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CC1120 on DK, XOSC is 0 MHz on "chip information" menu

metin yakup
Prodigy 10 points
Other Parts Discussed in Thread: CC1120

Hello, 

On cc1120DK "chip information" menu I see:

Device: CC1120

Version: 2.1

XOSC:   0 MHz,  (measured value with oscilloscope is 31.88 MHz)

When I doing "SimpleLink Test" from the menu and select "master", "Sent Pkt ID number" is increase but I see nothing on the "Slave".

When I select "Slave" from the menu, CC1120 is being hot. What could be the problem on my board (it is my design)?

Best regards

Metin

  • 0
    TI__Genius 17270 points

    Hello Metin,

    Some confusion arises from your email description. I guess you use SmartRF Studio Device Control Panel  to get the "chip information" . Not sure about XOSC: 0 MHz though. And when you say "it is my design" , do you mean you are doing the test on board designed by you and not using TI EMK?

    When you try SimpleLink Test you are not using TRXEB with EM plugged to it. Please select the correct power source and S1, S2 settings as suggested in thefollowing guides:

    http://www.ti.com/litv/pdf/swru290a

    http://www.ti.com/lit/ug/swru296a/swru296a.pdf

    -M.

  • 0 in reply to Mizanur Chowdhury
    TI__Genius 17270 points

    When you try SimpleLink Test you are  using TRXEB with EM plugged to it. Please select the correct power source and S1, S2 settings as suggested in the following guides:

    http://www.ti.com/litv/pdf/swru290a

    http://www.ti.com/lit/ug/swru296a/swru296a.pdf

  • 0
    TI__Genius 12735 points

    Metin

    From your post I understands it that you are using your own board (pcb) which you connect to the trxEB to run the Simple Link sample code?

    The Chip Information menu on the trxEB uses GPIO3 and GPIO2 to sample the external clock signal from the CC1120. If your boards gpio's are not routed in the same manner as for our EM's you will not be able to get a correct reading. This will also apply for the Slave unit in the Simple Link application. Here the slave node waits for a sync received signal output on GPIO0 to detect that it has received a packet. So I would check that your boards signals are routed the same way as for our EM's.

    However if the chip gets really hot when you put it active mode (TX or RX) it could be because of some poor soldering. You may want to check the soldering on your board as well.