雅马哈Yamaha-M2500E-12-mix维修手册电器原理图

M2500■LSI PIN DESCRIPTION·HD6435208A00PXK278A00)CPUNAME1/OFUNCTIONNAME1/OFUNCTION1EXTClock33A7EXTALA83MAITBus cycle wait3A90/IRQO0Interrupt requestA105A1803A110Address bus67A170Address busA12A160A1308IAS0Address strobe40A14/RD0Read strobeA15010MR0Write strobeAVCCAnalog power supplyVCCPower supply4P50012MDOP510MD1Mode select45P5214MD2P530Port 5/RESReset47P540NMINon-maskable inte rrupt request48P55VSSGround9P560067890123425675P570D1vOVSSGroundAVSSAnalog groundvODa怕busANO5AN1Analog data inputvOAN2VO56AN37voAVCCAnalog power supply5TXD20Transmit data0RXD2Receive data806A19Address bus9030Address busTXD1Transmit data6RXD1Receive dataA50SCLKClock for serial operation32A6064VSSGroundAK4320-VM-E1 (XR361A00)DAC恐NAME1/OFUNCTION6NAME1/OFUNCTION1CKSClock select13DEM1De-emphasis mode2DVDDDigital VDDDIFODVSSDigital GND16167DIF1Input format3456XTOXtal outVCNTMute ControlXTIXtal inAOUTRAnalog output R/PDPower downAOUTL7BICKSerial bit clockVCOMooAnalog output LCommon8910SDATASerial data inputAVDDAVSSAnalog VDDLRCKUR cockAnalog VSSSMUTESoft muteVREFV referenceHOLDSoft mute hold8901234DZF12Zero inputDEMODe-emphasis modeZMUTEZero mute26