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TUSB3410: Why into suspend mode?

Part Number: TUSB3410

Hi Sir,

Now use TUSB3410 has problem.
1. The failed PCB can not recognize this device from the PC side. Check that the Crystal has failed.
2. Compared with EVM, there are the following differences
(a). Failed PCB Pin2 (SUSP) measured to 2V (in suspend mode)
       EVM Pin2 is 0V
(b). The failed PCB Crystal is not vibrating and ABA changed with the EVM can be normal work.
3. Why is failed PCB in suspend mode?
4. Please refer t o the diagram. thanks

BR

Kevin