Casio ap-21 User Manual

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MAJOR WAVEFORMS
1 Filter output L-ch CF connector pin 2
2 Filter output R-ch CF connector pin 1
Tone : Piano 1
Key : A4
3 Key scan signal KC0 CA connector pin 20
4 Key scan signal KC1 CA connector pin 19
5 Key scan signal KC2 CA connector pin 18
6 Button scan signal L24 UPD65005GF-419 pin 53
7 Button scan signal L25 UPD65005GF-419 pin 54
8 Button scan signal L26 UPD65005GF-419 pin 55
CH1 .2V CH2 .2V
˜˜
A 1ms
CH1
CH2
1
2
CH1 5V CH2 5V
˜
CH3 5V
A 20 µs
CH1
CH2
3
5
4
CH3
CH1 5V CH2 5V
A 2ms
CH1
CH2
6
7
CH2 5V
CH3
8

Casio ap-21 Specifications

General

Brand	Casio
Model	ap-21
Category	Electronic Keyboard
Language	English