fig.block BLOCK DIAGRAM Nov.2002 MC-909 Wave RAM MAIN BOARD X2 16.000MHz 32.768kHz X1 SH-3/7706 128MHz IC1 CPU 64MHz bus R02782778 IC4 SY-PPC IC21 BA Work RAM 64Mbit x 2 IC2,IC6 SDRAM 128MB,256MB x 1 DIMM 67.7376MHz SerialAudio 32bit KeyPad velocity sence 32bit R02900456 64MHz bus 32bit Wave RAM 64Mbit x 2 IC20,IC24 SDRAM R02231767 buffer Program ROM IC19 IC53 Flash ROM Effect RAM 16Mbit DRAM IC23 IC22 ESP4 16Mbit 12bit 12bit 8bit 8bit Mask ROM 48ch_CSP Wave ROM 128Mbit IC28 Wave Bus buffer 3.3V 5V 16bit Flash ROM R01455956 Effect RAM 4Mbit IC37 DRAM 8bit 16bit SRX x1 X3 16.9344MHz Smart Media CARD BOARD buffer 128MB ~ 4MB 3.3V only X4 12.000MHz IC56 IC62 TC9271FS DIT IC75 DACwithDIR A/D2ch,D/A6ch CODEC AK4527B IC60 M66291GP USBC M66273 IC49 LCDC UDA1351TS 320x240dot LCD LCD UNIT 16bit QVGA buffer 3.3V=>5V JACK BOARD CXA-M10A-L MOD1 DC-AC INVERTER Digital Out OPT/COAX Digital In OPT/COAX AUDIO/IN DIRECT/OUT2 DIRECT/OUT1 MIX/OUT PHONES/OUT OUT IN MIDI PANEL BOARD SSC1080 IC20 KeyScan 20MHz H8/3061 ENC SW LED IC2 CPU X1 20.000MHz USB BOARD x16 8bit VR D-Beam 35