Fujitsu MBC2036RC, MBC2073RC, MBA3300RC, MBA3147RC, MBA3073RC specifications Mode Parameters

5.1 Mode Parameters

b.Parameters specifying track format (bytes 10, 11)

−Sector count/track

This parameter specifies the number of physical sectors per 1 track. In the HDD, the number of physical sectors in a track is set unilaterally according to the data format specified by the "Data Block Length" parameter in the block descriptor or the "Data byte length/Physical sector" parameter in this page descriptor, so this parameter cannot be changed. The HDD disregards the value specified in this field. This parameter indicates the value of zone specified in Active Notch of Page C. If it is 1, this parameter indicates the value in zone 0.

c.Parameters specifying sector format (bytes 12 to 19)

−Data byte length/physical sectors

This parameter specifies the data length per 1 physical sector as the number of bytes.

If 0 is specified in this parameter, the value calculated based on the value of the "Data block length" in the block descriptor is used as this parameter value.

−Interleave factor

This parameter field has meaning only with the MODE SENSE and MODE SENSE EXTENDED commands. The interleave factor (in the HDD, this is always X '0001' :non interleave) of the disk drive's current data format. The value specified in this field is disregarded in the MODE SELECT and MODE SELECT EXTENDED commands.

−Track skew factor

This parameter indicates the number of physical sectors existing between the data block with the highest order logical block address on a track and the data block with the next logical block address on the next track of the same cylinder (track skew). This parameter cannot be changed.

The HDD disregards the value specified in this field and sets the optimum track skew value in the specified data block length. See Chapter 3, "Data Format" in the Product Manual for details about track skew. This parameter indicates the value of zone specified in active notch of Page C. If it is 1, this parameter indicates the value in zone 0.

−Cylinder skew factor

This parameter indicates the number of physical sectors existing between the data block with the highest order logical block address in a cylinder and the data block with the next logical block address in the next cylinder (cylinder skew). This parameter cannot be changed. The HDD disregards the value specified in this field and sets the optimum cylinder skew value in the specified data block length. See Chapter 3, "Data Format" in the Product Manual for details about cylinder skew. This parameter indicates the value of zone specified in active notch of Page C. If it is 1, this parameter indicates the value in zone 0.

d.Parameters related to device type (byte 20)

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