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TUSB1210EVM: why use 22Ω in the Figure 3 of EVM user's guide?

Part Number: TUSB1210EVM


In the TUSB1210EVM User Guide, Figure 3 is as follows: Input signal (ULPI interface) termination resistor, why use 22Ω?

Can you help me to see if usb.pdfis reasonable and what needs to be modified?

Thanks a lot.

Best Regards

Elsa Duan