Nakamichi DVD-15, Service Manual

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CYC12MP000 (Read Channel) - IC201 on DVD Main P.C.B. Ass’y
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AGC-CAP
AGCVRF
VDD 3
AGCL VL
VSS 5
AGCINN
AGCINP
VMIDI
LOENV
VIN
HIENV
RSLICE
RIREF
VBG
PWDNB
TRSON XRFOK
PLLOK
SEN SCK
SDVIO
FREQ
RFCP
DMSRVM
DMSRDT
DMSRVM
DMSRCK
XCLK
VSS 1
UP
DOWN
JITOUT
VDD2 FCPO RPCP VDD4 DSRF EX-T-SD SLDTIN BF2 BF1 VBF2 VBF1 VI2 VI1 VOUT VO2 VO1 LZ3V VSS 4 RIREF2
VSS 3
PLFLT
VCOIN
PDWIN
VDD 1
SRD
PDCK
VSS 2
ADJDSRFD
CAP5
RJIT
JITFLR
JITOVR
LZ3V
VO1 VO2 V11 V12
VBF1 VBF2
BF2 BF1
Vout
AGC
FILTER
D/A D/A
DIFF_IO_
SINGLE
CONVERTER
(8X)
MUX
TW/2
VCO_IN
DLY_
A
A
A
A
A
A
A
A A A
PD
PREQ-CP
CP
VCO
SYNC
ON
RECP
U O
OUT
TRI_STATE
UP DOWN
DSPF_IN VELOCITY DETECTOR
VCO_IN
PULSE_CTRL
XCK/3456 DT
ADDR3_D(0..3)
VCO/3456 CK
XCK
DLY_DATA
RJIT
JITFLR
OVER
VCO_IN
JITOUT
JIT
A
LOGIC
5 5
VBG
DATA
SLICER
Pin No. Port Name I/O FUNCTION
58 AGCINP I AGC positive signal input.
59 VMIDI I Data slicer comparator positive input test pin.
60 LOENV O Data slicer negative envelope output pin.
61 VIN I Data slicer input.
62 HIENV O Data slicer positive envelope output pin.
63 RSLICE --- Data slicer internal bias current setting resistor pin.
64 RIREF --- Reference current setting resistor pin.
IC BLOCK DIAGRAMS