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5-14 C141-E120-02EN
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 code (Bit) Parameters used
76543210FRSCSNCYDH
READ SECTOR(S) 0 0 1 0 0 0 0 R N Y Y Y Y
READ MULTIPLE 1 1 0 0 0 1 0 0 N Y Y Y Y
READ DMA 1 1 0 0 1 0 0 R N Y Y Y Y
READ VERIFY SECTOR(S) 0 1 0 0 0 0 0 R N Y Y Y Y
WRITE MULTIPLE 1 1 0 0 0 1 0 1 N Y Y Y Y
WRITE DMA 1 1 0 0 1 0 1 R N Y Y Y Y
WRITE VERIFY 00111100NYYYY
WRITE SECTOR(S) 0 0 1 1 0 0 0 R N Y Y Y Y
RECALIBRATE 0 0 0 1 X X X X N N N N D
SEEK 0 1 1 1XXXXNNYYY
INITIALIZE DEVICE PARAMETERS 1 0 0 1 0 0 0 1 N Y N N Y
IDENTIFY DEVICE 11101100NNNND
IDENTIFY DEVICE DMA 1 1 1 0 1 1 0 0 N N N N D
SET FEATURES 11101111YN*NND
SET MULTIPLE MODE 1 1 0 0 0 1 1 0 N Y N N D
SET MAX 1 1 1 1 1 0 0 1 N Y Y Y Y
READ NATIVE MAX ADDRESS 1 1 1 1 1 0 0 0 N N N N D
EXECUTE DEVICE DIAGNOSTIC 1 0 0 1 0 0 0 0 N N N N D*
READ LONG 0010001RNYYYY
WRITE LONG 0011001RNYYYY
READ BUFFER 1 1 1 0 0 1 0 0 N N N N D
WRITE BUFFER 1 1 1 0 1 0 0 0 N N N N D
IDLE 1
1
0
1
0
1
1
0
0
0
1
0
1
1
1
1
NYNND
Command name