Hi Sreenivasa, They are testing MCSPI Loopback DMA example lld on launchpad. To better illustrate the issue, the transfer is looped forever. The SPI0_CLK and SPI0_D0 is measured in the above picture. To reproduce the issue, you may use the mscpi_lookback_dma_lld example, modify it into looping forever like below: Then measure the 47pin on J5 connector on the launchpad. You can see the interval between each cluster of the lock is 250 ns. Regards, Hang.
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