TDA4M USB3 clock

Hi

We plan to use USB3 on TDA4M SerDes port. The external clock for REFCLK_P/N is necessary or not? or it only use for PCIe?

CMU of SERDES has SerDes_ICLK, CMN_REFCLK_INT and CMN_REFCLK1_INT input, can we select WKUP_HFOSC0_CLK or HFOSC1_CLK for USB3 ?

Thanks a lot

B.R

Y.L