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C141-E064-03EN3 - 8
3.1.4 Sector 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.
PAD
2
BCRC SCT
PAD
1
ECC
Servo
DATALBASB
m 404 24
PLO
Sync
G1
LC/LP models
SCT
DATA 2DATA 1LBASB
44
PLO
Sync
G1
SCT
PAD
2
PAD
1
PLO
Sync
G1
SB
4
BCRC ECC
402
PAD
3
SCT
PAD
1
PAD
2
BCRC SCT
PAD
1
ECC
Servo
DATASB
m 4044
PLO
Sync
G1
MC/MP models
SCT
DATA 2
MAE series MAF/MAG series
G1 4 bytes 4 bytes
PLO Sync 23 bytes 24 bytes
PAD 1 10 bytes 10 bytes
PAD 2 7 bytes 8 bytes
PAD 3 5 bytes 5 bytes
DATA 1SB
4
PLO
Sync
G1
SCT
PAD
2
PAD
1
PLO
Sync
G1
SB
4
BCRC ECC
404
PAD
3
SCT
PAD
1
Figure 3.6 Sector format
Each sector on the track consists of the following fields:
(1) Gaps (G1)
The gap length at the time of formatting (initializing) is listed in Figure 3.6. Pattern X'00' is
written on the gap field.
(2) PLO Sync
In this field, pattern X'00' in the length in bytes listed in Figure 3.6 is written.
(3) Sync Byte (SB)
In this field, special pattern in the length in bytes listed in Figure 3.6 is written.