SFCF2048H1BO2TO-I-M0-523-SMA【PDF 56/101 页】FLASH SLC UDMA/MDMA/PIO 2G

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10 CF-ATA command description

This section defines the software requirements and the format of the commands the Host sends to the Card.

Commands are issued to the Card by loading the required registers in the command block with the supplied

parameters, and then writing the command code to the Command Register. There are three classes of command

acceptance, all dependent on the host not issuing commands unless the Card is not busy (BSY is ‘0’).

?

Class 1: Upon receipt of a Class 1 command, the Card sets BSY within 400ns.

?

Class 2: Upon receipt of a Class 2 command, the Card sets BSY within 400ns, sets up the sector buffer for a

write operation, sets DRQ within 700μs, and clears BSY within 400ns of setting DRQ.

?

Class 3:Upon receipt of a Class 3 command, the Card sets BSY within 400ns, sets up the sector buffer for a

write operation, sets DRQ within 20ms (assuming no re-assignments), and clears BSY within 400ns of

setting DRQ.

For reasons of backwar d compatibility some commands are implemented as ‘no operation’ NOP.

Table 56 summarizes the CF-ATA command set with the paragraphs that follow describing the individual

commands and the task file for each.

Table 56: CF-ATA Command Set(1)

Class

Command

Code

FR

SC

SN

CY

DH

LBA

1

Check Power Mode

E5h or 98h

D

1

Erase Sector(s)

C0h

Y

Y

Y

Y

Y

1

1

Execute Drive Diagnostic

Flush cache

90h

E7h

D

D

2

Format track

50h

Y

Y

Y

Y

1

Identify Drive

Ech

D

1

1

1

1

1

Idle

Idle Immediate

Initialize Drive Parameters

NOP

Read Buffer

E3h or 97h

E1h or 95h

91h

00h

E4h

Y

Y

D

D

Y

D

D

1

1

Read DMA

Read Multiple

C8

C4h

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

1

Read native max address

F8h

D

1

1

Read Sector(s)

Read Verify Sector(s)

20h or 21h

40h or 41h

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

1

1

Recalibrate

Request Sense

1Xh

03h

D

D

1

Seek

7Xh

Y

Y

Y

Y

1

1

1

1

1

1

Security Disable Password

Security Erase Prepare

Security Erase Unit

Security Freeze Lock

Security Set Password

Security Unlock

F6h

F3h

F4h

F5h

F1h

F2h

D

D

D

D

D

D

1

Set Features

EFh

Y

D

1

Set max address

F9h

Y

Y

Y

Y

Y

1

1

Set Multiple Mode

Set Sleep Mode

C6h

E6h or 99h

Y

D

D

1

S.M.A.R.T.

B0h

Y

Y

Y

D

1

1

Stand By

Stand By Immediate

E2h or 96h

E0h or 94h

D

D

1

Translate Sector

87h

Y

Y

Y

Y

Y

1

2

Wear Level

Write Buffer

F5h

E8h

Y

D

2

3

3

2

2

3

Write DMA

Write Multiple

Write Multiple w/o Erase

Write Sector(s)

Write Sector(s) w/o Erase

Write Verify

CA

C5h

CDh

30h or 31h

38h

3Ch

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

1.

FR = Features Register, SC = Sector Count Register, SN = Sector Number Register, CY = Cylinder Registers,

DH = Card/Drive/Head Register, LBA = Logical Block Address Mode Supported (see command descriptions for use),

Y – The register contains a valid parameter for this command. For the Drive/Head Register Y means both the CompactFlash

Memory Card and head parameters are used.

D – only the Compact Flash Memory Card parameter is valid and not the head parameter C – the register contains command

specific data (see command descriptors for use).

Swissbit AG

Industriestrasse 4

Swissbit reserves the right to change products or specifications without notice.

Revision: 1.20

CH-9552 Bronschhofen

Switzerland

www.swissbit.com

industrial@swissbit.com

C-320_data_sheet_CF-HxBO_Rev120.doc

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