Casio CTK-711EX Service Manual page 15

Pin No. Terminal
80 P72
81 P73
82 P74
83 P75
84 P76
85 DA1
86 AVSS
87 PB0
88 CS3
89 CS2
90 CS1
91 CS0
92 VSS
93 TEND
94 PA1
95 PA2
96 PA3
97 PA4
98 PA5
99 PA6
100 PA7
In/Out
In AC adaptor detection terminal.
In Modulation signal input.
In Pedal signal input.
— Not used.
In Key input signal from buttons.
Out LCD contrast control voltage output.
In Ground terminal (0 V).
Out Reset signal for DSP, Key controller.
— Not used.
— Not used.
Out Chip select signal for Key controller.
Out Chip select signal for DSP.
In Ground terminal (0 V).
— Not used.
— Not used.
Out Key input signal for DEMO button.
Out Clock signal for shift register of KC signal.
Out Clear signal for shift register of LED.
Out Control signal for KC signal and LED.
Out Clock signal for shift register of LED.
Out APO (Auto Power Off) signal.
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Function