Input of ADPLL (74HC297)

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bazook

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Hi,

could somebody tell me what should be an input signal to ADPLL like 74HC297.
In LPLL it was almost sine wave as a telecommunication signal. Now I can receive this form ADC but thats are N length binary words. ADPLL has JK phase detector which needs bit after bit. What should I do with this?
 

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