Internal Error: Sub-system: HSSI, File: /quartus/periph/hssi/hssi_error_message.cpp, Line: 1559 PLL not found for channel implied by HSSI_TX_CHANNEL_CLUSTER0 - Internal Error: Sub-system: HSSI, File: /quartus/periph/hssi/hssi_error_message.cpp, Line: 1559 PLL not found for channel implied by HSSI_TX_CHANNEL_CLUSTER0 Description You might encounter the following internal error when running only the "I/O Assignment Analysis" on an Arria® V GX FPGA Custom or Native PHY xN bonded design in the Quartus II software version 13.0. Internal Error: Sub-system: HSSI, File: /quartus/periph/hssi/hssi_error_message.cpp, Line: 1559 PLL not found for channel implied by HSSI_TX_CHANNEL_CLUSTER0 Resolution To determine if your I/O assignment is correct, run a full Quartus II software compilation. This problem has been fixed in the Quartus II software version 13.0.1 and onwards. Custom Fields values: ['novalue'] Troubleshooting 2205799862 False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 13.0 ['Arria® V GX FPGA', 'Arria® V ST FPGA', 'Arria® V SX FPGA'] ['novalue'] ['novalue'] ['novalue']