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EM357-RTR 数据表(PDF) 132 Page - List of Unclassifed Manufacturers |
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EM357-RTR 数据表(HTML) 132 Page - List of Unclassifed Manufacturers |
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132 / 240 page ![]() EM351 / EM357 Figure 9-16. Control Circuit in External Clock Mode 2 9.3.4 Capture/Compare Channels Each capture/compare channel is built around a capture/compare register including a shadow register, an input stage for capture with digital filter, multiplexing and prescaler, and an output stage with comparator and output control. Figure 9-17 gives an overview of the input stage of one capture/compare channel. The input stage samples the corresponding TIy input to generate a filtered signal (TIyF). Then an edge detector with polarity selection generates a signal (TIyFPy) which can be used either as trigger input by the slave mode controller or as the capture command. It is prescaled before the capture register (ICyPS). Figure 9-17. Capture/Compare Channel (Example: Channel 1 Input Stage) The output stage generates an intermediate reference signal, OCyREF, which is only used internally. OCyREF is always active high, but it may be inverted to create the output signal, OCy, that controls a GPIO output. Figure 9-18 shows the basic elements of a capture/compare channel. 9-12 120-035X-000D Preliminary |
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