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CC1200: powerdown

Mike Wu1
Expert 1911 points
Part Number: CC1200

Hi, 

My customer is using CC1200. And they want  to know CC1200 will enter power down with retention or XOFF mode after executing the following code:

        QSPI_SET_SS_HIGH(QSPI0);

        trxSpiCmdStrobe(QSPI0, CC120X_SIDLE);

        trxSpiCmdStrobe(QSPI0, CC120X_SXOFF);

        trxSpiCmdStrobe(QSPI0, CC120X_SPWD);

Please help to provide comments.

Thanks.

  • 0
    TI__Guru**** 317180 points

    SXOFF and SPWD sets the chip in two different states, see figure 2 in the CC1200 UserGuide (https://www.ti.com/lit/pdf/swru346) 

    As I read the manual, 

    trxSpiCmdStrobe(QSPI0, CC120X_SXOFF); will set the chip in XOFF but if CSn goes low when 

    trxSpiCmdStrobe(QSPI0, CC120X_SPWD); is called the chip will exit XOFF state and go into PWD.

    If in doubt, measure the current, since the current consumption is different for the two states.  

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