Sharp CD-XP120 Service Manual page 37

IC401 VHiMN6627482W: CD Signal Control (MN6627482WA) (2/2)
Pin No. Terminal Name
47 DSLF
48 PLLF
49 VCOF
50 AVDD2
51 AVSS2
52* EFM, CK384
53 PCK, DSLB
54 VCOF2
55* SUBC
56* SBCK
57 VSS
58 X1
59 X2
60 VDD
61* BYTCK, TRVSTP
62* GIO1, /CLDCK
63* GIO2, FCLK
64* IPFLAG
65* FLAG
66* CLVS
67* CRC
68* DEMPH
69* RESY, FLAG6
70 IOSEL
71 /TEST
72 AVDD1
73 OUTL
74 AVSS1
75 OUTR
76 RSEL, GIO3
77 CSEL
78 PSEL
79 MSEL
80 SSEL
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Input/Output
Input/Output DSL loop filter terminal.
Input/Output PLL loop filter terminal.
Input/Output VCO loop filter terminal.
Input Analog circuit power supply. (DSL, PLL and DA output sections for AD)
Input Analog circuit GND. (DSL, PLL and DA output sections for AD)
Output · IOSEL=H: EFM signal output.
· IOSEL=L: X-tal system 16.9344 MHz clock output.
Signal processing system: 384fs output. (VCO clock for jitter-free operation)
(X-tal system or signal processing system can be selected by the command.)
Output PLL extraction clock output or DSL balance output. fPCK-4.3218 MHz
Input/Output Loop filter terminal for digital servo 33.8688 MHz creation VCO.
X-tal 16.9344 MHz: external circuit is needed.
Output Subcode serial output. CD-TEXT mode 1: TEXT data output.
Input Subcode serial output clock input. CD-TEXT mode 1: TEXT data read clock input
Input Oscillation circuit GND.
Input Oscillation circuit input terminal. f=16.9344 MHz, 33.8688 MHz
Output Oscillation circuit output terminal. f=16.9344 MHz, 33.8688 MHz
Input Oscillation circuit power supply.
Output IOSEL=H: byte clock signal output.
IOSEL=L: traverse STOP signal output. H: STOP Mode
Output Default: general purpose I/O port.
Command execution: terminal for subcode frame clock signal output. (fCLDCK=7.35 kHz)
Output Default: general purpose I/O port.
Command execution: crystal frame clock signal output. (fFCLK=7.35 kHz)
Output Interpolation flag signal output. H: Interpolation
Output Flag signal output.
Output Output for spindle servo phase synchronization signal. H: CLV, L: Rough servo
Output Default: output for subcode CRC check results. H: OK, L: NG
Output Demphasis detection signal output. H: ON
Output IOSEL= H: resync signal RESY output for frame synchronization.
H: Synchronization, L: Synchronization lost
IOSEL=L: RAM address reset signal for error correct deinterleave.
FLAG 6 output L: Address reset
Input Mode switch terminal.
Input Test terminal. Normal: H
Input Analog circuit power supply. (Audio output section (for both Lch and Rch))
Output Lch audio output.
Input Analog circuit GND. (Audio output section (for both Lch and Rch))
Output Rch audio output.
Input Default: RF signal polarity specification terminal.
Brightness H: RESEL=H
Command execution: general purpose I/O port.
RF signal polarity can be specified by command.
CD-TEXT mode 1 or 2: TEXT data read enabling signal (DQSY) output
Input Oscillation frequency specification terminal.
H: Oscillation frequency=33.8688 MHz L: Oscillation frequency=16.9344 MHz
Input IOSEL=H: test terminal. (Normal: L)
IOSEL=L: SRDATA input.
Input IOEL=H: SMCK terminal output, frequency switch terminal.
H: SMCK=8.4672 MHz
IOSEL=L: LRCK input
H: Lch data, L: Rch data
SMCK=4.2336 MHz fixed
Input IOSEL=H: switch terminal for SUBQ terminal output mode.
H: Q code buffer mode
IOSEL=L: BCLK input
Q code buffer mode fixed
Function
Brightness L: RESEL=L
L: SMCK=4.2336 MHz
L: CLDCK synchronization mode
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CD-XP120