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DP-MA5/MA9
CIRCUIT DESCRIPTION
4. Servo Signal Processor : CXA13720 (IC2)
Outline
CXA1372Q
is a bipolar IC developed to be used for
processing of the RF signal (Focus OK, mirror, defect,
comparator of EFM) and servo control.
Functions
Auto asymmetry
control
Focus OK detection circuit
Mirror detection circuit
Defect detection and countermeasure
circuit
EFM comparator
Focus
servo
control
Tracking servo control
Thread servo control
4-2. Block diagram
19404
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4-1, Pin connection
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b ASY
b
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@3) XLT
RFI G9)
@2) CLK
RFO >
@) LOCK
DVEE @)
@d) DIRC
T2C
AVEE
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CXA1372Q
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G8) SSTOP
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(@) ISET
ATSC @)
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(8) SL-
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(4) SLO
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