For reasons of backward compatibility some commands are implemented as ‘no operation’ NOP.
Table 12 summarizes the Drive command set with the paragraphs that follow describing the individual
commands and the task file for each.
Table 12: ATA Command Set (1)
Command
Code
FR
SC
SN
CY
DH
LBA
Check Power Mode
E5h or 98h
D
Erase Sector(s) (CFA)
C0h
Y
Y
Y
Y
Y
Execute Drive Diagnostic
Flush cache
Identify Drive
90h
E7h
ECh
D
D
D
Idle
Idle Immediate
NOP
Read Buffer
E3h or 97h
E1h or 95h
00h
E4h
Y
D
D
D
D
Read DMA
Read Multiple
C8
C4h
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Read native max address
F8h
D
Read Sector(s)
Read Verify Sector(s)
20h
40h or 41h
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Request Sense (CFA)
Security Disable Password
Security Erase Prepare
Security Erase Unit
Security Freeze Lock
Security Set Password
Security Unlock
03h
F6h
F3h
F4h
F5h
F1h
F2h
D
D
D
D
D
D
D
Set Features
EFh
Y
D
Set max address (with set password)
F9h
Y
Y
Y
Y
Y
Set Multiple Mode
Sleep
C6h
E6h or 99h
Y
D
D
S.M.A.R.T.
B0h
Y
Y
Y
D
Standby
Standby Immediate
E2h or 96h
E0h or 94h
D
D
Translate Sector (CFA)
87h
Y
Y
Y
Y
Y
Write Buffer
E8h
D
Write DMA
Write Multiple
Write Multiple w/o Erase (CFA)
Write Sector(s)
Write Sector(s) w/o Erase (CFA)
CA
C5h
CDh
30h
38h
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 = 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 Drive and head
parameters are used.
D – only the Drive parameter is valid and not the head parameter C – the register contains command specific data (see
command descriptors for use).
Swissbit AG
Industriestrasse 4-8
Swissbit reserves the right to change products or specifications without notice.
Revision: 1.10
CH-9552 Bronschhofen
Switzerland
X-200m_data_sheet_SA-UxBR_Rev110.doc
Page 11 of 47
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