Sony CDX-M800 Service Manual - Page 36

CDX-M800 4-15. IC BLOCK DIAGRAMS IC1 µPD63711GC-8EU (SERVO Board) AGCO RFI C3T ASY EFM AVDD 7E DAC3 7D DAC2 7C DAC1 7F DAC0 MD SD TD FD AGND ATEST TEST1 TEST0 DGND TSTB TSCK TSI TSO PACK DVDD AGCI 76 RFO 77 EQ2 78 EQ1 79 RF- 80 AGND 81 A 82 C 83 B 84 D 85 F 86 E 87 AVDD 88 REFOUT 89 FE- 90 FEO 91 TE- 92 TEO 93 TE2 94 TEC 95 AGND 96 PD 97 LD 98 PN 99 AVDD 100 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 A/D CONVERTER OUTPUT PROCESSOR EFM COMPARATOR EFM D/A AUTO GAIN CONTROLLER FD/TD/SD/MD CONTROLLER FEOFS TEOFS RF AMP BLOCK SVDRAM ADDER MULTIPLIER SVCRAM SVROM ROM DECODER EFM CLV PROCESSOR SWITCH DEFECT FOK A3T DEFECT COMPARATOR RFENV MIRENV MIRR FEO TEO COMPARATOR TRACKING REGISTER FOCUS REGISTER MICROCOMPUTER INTERFACE MICROCOMPUTER INTERFACE MEMORY PROCESSOR 16K SRAM CD-TEXT DECODER SUB-CODE PROCESSOR EFM DEMODULATOR TIMING GENERATOR DIGITAL PLL D/A INTERFACE CIRCUIT DE-EMPHASIS CIRCUIT DIGITAL AUDIO INTERFACE OCTUPLED OVERSAMPLING DIGITAL FILTER NOISE SHAVER NOISE SHAVER OUTPUT BUFFER OUTPUT BUFFER SCF OSC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 ERROR CORRECTION PROCESSOR 50 C2D3 49 C2D2 48 C2D1 47 C1D2 46 C1D1 45 DGND 44 PLCK 43 MIRR/WFCK 42 RFCK 41 LOCK 40 DVDD 39 TSOI 38 C16M 37 DGND 36 TX 35 HOLD/WDCK 34 LRCK 33 LRCKIN 32 SCKO 31 SCKIN 30 DOUT 29 DIN 28 FLAG 27 EMPH 26 DVDD IC2 BA5810FP-E2 (SERVO Board) FWD 1 28 BIAS REV 2 LOADING PRE FWD REV LDCONT 3 PS 4 IN1 5 X3 POWER SAVE 7.5k - IN2 6 PREVCC 7 POWVCC 8 PREVCC (PRE.LOADING) POWVCC12 (CH1.CH2) 7.5k - 16k + + 16k VOL- 9 VOL+ 10 VO2- 11 10k VO2+ 12 10k 10k VO1- 13 VO1+ 14 10k + + + + 10k - - 10k 10k - - 10k LEVEL SHIFT LEVEL SHIFT + - 27 OPIN4+ 26 OPIN4- 25 OPOUT4 24 OPIN3+ - 23 OPIN3- + - 7.5k 16k 7.5k - - - - + + 22 OPOUT3 - CH1-4 MUTE 21 MUTE 16k POWVCC34 (CH3,CH4) 20 POWVCC 19 GND 10k LEVEL SHIFT 10k 10k LEVEL SHIFT 10k + + + + 10k 18 VO3- 17 VO3+ 10k 10k 16 VO4- 15 VO4+ 10k DGND RFOK RST A0 STB SCK SO SI XTALEN DVDD DAVDD ROUT DAGND REGC DAGND LOUT DAVDD R+ R- L- L+ XVDD XTAL XTAL XGND MRO MPTH TCON OSCO OSCI VSSD VDDD DAVN SDA SCL IC502 SAA6588T (MAIN Board (1/2)) LVIN CIN SCOUT VREF MPX VSSA VDDA AFIN MAD PSWN 20 19 18 17 16 15 14 13 12 11 MULTI PATH DETECTOR 57kHz 8th ORDER BAND-PASS FILTER POWER SUPPLY & RESET PAUSE DETECTOR CLOCKED COMPARATOR SIGNAL QUALITY DECODER 4 CLOCK 54 RDS/RDBS DEMODULATOR RDS/RDBS DECODER INTERFACE REGISTER DATA TEST OSCILLATOR CONTROL & CLOCK CLOCK DATA IIC BUS SLAVE TRANSCEIVER 12 3 45 67 8 9 10 IC301 BA8270F (MAIN Board (2/2)) IC307 BA6288FS (MAIN Board (2/2)) BUSON 1 RST 2 BATT 3 CLK 4 VREF 5 DATA 6 I/O GND 7 BUS ON SWITCH RESET SWITCH BATTERY SWITCH 14 VCC 13 RST 12 BUSON 11 CLK-IN 10 B/U-C 9 DATA IN 8 DATA OUT GND 1 NC 2 OUT1 3 M BATT 4 VCC 5 CLOSE 6 NC 7 NC 8 DRIVER POWER SAVE 16 RNF DRIVER 15 NC 14 OUT2 13 NC 12 VREF 11 OPEN 10 NC TSD 9 NC 36 36 CONTROL LOGIC ERROUT ERRIN GND SWITCH VDD IC800 LM2577SX-ADJ (MAIN Board (2/2)) CURRENT LIMIT, THERMAL LIMIT,AND UNDERVOLTAGE SHUTDOWN LOGIC DRIVER STAGE 52kHz OSCILLATION CORRECTIVE RAMP VOLTAGE COMPARATOR SOFT START ∑ AMP CURRENT SENSE VOLTAGE ERROR AMP 1 1.25V REF. CURRENT SENSE REGISTOR 2.5V REGULATOR 2 3 4 5