Fujitsu MHA2032AT, MHA2021AT manual Command code and parameters 1

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			Command code (Bit)								Parameters used
	7	6		5	4	3	2	1	0	FR		SC	SN	CY	DH
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	0	0		1	1	1	1	0	0	N		Y	Y	Y		Y
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	1	X	X	X	X	N		N	Y	Y		Y
INITIALIZE DEVICE	1	0		0	1	0	0	0	1	N		Y	N	N		Y
PARAMETERS
IDENTIFY DEVICE	1	1		1	0	1	1	0	0	N		N	N	N		D
IDENTIFY DEVICE DMA	1	1		1	0	1	1	0	0	N		N	N	N		D
SET FEATURES	1	1		1	0	1	1	1	1	Y		N*	N	N		D
SET MULTIPLE MODE	1	1		0	0	0	1	1	0	N		Y	N	N		D
EXECUTE DEVICE DIAGNOSTIC	1	0		0	1	0	0	0	0	N		N	N	N		D*
READ LONG	0	0		1	0	0	0	1	R	N		Y	Y	Y		Y
WRITE LONG	0	0		1	1	0	0	1	R	N		Y	Y	Y		Y
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	0		0	1	0	1	1	1	N		Y	N	N		D
	1	1		1	0	0	0	1	1

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