Casio CTK-450 User Manual download pdf (Page 7)

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Pin No. Terminal In/Out Function

1 LEDY0 Out Not used.

2 LVDD1 In +5V source

3 LGND2 In Ground (0V) source

4 ~ 9 LEDX0 ~ LEDX5 Out Not used.

10 LEDX6 Out APO(Auto Power Off) signal output ON: "H" OFF: "L"

11 LEDX7 Out Not used.

12 LVDD2 In +5V source

13 ~ 27 Not used.

28 GND2 In Ground (0V) source

29 COSI In 43.45MHz clock pulse input

30 COSO Out 43.45MHz clock pulse output

31 VDD In +5V source

32 GND2 In Ground (0V) source

33 ~ 35 TEST1 ~ TEST3 Not used. Connected to ground.

36 MI In Not used. Connected to +5V.

37 -RESET In Reset signal input

38 AVDD In Ground (0V) source for internal DAC

39 OUT Out Sound waveform output

40 AGND In Ground (0V) source for internal DAC

41 ~ 48 KI0 ~ KI7 In Input terminals for keys and switches

49 ~ 63 KO0 ~ KO14 Out Key and switch scan signal output

64 ~ 72 Not used.

73 LGND1 In Ground (0V) source

74 ~ 80 Not used.

CPU (MSM6567-15)

Containing sound data ROM and DAC (Digital to Analog Convertor), the CPU provides sound waveform in

accordance with the pressed key and the selected tone.

The following table shows pin function of the LSI.

1 2 3 4 5 6 7 8 9 10 11 12 ... 18 19

Jeremiah Tetteh 19 Dec 2024 | 19:29:10

How to transpose on the keyboard

Jeremiah Tetteh 19 Dec 2024 | 19:32:10

How to transpose on the keyboard

Casio CTK-450 User Manual Page 7