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KI0 KI1 KI2 KI3
KO0 Piano2 E. Piano Harpsichord W. Bass
KO1 Piano1 Strings Choir E. Bass
KO2 Vibraphone Pipe organ Reverb
KO3 Song A Song B Record Start/Stop
KO4 Control Tune up Tune down Demo
BUTTON MATRIX
POWER SUPPLY CIRCUIT
The power supply circuit generates four voltages as shown in the following table.
Name Voltage For operation of
VDD +5 V CPU, Reset IC, Working storage RAM, DSP, Key touch LSI, Sound
source ROM, Effect RAM, Gate array
AVDD +5 V DAC
AVCC +12 V Filter, Mixer
AVFF -12 V Filter, Mixer
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