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AMC7834: Last Bit of SPI Communication

Part Number: AMC7834

Tool/software:

Hi team,

With respect to SPI communication of AMC7834IRTQR, my customer found that if the last bit is 'H', it holds 'H' even after the one frame is sent or read.

Please find the waveform below.

Could you let me know why the it holds 'H'? Is this expected behavior?
So far, my customer hasn't seen any wrong read/write so far.
But it looks unusual, so please let me know why it's happening.

Best regards,
Kazuki Itoh