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STR-K890 • IC Block Diagrams – DIGITAL Board – – DIGITAL Board – IC1301 LC89056W-E DVDD VF/P3/C3 F2/P2/C2 F1/P1/C1 F0/P0/C0 CSFLAG ML MC MDI MDO ZERO8 DATA4 ZERO7 NC VCC1 AGND1 VCC2 AGND2 36 35 34 33 32 31 30 29 28 27 26 25 36 35 34 33 32 31 30 29 28 27 26 25 MICROCOMPUTER INTERFACE XSEL 39 40 41 42 43 44 45 24 AUDIO 23 EMPHA PA/PB DETECT SAMPLING FREQUENCY LOCK DETECT 22 21 20 19 18 17 16 15 14 13 CLOCK MODE SELECT DATA DEMODULATOR TIMING SYSTEM CLOCK MANAGER SCKI 38 SCKO 39 XIN XOUT XMCK DVDD DGND XSTATE DATAO LRCK BCK CKOUT SYSTEM CLOCK BCK 40 LRCK 41 TEST 42 DGND 44 ENHANCED MULTILEVEL DELTASIGMA MOJULATOR 4X/8X OVER SAMPLING DIGITAL FILTER WITH FUNCTION CONTROLLER SERIAL INPUT INTERFACE VDD 43 DATA1 45 DATA2 46 DATA3 47 CKSEL0 46 CKSEL1 47 ZEROA 48 DIN2 D.GND DVDD R VIN LPF AVDD AGND DAC OUTPUT AMP AND LPF DAC OUTPUT AMP AND LPF DAC OUTPUT AMP AND LPF 1B 2 7 1Y 2Y 3 6 2B GND 4 5 2A 14 VOUT1 13 VOUT2 1 2 3 4 5 6 7 8 9 10 11 – MAIN Board – Vcc 15 VCOM VOUT4 DINI DAC OUTPUT AMP AND LPF 8 16 VOUT7 VOUT5 SPDIF DINO OUTPUT AMP AND LPF VOUT6 11 12 DAC NC 8 9 10 OUTPUT AMP AND LPF NC 6 7 DAC 19 AGND6 18 VCC5 17 AGND5 ZERO6/GPO6 5 OUTPUT AMP AND LPF ZERO5/GPO5 4 DAC ZERO4/GPO4 2 3 20 VOUT8 ZERO3/GPO3 1 ZERO DETECT OUTPUT AMP AND LPF ZERO2/GPO2 PLL INPUT CIRCUIT DAC ZERO1/GPO1 SYSTEM RESET DISEL XMODE 48 VCC3 AGND3 VCC4 AGND4 1A 1 12 VOUT3 C BIT DETECT CE 37 CLK 38 24 23 22 21 FUNCTION CONTROL INTERFACE RST 37 MODE0 MODE1 DGND DVDD DOSEL0 DOSEL1 IC1503 TC7WH157FU DI DO ERROR BPSYNC LOCK DGND IC1452 PCM1609APT – DISPLAY Board – IC1401 PCM1803DBR IC501, IC601, IC701 uPC2581V-S IC101 TC74ACT08P BIAS CIRCUIT Single-End /Differential Converter PROTECTOR Mode/ Format Control 5 th Order Delta-Sigma Modulator Power Supply 16 OSR Clock and Timing Control PDWN 7 BYPAS 8 FSYNC 9 LRCK 10 15 SCKI 14 13 12 11 VDD DGCD DOUT BCK STR-K890 38 38 5 6 7 8 9 10 11 12 13 14 15 VEE 3 4 DRIVE VCC1 VCC2 2 PRE DRIVE –VOUT2 +VOUT2 1 PRE DRIVE IN2 NF2 COMP2 REG DRIVE GND MODE1 MODE0 FMT1 FMT0 IN1 × 1/64 (× 1/128) Decimation Filter with DC Cut Filter Reference VCC 5 AGND 6 Serial Interface 20 19 18 17 NF1 Single-End /Differential Converter MUTE 1 2 3 4 +VOUT1 –VOUT1 COMP1 VINL VINR VERF1 VERF2 5 th Order Delta-Sigma Modulator 1A 1 14 VCC 1B 2 13 4B 1Y 3 12 4A 2A 4 11 4Y 2B 5 10 3B 2Y 6 9 3A GND 7 8 3Y
