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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
Song 1: Twinkle Twinkle Little Stars Song 4: Old MacDONALD Had a Farm
Song 2: Pop Goes the Weasel Song 5: Clap Your hands
Song 3: Lullaby (Brahms) Song 6: O Christmas Tree
KI0 KI1 KI2 KI3 KI4 KI5 KI6 KI7
KO0 F3 F#3 G3 G#3 A3 A#3 B3 C4
KO1 C#4 D4 D#4 E4 F4 F#4 G4 G#4
KO2 A4 A#4 B4 C5 C#5 D5 D#5 E5
KO3 F5 F#5 G5 G#5 A5 A#5 B5 C6
KO4 Music box Glass harp Piano Trumpet Flute Violin Woodbass
KO5 Train Car Quiz Cheer Animal
KO6 Stop Siren Horror Carnival Rap
KO7 Dial SW-A Dial SW-B Dial WS-C
KO8 Song 1 Song 2 Song 3 Song 4 Song 5 Song 6
Street
organ
Volume
Down
Volume
Up
Country
western