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hi,
i looked a lot but i couldnt find anything.i want build a circuit for 4 channel phone line caller id.
i have to use SM8223A decoder and atmel microcontroller.
i build a circuit but micro cant receive all data,when all line is ringing micro just catch 3 line's caller id.
im thinking make it with shift register for each line.4 shift register get 4 caller id then micro get them from registers.
but how can i do it? any ideas ?
i looked a lot but i couldnt find anything.i want build a circuit for 4 channel phone line caller id.
i have to use SM8223A decoder and atmel microcontroller.
i build a circuit but micro cant receive all data,when all line is ringing micro just catch 3 line's caller id.
im thinking make it with shift register for each line.4 shift register get 4 caller id then micro get them from registers.
but how can i do it? any ideas ?