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Seagate U4 ST36421A User Manual

Page 31

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U4 Family Product Manual, Rev. D

23

3.2 ATA Interface commands

3.2.1 Supported ATA commands

The following table lists ATA-standard commands that the drive sup-
ports. For a detailed description of the ATA commands, refer to the

Draft

ATA-4 Standard. See Section 3.2.4 on page 30 for details and subcom-
mands used in the S.M.A.R.T. implementation.

Command name

Command code (in hex)

ATA-standard commands

Download Microcode

92

H

Execute Device Diagnostics

90

H

Flush Cache

E7

H

Format Track

50

H

Identify Device

EC

H

Initialize Device Parameters

91

H

Read Buffer

E4

H

Read DMA

C8

H,

C9

H

Read Multiple

C4

H

Read Sectors

20

H,

21

H

Read Verify Sectors

40

H,

41

H

Recalibrate

10

H

Seek

70

H

Set Features

EF

H

Set Multiple Mode

C6

H

S.M.A.R.T.

B0

H

Write Buffer

E8

H

Write DMA

CA

H,

CB

H

Write Multiple

C5

H

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