Instantiating 2 JESD204B cores to interface with DACs. Fitter place errors on 8 TX : "Could not find path between source HSSI PMA Aux. block and the Transmitter channel."

Hie,

I am suspecting this Fitter errors caused by incorrect Transmitter (Tx) channel placement in Pin Planner or Assignment Editor. For Arria V, we need to use one of the Tx channels as Tx PLL.

In a transceiver bank, either Ch1 or Ch4 can be selected as Tx PLL. Hence, for your device, there is twelve channels on one side. If all GXB_X0_CH1, GXB_X0_CH4 and GXB_X1_CH7, GXB_X1_CH10 is occupied, then this error could be observed.

Please change your Tx channel placement and check if the error is still observed.

Nathan