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Maxtor 98196H8 Specifications Page 47