Sharp XL-520W Service Manual page 39

IC802 VHiTC9284BF-1:Servo/Signal Control (TC9284BF) (2/2)
Port Name
Pin No.
43 FCSI
44 FKIC
45*,46* FEL2,1
47 FEI
48 TESH
49 TEOF
50 SBAD
51 RFRP
52 VREF
53 RFI
54 GNDA
55 DTSC2
56* MONIT
57 DTSC1
58 VDDA
59 PDCNT
60 PDO
61 TMAX
62 LPFN
63 LPFO
64 VCOF
65 TESTX
66* HS
67 GNDD
68* SPDA
69* COFS
70* WDCK
71* CHCK
72* BCK
73* AOUT
74* EMPH
75 DOUT
76* TEST2
77 VDDX
78,79 XI,XO
80 GNDX
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Input/Output
Output Focus actuator driving signal output terminal in the focus search mode.
COMMAND
FORST
FOSET
Others
Output Focus actuator driving signal output terminal in the focus gain adjusting mide.
COMMAND
FGASR
FGASS
Others
Output Focus again adjusting analog switch output terminals.
Input Focus error signal input terminal.
Input Tracking error signal input sample holding analog switch input terminal.
Output Tracking servo operation ON/OFF analog switch output terminal.
VREF when the tracking servo is OFF.
Input Sub beam adding signal input terminal.
Input RF ripple signal input terminal.
Input Reference voltage input terminal. (+2.1V)
Input RF signal input terminal.
— Analog ground terminal.
Output Data slice control EFM signal passive output terminal.
Output Internal signal (EFMO, PLCK, LOCK and MBOV) output terminal. Slected by command.
Output Data slice control EFM signal nagative output terminal.
— Analog supply voltage terminal. (+5V)
Input PDO output control terminal.
At "L" level, PDO output is made to HiZ by force.
Output Phase error signal output terminal between EFM signal and PLCK.
Output TMAX signal output terminal, HiZ at time of system clock.
Longer than specified period
Shorter than specified period
Specified period
Input LPF amplifier inverting input terminal for PLL.
Output LPF amplifier output terminal for PLL.
Input VCO filter terminal.
Input Test terminal.
Output Double speed monitor output terminal. Double speed operation at "L" level.
— Digital ground terminal.
Output Processor status signal output terminal.
Correction process judging result, memory buffer capacity, etc.
Output Correction system frame periodic signal output terminal. 7.35 kHz.
Output Word clock output terminal. Normally, 88.2kHz.
Output Channel clock output terminal. Normally, 44.1 kHz.
Output Bit clock output terminal. Normally, 1.4112MHz
Output Audio data output terminal.
Output Emphasis ON/OFF indication signal output terminal. Emphasis ON at "H" level.
Output Digital out output terminal.
Input Test terminal. Normally, keep at "H" level or open.
Output Oscillator supply voltage terminal.
In/Output Crystal oscillator connecting teminal.
Output Oscillator grand terminal.
Function
FCSI OUTPUT
H
L
HiZ
FKIC OUTPUT
H
L
HiZ
TMAX OUTPUT
TMAX PERIOD
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XL-520W/CP-520
OPERATION
Lens gets for away from disc
Lens gets near disc
Other than focus search
OPERATION
Lens gets for away from disc
Lens gets near disc
Other than focus adjustment
L
H (2VREF)
HiZ