Casio CTK-450 - Block Diagram

— 3 —
KO0~KO14
KI0~KI7
Keyboard
Switches
Oscillator
Power Supply Circuit
AVDD +5V
VCC +9V
Speaker
Output Jack
Filter
T4/T5
CPU
MSM6567-15
T1/T2/T3
Amplifier
LA4598
Main Volume
Mute Circuit
Reset IC
VDD +5V
M5218APR
T6
S-8053ANO
LEDX6
(APO)
BLOCK DIAGRAM