Cyclone V Gbx Transceivers - can't fit more than 4, should be able to use 6? Error (14566): The Fitter cannot place 5 periphery component(s) due to conflicts with existing constraints (5 Channel PLL(s)).

Hi Matthias, As I understand it, you observe some Fitter error during your compilation with CV XCVR design. As I check the CV part that you are using, there are total of 6 XCVR channels. By default, you should be able to implement maximum of 5 duplex XCVR with one channel reserved for CMU PLL. Would you mind to share a simple test design with Native PHY which could replicate the error observation so that I could further look into it? Thank you.