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| CXA1372AQ(1/3) ********* RF SIGNAL PROCESSING SERVO AMP FOR CD PLAYER -TOP VIEW36 35 34 33 32 31 30 29 28 27 26 25 IL08 VCC(+5V) GND 1 2 3 4 5 6 7 8 9 10 11 12 VCC(+5V) 37 38 39 40 41 42 43 44 45 46 47 48 VEE (-5V) VEE(-5V) 24 23 22 21 20 19 18 17 16 15 14 13 (VDD =+5V) PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 I/O I I I I O I I I I O I SIGNAL VC FGD FS3 FLB FEO FESRCH TGU TG2 V CC(+5V) TAO TAPIN No. 13 14 15 16 17 18 19 20 21 22 23 24 I/O I O I I I I I I I I I SIGNAL SL+ SLO SLFSET ISET SSTOP VEE(-5V) DIRC LOCK CLK XLT DATA PIN No. 25 26 27 28 29 30 31 32 33 34 35 36 I/O I O O O O I O O I O SIGNAL XRST C.OUT SENS GND MIRR DFCT ASY EFM FOK CC1 CC2 VCC(+5V) PIN No. 37 38 39 40 41 42 43 44 45 46 47 48 I/O I I I O I I I I I I I SIGNAL CB CP RFI RFO VEE(-5V) TZC TE TDFCT ATSC FZC FE FDFCT w w w .d ee sh ta a u. t4 om c www..com CXA1372AQ(2/3) 38 CP 29 MIRR 39 RFI 40 RFO 33 FOK 35 CC2 34 CC1 31 ASY 36 DVCC 37 CB 32 EFM 30 DFCT 45 ATSC 25 XRST DATA XTL CLK LOCK DIRC 24 23 22 21 20 BPF WINDOW COMPARATOR TTL IIL 17 I SET 16 ISET F SET 27 F SET IIL 26 TTL IIL IIL DATA REGISTER INPUT SHIFT REGISTER ADDRESS DECODER OUTPUT DECODER SENS C.OUT TTL 18 41 DVEE 19 AVEE 42 TZC 43 TE 44 TDFCT 46 FZC DFCT FS1-4 TG1-2 TG1 TM1 TM1-7 PS1-3 15 TM6 SSTOP SL14 SLO TM5 13 SL+ TM4 TM2 28 DGND TRACKING PHASE COMPENSATION TM7 TM3 47 FE 48 FDFCT 8 TGU 1 VC 2 FGD 7 4 FLB 3 FS3 10 AVCC 5 FEO 6 FESRCH FS1 TG2 9 TG2 FOCUS PHASE COMPENSATION 12 TA11 TAO CXA1372AQ(3/3) INPUT ASY CB CC1 CLK CP 39 RFI 38 CP 31 ASY 34 CC1 37 CB 45 ATSC 25 XRST 24 23 22 21 20 18 42 43 44 46 12 8 DATA XTL CLK LOCK DIRC SSTOP TZC TE TDFCT FZC TA TGU 40 RF0 29 MIRR 32 EFM 35 CC2 33 FOK 30 DFCT 27 SENS 26 C.OUT 11 TAO 15 SL13 SL+ 47 48 2 4 3 9 7 6 FE FDFCT FGD FLB FS3 TG2 SRCH FE 14 SLO 5 FEO ;INPUT PIN OF AUTO ASYMMETRY CONTROL. ;CONNECTION PIN OF DEFECT BOTTOM HOLD CAPACITOR. ;OUTPUT PIN OF DEFECT BOTTOM HOLD. ;SERIAL DATA TRANSFER CLOCK INPUT FROM CPU. ;CONNECTING PIN OF MIRR HOLD CONDENSER. NON-INVERTED INPUT PIN OF MIRR COMPARATOR. DATA ;SERIAL DATA INPUT FROM CPU. DIRC ;PIN FOR ONE-TRACK JUMP.CONTAINS A 47k