Does a10 transceiver native phy supports 10.3125g datarate when using standard PCS？ how to config it( FPGA 10AX027H4F34I3SG)

it says standard PCS supports 1.0 Gbps to 10.81344 Gbps. but it always reports datarate is not supported Error in IP catalog​ when set 10.3125g using the standard PCS.