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TUSB211 / Noise Problem

Other Parts Discussed in Thread: TUSB211

Hi,

My customer is evaluating the TUSB211 and following waveform is observed on the DIM and D2M pins.

The condition is followings;

- TUSB211 is working

- The USB device is not connected

And this waveform(noise) isn't observed while reset(RSTN=Low).

Is there any reason to appear this nose?

Please let me know if there is a lack of information.

Best Regards,

Kuramochi