PULL-UP RESISTOR. FDFCT ;CAPACITOR CONNECTING PIN FOR TIME CONSTANT DURING DEFECT FUNCTIONS. FE ;INPUT PIN OF FOCUS ERROR. FE- ;INVERSE INPUT PIN FOR FOCUS AMPLIFIER. FGD ;CONNECT A CAPACITOR BETWEEN THIS PIN AND PIN 3 TO REDUCE HIGH-FREQUENCY GAIN. FLB ;TIME CONSTANT EXTERNAL PIN TO RAISE THE LOW BANDWIDTH OF THE FOCUS SERVO. FS3 ;THE HIGH-FREQUENCY GAIN OF THE FOCUS SERVO IS SWITCHED THROUGH FS3 ON AND OFF. FSET ;PIN TO SET PEAK FREQUENCY OF FOCUS TRACKING PHASE COMPENSATION AND FC OF CLV LPF. FZC ;PIN FOR FOCUS ZERO-CROSS COMPARATOR INPUT. ISET ;CURRENT IS INPUT TO DETERMINE FOCUS SEARCH, TRACK JUMP,AND SLED KICK HEIGHT. LOCK ;AT L SLED RUNAWAY PREVENTION CIRCUIT OPERATES. CONTAINS A 47k PULL-UP RESISTOR. RFI ;INPUT PIN WITH COUPLING CAPACITOR WHERE RF SUMMING AMPLIFIER OUTPUT IS CONNECTED. SL+ ;NON-INVERSE INPUT PIN FOR SLED AMPLIFIER. SL- ;INVERSE INPUT PIN FOR SLED AMPLIFIER. SRCH ;TIME CONSTANT EXTERNAL PIN FOR THE FORMATION OF FOCUS SEARCH WAVEFORMS. SSTOP ;LIMIT SW ON/OFF SIGNAL DETECTION PIN FOR DISC INNER PERIPHERY DETECTION. TA- ;INVERSE INPUT PIN FOR TRACKING AMPLIFIER. TDFCT ;CAPACITOR CONNECTING PIN FOR TIME CONSTANT DURING DEFECTS. ;INPUT PIN OF TRACKING ERROR AMPLIFIER. TE TG2 ;TIME CONSTANT EXTERNAL PIN FOR THE SELECTION OF TRACKING HIGH BAND GAIN. TGU ;TIME CONSTANT EXTERNAL PIN FOR THE SELECTION OF TRACKING HIGH BAND GAIN. TZC ;INPUT PIN OF TRACKING ZERO-CROSS COMPARATOR. VC ;CENTER VOLTAGE INPUT PIN FOR DUAL POWER:GND FOR SINGLE POWER SUPPLY:(V CC +GND)/2 XLT ;LATCH INPUT FROM CPU. XRST ;RESET INPUT PIN,RESET AT "L" 17 ISET 16 FSET OUTPUT CC2 ;INPUT PIN FOR THE CAPACITANCE COUPLED OUTPUT OF DEFECT BOTTOM HOLD. C.OUT ;TRACK NUMBER COUNT SIGNAL OUTPUT. DFCT ;OUTPUT PIN OF DEFECT COMPARATOR. EFM ;OUTPUT PIN OF EFM COMPARATOR. FEO ;FOCUS DRIVE OUTPUT. FOK ;OUTPUT PIN OF FOK COMPARATOR. MIRR ;MIRR COMPARATOR OUTPUT PIN. RFO ;OUTPUT PIN OF RF SUMMING AMPLIFIER AND CHECK POINT OF EYE PATTERN. SENS ;OUTPUTS FZC,AS,TZC AND SSTOP THROUGH COMMAND FROM CPU. SLO ;SLED DRIVE OUTPUT. TAO ;TRACKING DRIVE OUTPUT. ATSC ;WINDOW COMPARATOR INPUT PIN FOR ATSC DETECTION. |
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