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TUSB211-Q1: Do not work properly in customer board

Part Number: TUSB211-Q1
Other Parts Discussed in Thread: TUSB211, TUSB213, TUSB212

Dear Masters,

My customer is using TUSB211-Q1 in their infotainment projects to boost the eye diagram of OTG interface. But they found that there is no difference in eye diagram before and after the add TUSB211-Q1. But after the HS packet is send, the CD and ENA_HS pins of TUSB211 are high, which means the TUSB211 has detected the USB device. Below is the power sequence from customer side (Yellow is VDD, Purple is RSTN), from the picture, the power sequence seems not right due to its non-monic, not sure whether it will be a problem.

Another question is that, for TUSB211 and TUSB212/TUSB213, does DP1/DP2 direction will be a problem? If the customer connect DP1 to USB connector and DP2 to Transceiver, should it be a problem? And from the performance TUSB212 will be better than TUSB211, is TUSB211 still recommended to customer?

 

Thank you and looking forward to your feedback.

Eric