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3. Spindle Servo Circuit
3-1. Spindle Servo Process
55
F
E
D
C
A
B
H
G
Pick-up
Wobble Signal
Generator
RF
IC121 AN22113A
WBLIN
EFM
SRF
SERVO DSP
Phase Controller
Frequency
Controller
68
SPDRV
IC201 MN103SA6G
IC301 BD7956FS
M
Spindle Motor
L
e
vel S
h
if
t
3-2. Spindle Servo
Spindle servo is as following ;
1) Wobble CLV 4x, 10x, 16x, 24x, 32x, 40x : Blank area in CD-R, CD-RW
2) Wobble CLV 1x, 2x, 2.4x, 4x, 8x : Blank area in DVD+/-R/RW
3) CD 15x CAV : Video CD, CD-DA(Audio out)
4) CD 32x CAV : CD-RW, CD-DA(DAE)
5) CD 40x CAV : CD-ROM/R
6) DVD 8x CAV : Single Layer DVD-ROM(Movie), Dual Layer DVD-ROM, DVD+RW, DVD-RW, DVD+R
Double Layer
7) DVD 10x CAV : DVD+R, DVD-R
6) DVD 16x CAV : Single layer DVD-ROM(Data)
-Spindle Servo is controlled by IC201(MN103SA6G) and servo signal is output via SP-DRV(Pin70).
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