SDI with Enabled Transmitter Clock Multiplexer will Fail Compilation in the Quartus II Software due to Missing Constraint Parameters - SDI with Enabled Transmitter Clock Multiplexer will Fail Compilation in the Quartus II Software due to Missing Constraint Parameters Description The simulation testbench for SOPC Builder generated variations of the IP Compiler for PCI Express has the test_in[5] bit set to 0 by default. However, the correct default value is 1. The default value of 0 allows the IP Compiler for PCI Express to enter compliance test mode. Resolution Open Quartus II > Tools > Tcl Scripts Select design constraint .tcl file and open Edit the file by adding the following lines: set_instance_assignment -name IO_STANDARD”1.5-V PCML” -to tx_serial_refclk1 set_instance_assignment -name IO_STANDARD”1.5-V PCML” -to tx_serial_refclk Run and compile Solution Status This issue will be fixed in a future version of the SDI MegaCore function. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 11.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']