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Interface
When the BSY bit is 1 or the DRQ bit is 1 (the device is requesting the data
transfer) and the host system writes to the command register, the correct device
operation is not guaranteed.
5.3.1 Command code and parameters
Table 5.3 lists the supported commands, command code and the registers that
needed parameters are written.
Table 5.3 Command code and parameters (1 of 2)
Command name
READ SECTOR(S)
READ MULTIPLE
READ DMA
READ VERIFY SECTOR(S)
WRITE MULTIPLE
WRITE DMA
WRITE VERIFY
WRITE SECTOR(S)
RECALIBRATE
SEEK
INITIALIZE DEVICE PARAMETERS 1
IDENTIFY DEVICE
IDENTIFY DEVICE DMA
SET FEATURES
SET MULTIPLE MODE
SET MAX
READ NATIVE MAX ADDRESS
EXECUTE DEVICE DIAGNOSTIC
READ LONG
WRITE LONG
READ BUFFER
WRITE BUFFER
IDLE
5-14
Command code (Bit)
7
6
5
4
3
2
0
0
1
0
0
0
1
1
0
0
0
1
1
1
0
0
1
0
0
1
0
0
0
0
1
1
0
0
0
1
1
1
0
0
1
0
0
0
1
1
1
1
0
0
1
1
0
0
0
0
0
1
X
X
0
1
1
1
X
X
0
0
1
0
0
1
1
1
0
1
1
1
1
1
0
1
1
1
1
1
0
1
1
1
1
0
0
0
1
1
1
1
1
1
0
1
1
1
1
1
0
1
0
0
1
0
0
0
0
1
0
0
0
0
0
1
1
0
0
1
1
1
0
0
1
1
1
1
0
1
0
1
0
0
1
0
1
1
1
1
0
0
0
Parameters used
1
0
FR SC SN CY DH
0
R
N
Y
Y
Y
0
0
N
Y
Y
Y
0
R
N
Y
Y
Y
0
R
N
Y
Y
Y
0
1
N
Y
Y
Y
1
R
N
Y
Y
Y
0
0
N
Y
Y
Y
0
R
N
Y
Y
Y
X
X
N
N
N
N
X
X
N
N
Y
Y
0
1
N
Y
N
N
0
0
N
N
N
N
0
0
N
N
N
N
1
1
Y N* N
N
1
0
N
Y
N
N
0
1
N
Y
Y
Y
0
0
N
N
N
N
0
0
N
N
N
N D*
1
R
N
Y
Y
Y
1
R
N
Y
Y
Y
0
0
N
N
N
N
0
0
N
N
N
N
1
1
N
Y
N
N
1
1
C141-E104-03EN
Y
Y
Y
Y
Y
Y
Y
Y
D
Y
Y
D
D
D
D
Y
D
Y
Y
D
D
D
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