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RTOS/TDC7201: TDC7201

xiuxiu mao
Prodigy 80 points
Part Number: TDC7201
Other Parts Discussed in Thread: TDC1000

Tool/software: TI-RTOS

Hi, how is the pin TRIGG of the TDC7201 chip used? What is its role? Is it a signal that starts measuring as a chip trigger? Can I hang it when I want to use TDC measurements? Which brother can tell me? Thank you

  • 0
    TI__Genius 11015 points
    Xiuxiu,

    We have received your question & will get back with you soon.
  • 0
    TI__Genius 11015 points
    XiuXiu,

    When the start new measurement bit START_MEAS has been set in the TDCx_CONFIG1 register, the TDCx generates a trigger signal on the TRIGGx pin, which is typically used by the corresponding ultrasonic analogfront-end (such as the TDC1000) as start trigger for a measurement (for example, transmit signal for the ultrasonic burst). After receiving a START, the TDCx resets the TRIGGx pin.

    After the last STOP trigger has been received, the TDCx will signal to the MCU through interrupt (INTBx pin) that there are new measurement results waiting in the registers. STARTx, STOPx and TRIGGx pins are disabled (in Multi-Cycle Averaging Mode, the TDCx will start the next cycle automatically by generating a new TRIGG signal).