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TMDX470MF066HDK SPI Clock

Hi,

I have set FMzPLL = 80 MHz = VCLK

The VCLK2R = 0 so peripheral clock should be VCLK/2 = 40 Mhz. But when I measure the SPI data bit SPI2, the bit waveform as below, the bit rate is only 1 Mhz. Why the transfrom is 80:1? 

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