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Theory of Device Operation
4-16 C141-E202-01EN
Figure 4.7 Physical sector servo configuration on disk surface
W/R Recovery
Servo Mark
Gray Code
W/R Recovery
Servo Mark
Gray Code
W/R Recovery
Servo Mark
Gray Code
Erase Servo A Erase Servo A
Servo B Erase
Servo B
E
rase
Servo C Erase Servo C
Erase Servo D Erase
PAD
CYLn + 1
CYLn
C
YLn
–
1 (n: even number)
Diameter
direction
Circumference
Direction
Erase: DC erase
area
O
GB
Data area
I
GB
expand
S
ervo frame
(160 servo frames per revolution)