Maxtor 10K V Mode Select 10 Command 55h, 85MODE Select 10 Command Descriptor Block-Data Format

5.13MODE SELECT (10) Command (55h)

The MODE SELECT (10) command allows the initiator to modify certain mode pages and thereby control some of the drive’s operational characteristics. Refer to MODE SELECT (6) for additional descriptions. See Table 5-85 for the data format of the MODE SELECT (10) Command Descriptor Block. See MODE SELECT (6), Table 5-88, for descriptions of the fields. See Table 5-86 for the Mode Parameter Header (10 Byte) — Data Format and Table 5-87 for the Mode Parameter Block Descriptor – Data Format. See Table 5-48 for mode parameter block field descriptions.

Table 5-85MODE SELECT (10) Command Descriptor Block-Data Format

Bit	7	6	5	4		3	2	1	0
Byte
0				Operation	Code (55h)
1		Reserved		PF			Reserved		SP
2 - 6				Reserved
7 - 8				Parameter List Length
9				Control

Table 5-86Mode Parameter Header (10-Byte)-Data Format

Bit	7	6	5		4		3	2	1	0
Byte
0 - 1					Mode Data Length					(MSB)
	(LSB)
2					Medium Type
3				Device-Specific Parameter
4 - 5						Reserved
6 - 7				Block Descriptor Length						(MSB)
	(LSB)

Table 5-87Mode Parameter Block Descriptor-Data Format

Bit	7	6	5	4	3	2	1	0
Byte
0 - 3				Number of Blocks				(MSB)
	(LSB)
4				Density Code
5 - 7				Block Length				(MSB)
	(LSB)

Maxtor Atlas 10K V 5-63