Fujitsu MAS3735, MAP3367, MAP3147, MAP3735, MAS3367 specifications Format Commands Format Unit

3.3 Format Commands

The values specified in the "Logical block address" field and "Block count" field in the CDB are disregarded and if any unwritten data exist in the data buffer, writing of all those data to the disk media is performed.

If bit 1 of CDB byte 1, the "Immed (immediate) bit, is "1," a GOOD status is reported immediately at the point when the legality of the CDB is confirmed and the command is terminated. If this bit is "0," a GOOD status is reported at the point when writing of the unwritten data in the data buffer is completed and the command is terminated.

3.3Format Commands

3.3.1 FORMAT UNIT (04)

	Bit	7	6	5		4	3	2	1	0
Byte
0						X‘04’
1			LUN			FmtData	CmpLst	Defect List Format
2		0	0	0		0	0	0	0	0
3					Interleave factor (MSB)
4					Interleave factor (LSB)
5		0	0	0	0		0	0	0	Link

This command initializes (formats) the entire area of the disk media that can be accessed from the INIT (User Space). At the same time, the IDD also implements defect management processing, allocating alternate blocks for defective portions of the disk media in accordance with the specifications in this command.

Furthermore, when the disk media is initialized with any of the following format attributes changed, the INIT must issue the MODE SELECT or MODE SELECT EXTENDED command before issuing this command and specify those format attributes in advance.

•Logical data block length

•Logical data block count

•User space cylinder count

•Spare sector count for alternate blocks

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