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CC8520 can not download

leonard Smith
Prodigy 20 points
Other Parts Discussed in Thread: CC8520

I am a Chinese university student.First please forgive my poor english.I am definitely a Hi-Fi fun.Recently I have a project that contains device of cc8520.I designed the PCB myself.But after me  got them and finish the PCB.I connectted it to the cc debugger. The wireless configuerator just show the cc debugger device while without the device of cc8520.The power pins are all ok(3.3V from cc debugger),I check the pcb again and again.still can not find the issue.The matter I want to konw is:which part of the sch component is necessary if i just need to download the program besides the power part and SPI part? could you ge me some suggestions for my suitation? Sincerly thanks.

  • 0
    TI__Mastermind 21125 points

    Hi Leonard, 

    A schematic of your board will be helpful, so please post this if you can.
    Please make sure the device has a working crystal at the right frequency.

    Best Regards,
    Kjetil 

  • 0 in reply to Kjetil
    Prodigy 20 points

    sorry for verfied late, these days i checked the sch again and again,finally i found that i forget to connect the vcc of the target board,but i found  a phenomenon that the state led still can light even if I just connect the spi lines and gnd to the target board.I read nearly all the other questions and answers in this website.after that I found the answer,thank you so much!