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Question about AD9910 parallel data port

Question asked by JongWon on Jan 30, 2013
Latest reply on Jan 31, 2013 by sitti


I'm using AD9910 with parallel port.

I don't know how to change frequency & Amplitude.

I can change frequency by parallel port.

Following is my code.


//Initializing register by serial.


TxENABLE = High;

F1 = 1;

F0 = 0;

P1 = 0x1A;

P0 = 0xAA;

TxEN = 0;

P1 & P0 is connected directly to parallel port(D0 ~ D15).


By this way, I can set frequency.


But I don't know how to set Amplitude.


Thank you.