Fujitsu MAV2073RC, MAV2036RC manual Track skew/head skew, Sector format

Data Format

Track skew

Head

Track skew

Head skew

Head

Leadinglogical

sector inhead p+1

Figure 3.5 Track skew/head skew

The number of physical sectors (track skew factor and head skew factor) corresponding to the skew time varies depending on the logical data block length because the track skew and the head skew are managed for individual sectors. The IDD automatically determines appropriate values for the track skew factor and the head skew factor according to the specified logical data block length. The value can be read out by the MODE SENSE or MODE SENSE EXTENDED command after the track has been formatted.

3.1.4Sector format

Each sector on the track consists of an ID field, a data field, and a gap field which separates them. Figure 3.6 gives sector format examples.

SCT								SCT
PLO	SM1	DATA1	SM2	DATA2	BCRC	ECC	PAD
G1 Sync								G2

SCT Servo

PLO	SM1	DATA1	SM2	DATA3	PAD G2
G1 Sync

SCT

PLO	SM1 DATA1 SM2 DATA4 BCRC ECC PAD G3
G1 Sync

Figure 3.6 Sector format

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