25IC1 BA1405F-E2 (MAIN Board)IC701 PCM1717E-S18 17 16 15 14 13 12 11 101 2 3 4 5 6 7 8 9LAMPRAMPMPXBUFFERBUFFER 1/2OSC 38kHzL INBALANCEBALANCENCVCCMPX OUTNCPILOT OUTNCR INAMP BIASNCGNDOSC BIASOSCOSCNCNCIC401 BA4558F876512342CH1CHVCCOUT2–IN2+IN2OUT1–IN1+IN1VEE3456718192017161514891013121121 CLKCONTROLINPUTINTERFACEDIGITALFILTER5LEVE DACLOWPASS FILTERCMOSAMP5LEVEL DACLOWPASS FILTERCMOSAMPMODECONTROLXTIDGNDVDDLRCINDINBCKINZEROD/CRVOUTRAGND AVCCVOUTLD/CLMODERSTBMD/DM0MC/DM1ML/MUTECLKOXTONOISE SHAPER