Denon AVR-785 Service Manual

Contents

18AVR-1905/785 AVC-1590AD1837 (IC808)AD1837 Terminal FunctionDescriptionPin No. Pin Name Input/Output1,39 DVDD Digital Power Supply. Connect to digital 5V supply.2 CLATCH I Latch Input for Control Data33 CIN I Serial Control Input4 PD/RST I Power-Down/Reset5,10,16,24,30,35 AGND Analog Ground6,12,25,31 NC Not connected7,13,26,32 OUTLx O DACx Left Channel Output8,14,27,33 NC Not connected9,15,28,34 OUTRx O DACx Right Channel Output11,19,29 AVDD Analog Power Supply. Connect to analog 5V supply.17 FILTD Filter Capacitor Connection. Recommend 10μF/100nF.18 FILTR Reference Filter Capacitor Connection. Recommended 10μF/100nF.20 ADCLN I ADC Left Channel Negative Input21 ADCLP I ADC Left Channel Positive Input22 ADCRN I ADC Right Channel Negative Input23 ADCRP I ADC Right Channel Positive Input36 M/S I ADC Master/Slave Select37 DLRCLK I/O DAC LR Clock38 DBCLK I/O DAC Bit Clock40,52 DGND Digital Ground41-44 DSDATAx I DACx Input Data (Left and Right Supply)45 ABCLK I/O ADC Bit Clock46 ALRCLK I/O ADC LR Clock47 MCLK I Master Clock Input48 ADVDD Digital Output Driver Power Supply49 ASDATA O ADC Serial Data Output50 COUT O Output for Control Data51 CCLK I Control Clock Input for Control Data12345678910111213AGNDAVDDOUTR2NCOUTL2NCOUTR1NCOUTL1NCPD/RSTCINCLATCHDVDDNCOUTL3NCOUTR3NCOUTL4NCOUTR4AGNDDLRCLKDBCLKDGND14 15 16 17 18 19 20 21 22 23 24 25 262728293031323334353637383952 51 50 49 48 47 46 45 44 43 42 41 40FILTDFILTRAGNDM/SAGNDAVDDADCLNADCLPADCRNADCRPAGNDAGNDDGNDCCLKCOUTASDATAODVDDMCLKALRCLKABCLKDSDATA4DSDATA3DSDATA2DSDATA1DVDDAVDDTOP VIEWOUTL1CONTROL PORT CLOCKFILTDFILTRADCLPADCLNADCRPADCRNDLRCLKDBCLKDSDATA1DSDATA2DSDATA3DSDATA4MCLKASDATAABCLKALRCLKODVDDDVDD DVDDDGND AGND AGND AGND AGNDDGNDCINCLATCHCCLK COUTDIGITALFILTERPD/RST M/S AVDD AVDDVOLUMEOUTR1OUTL2OUTR2OUTL3OUTR3OUTL4OUTR4AD1837DIGITALFILTERSERIAL DATAI/O PORT VOLUMEVOLUMEVOLUMEVOLUMEVOLUMEVOLUMEVOLUMEDIGITALFILTERDIGITALFILTERDIGITALFILTERDIGITALFILTERVREFΣ-∆ADCΣ-∆ADCΣ-∆DACΣ-∆DACΣ-∆DACΣ-∆DAC