Data Sheet

ATA-Disk Chip

SST58SD008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192

SST58LD008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192

19

©2001 Silicon Storage Technology, Inc.

S71167-05-000

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3.2 ATA-Disk Chip Command Description

This section defines the software requirements and the format of the commands the host sends to the ADC. Commands

are issued to the ADC by loading the required registers in the command block with the supplied parameters, and then

writing the command code to the Command Register. The manner in which a command is accepted varies. There are

three classes (see Table 3-2) of command acceptance, all dependent on the host not issuing commands unless the

ADC is not busy (BSY=0).

3.2.1 ATA-Disk Chip Command Set

Table 3-2 summarizes the ADC command set with the paragraphs that follow describing the individual commands

and the task file for each.

TABLE

Class

Command

Code

1. FR - Features Register

2. SC - Sector Count Register

3. SN - Sector Number Register

4. CY - Cylinder Registers

5. DH - Drive/Head Register

6. LBA - Logical Block Address Mode Supported (see command descriptions for use)

1

Check Power Mode

E5H or 98H

-

-

-

-

D8

-

1

Execute Drive Diagnostic

90H

-

-

-

-

D

-

2

Format Track

50H

-

7. Y - The register contains a valid parameter for this command.

-Y

8. For the Drive/Head Register:

Y means both the ADC and Head parameters are used;

D means only the ADC parameter is valid and not the Head parameter.

Y

1

Identify Drive

ECH

-

-

-

-

D

-

1

Idle

E3H or 97H

-

Y

-

-

D

-

1

Idle Immediate

E1H or 95H

-

-

-

-

D

-

1

Initialize Drive Parameters

91H

-

Y

-

-

Y

-

1

Read Buffer

E4H

-

-

-

-

D

-

1

Read Long Sector

22H or 23H

-

-

Y

Y

Y

Y

1

Read Multiple

C4H

-

YYYY

Y

1

Read Sector(s)

20H or 21H

-

YYYY

Y

1

Read Verify Sector(s)

40H or 41H

-

YYYY

Y

1

Recalibrate

1XH

-

-

-

-

D

-

1

Seek

7XH

-

-

YYY

Y

1

Set Features

EFH

Y

-

-

-

D

-

1

Set Multiple Mode

C6H

-

Y

-

-

D

-

1

Set Sleep Mode

E6H or 99H

-

-

-

-

D

-

1

Stand By

E2H or 96H

-

-

-

-

D

-

1

Stand By Immediate

E0H or 94H

-

-

-

-

D

-

2

Write Buffer

E8H

-

-

-

-

D

-

2

Write Long Sector

32H or 33H

-

-

Y

Y

Y

Y

3

Write Multiple

C5H

-

YYYY

Y

2

Write Sector(s)

30H or 31H

-

YYYY

Y

3

Write Verify

3CH

-

YYYY

Y

T3-2.1 391