Casio MA-100 - Block Diagram; Circuit Description

BLOCK DIAGRAM
CPU
MSM6387-22
LSI101
Amplifier
AN8053N
IC101
Speaker
Oscillator
Q102, X101
VDD
Keyboard
Buttons
Filter
Q101
KO0 ~ KO8
KI0 ~
KI7
AVDD
CIRCUIT DESCRIPTION
Key Matrix
KO0 ~ KO9
MSM6387-13
KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7
KO0 0 1 C2 C#2 D2 D#2 E2 F2
KO1 2 3 F#2 G2 G#2 A2 A#2 B2
KO2 4 5 C3 C#3 D3 D#3 E3 F3
KO3 6 7 F#3 G3 G#3 A3 A#3 B3
KO4 8 9 C4 C#4 D4 D#4 E4 F4
KO5 Tone Rhythm F#4 G4 G#4 A4 A#4 B4
KO6
Tempo
Up
Tempo
Down
C5 C#5 D5 D#5 E5 F5
KO7
Start/
Stop
Fill-In F#5 G5 G#5 A5 A#5 B5
KO8 Demo C6
KO9 Normal Fingered
CASIO
Chord
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