connection between FX3 and USB connector

[Anonymous]

In the AN70707(Page 6) and the pcb file of FX3_DVK(FX3_DVK DEVICE_Brd_Rev2_PD11-0306_PCB_051611-1.brd), the pin of FX3 connect to usb3 connector in this order:

FX---Connector Micro-B
SSRxM     A3---pin 10     SSRx+
SSRxP    A4---pin 9    SSRx-
SSTxP    A5---pin 7    SSTx+
SSTxM    A6---pin 6    SSTx-

But the pin10 of usb3 connector is the SSRX+(USB 3.0 Specification, Page 103), A3 is SSRXM (CYUSB3014 datasheet Page31, 33).
pin9 is SSRX-, A4 is SSRXP.

Is it right to connect in this order?

[Anonymous]

Yes this is correct. USB3 Tx and Rx signals support polarity swapping to give the designer more layout flexibility

   

Hussein

[Anonymous]

Thank you!

[Anonymous]

Should I write some code or set reigster to enable this polarity swaping?

[Anonymous]

No Additonal FW or other changes is needed. The polarity is detected automatically during SS Link training.

   

Hussein

[Anonymous]

Thank you Hussein.