Why is the Avalon MM interface optimized away when using the SDI Audio Embed or SDI Audio Extract IP? - Why is the Avalon MM interface optimized away when using the SDI Audio Embed or SDI Audio Extract IP? Description Due to a problem in the Quartus® Prime Pro Edition Software version 25.3 and earlier, the SDI Audio Embed IP and SDI Audio Extract IP might show incorrect behaviour when the generated IP name is audio_embed or audio_extract . In this condition, the affected output ports are left undriven and connected to the default value gnd , you will see messages similar to those shown below: Output port "reg_waitrequest" in instance "u0" of entity "audio_extract" does not have a driver. Connecting to the default value "gnd". Output port "reg_readdatavalid" in instance "u0" of entity "audio_extract" does not have a driver. Connecting to the default value "gnd". Output port "reg_readdata[0..7]" in instance "u0" of entity "audio_extract" does not have a driver. Connecting to the default value "gnd". Output port "reg_waitrequest" in instance "u1" of entity "audio_embed" does not have a driver. Connecting to the default value "gnd". Output port "reg_readdatavalid" in instance "u1" of entity "audio_embed" does not have a driver. Connecting to the default value "gnd". Output port "reg_readdata[0..7]" in instance "u1" of entity "audio_embed" does not have a driver. Connecting to the default value "gnd". Resolution To work around this problem, use a different IP name to avoid a naming that conflicts with the generated HDL module naming used by the Quartus® Prime Pro Software for the SDI Audio Embed or SDI Audio Extract IP. For example: Do not name the SDI Audio Embed IP as audio_embed. Do not name the SDI Audio Extract IP as audio_extract. Regenerate the IP after renaming it to a non-conflicting name. This problem is currently scheduled to be resolved in a future release of the Quartus ® Prime Pro Edition Software. Custom Fields values: Troubleshooting QS-24322 novalue ['Interfaces Audio/Video SDI (Primary)'] ['FPGA Dev Tools Quartus® Prime Software Pro', 'FPGA Dev Tools Quartus® Prime Software Standard'] novalue 25.3 ['Agilex® 3 FPGAs and SoCs', 'Agilex® 5 FPGAs and SoCs', 'Agilex® 7 FPGAs and SoCs', 'Agilex® 9 FPGAs and SoCs', 'Arria® 10 FPGAs and SoCs', 'Cyclone® 10 GX FPGA', 'Cyclone® 10 LP FPGA', 'Cyclone® IV FPGAs', 'Cyclone® V FPGAs and SoCs', 'MAX® 10 FPGAs', 'MAX® V CPLDs', 'MAX® II CPLDs', 'Stratix® 10 FPGAs and SoCs', 'Stratix® IV FPGAs', 'Stratix® V FPGAs']