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CC1021 UART mode problem

Other Parts Discussed in Thread: CC1020, CC1021

Dear Friends:

 

I had seup CC1020 for UART mode transmission.  The receiver detect carrier. But what is very strange is that there is irrelevant data on DCLK which I have used as RX data even when transmitter is off.

 

Regards

  • When the transmitter is off (or if there is a jammer) the CC1020 will try to demodulate noise and you will see this as random data on the RX data out pin.

     

  • Thanks you. If you would excuse me I have furthur questions!

    1- I have an telemetry application for cc1021 in which output power should increase to  5w by external amplifier. Is it basically suitable for sucjh application?

     2- I have made two cc1021 module with exactly the same components from reference design. programing two with the same frequency they are about 100KHz apart and can not be aligned with 3-10pf trimmer as in reference design!?  Is it natural or something is wrong with my boards?