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CC1200 serial clock settings

Nomo
Guru 16800 points
Other Parts Discussed in Thread: CC1200

Hello,

I have some questions for CC1200.
CC1200 can output Serial clock (RX mode) and Serial data (RX mode) by setting GPIO to SERIAL_CLK and SERIAL_RX.
These signals are output all of the time.

However, my customer wants to know how CC1200 can output the serial clock and data after the carrier is sensed.
Could you teach me how to output the serial clock and data after CS indication?

Best Regards,

Nomoto

  • 0
    TI__Genius 12735 points
    Hi

    The serial mode can not be gated by CS by default. If you are using synchronous serial mode the serial data and serial clock can be gated bysync word detection. If you have enabled sync word detection (SYNC_CFG1.SYNC_MODE different from 0) there will be no clock or data output unless a sync word has been detected. This sync word detection can also be gated by carrier sense detection, see the MDMCFG1.CARRIER_SENSE_GATE register.

    If you do not use sync word, you need to set up carrier sense on another GPIO and use this as a trigger to read from the data and clock signals.