Error (175001): Could not place HSSI_PMA_AUX <instance path&gt.sv_tx_pma_ch_inst|tx_pma_ch.tx_pma_buf.tx_pma_aux - Error (175001): Could not place HSSI_PMA_AUX <instance path&gt.sv_tx_pma_ch_inst|tx_pma_ch.tx_pma_buf.tx_pma_aux Description You may encounter this fitter error for Intel® Stratix® V GX or Stratix® V GT devices if you instantiate more than one instance of transceiver Reconfiguration Controller IP in the same half-side of the device and they use different mgmt_clk_clk input sources. The fitting error is due to an incorrect connection to the physical transceiver calibration blocks. There is a single physical Calibration Block in each quadrant of the device, controlled by the transceiver Reconfiguration Controller IP. Resolution Transceiver Reconfiguration Controllers with a Calibration Block must have the same mgmt_clk_clk source. Please refer to the "Calibration Block Boundary" chapter of the Intel® Stratix® V GX handbook. This may be found in the "Transceiver Architecture in Stratix V Devices" volume. Related Articles How can I resolve Quartus II software HSSI_PMA_AUX associated fitter errors when compiling with Stratix V, Arria V, and Cyclone V transceiver devices? Custom Fields values: ['novalue'] Troubleshooting 2205889634 False ['PLL Reconfig IP'] ['FPGA Dev Tools Quartus II Software'] 16.1 11.0.1 ['Stratix® V E FPGA', 'Stratix® V FPGAs', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']