Interface
5-14 C141-E104-02EN
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 paramet ers ( 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 11000100NYYYY
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 11000101NYYYY
WRITE DMA 1100101RNYYYY
WRITE VERIFY 00111100NYYYY
WRITE SECTOR(S) 0011000RNYYYY
RECALIBRATE 0 0 0 1 X X X X N N N N D
SEEK 01 1 1 XXXXNNYYY
INITIALIZE DEVICE PARAMETERS10010001NYNNY
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 11000110NYNND
SET MAX 11111001NYYYY
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
10
10
11
00
01
01
11
1NYNND
Command name