Why can't I implement more than one transceiver PHY instance in a transceiver block with Stratix IV GX/T or Arria II GX Transceiver Toolkit designs? - Why can't I implement more than one transceiver PHY instance in a transceiver block with Stratix IV GX/T or Arria II GX Transceiver Toolkit designs? Description The Stratix® IV GX/T and Arria® II GX Transceiver Toolkits use a non-standard transceiver PHY which instantiates a Reconfiguration Controller as one of its sub-components. Instantiation of two transceiver PHYs in a single transceiver block violates the device fitting rule that only one reconfiguration controller can be connected to a transceiver block and will result in a Quartus® II fitting error. You can refer to the Stratix IV GX Handbook for further details on transceiver fitting rules. Resolution To implement more than one transceiver channel in a transceiver block, you can increase the number of channels in the transceiver PHY. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Arria® II GX FPGA', 'Arria® II GZ FPGA', 'Stratix® IV GT FPGA', 'Stratix® IV GX FPGA'] ['novalue'] ['novalue'] ['novalue']