This answer record contains child answer records covering XDC synthesis attributes and timing constraints supported by Vivado Synthesis. The answer records provide coding examples for these supported XDC synthesis attributes and timing constraints. The answer record also contains information related to known issues and good coding practices.
Note: This answer record is a part of the Xilinx Solution Center for Vivado Synthesis (Xilinx Answer 55265), which is available to address all questions related to Vivado Synthesis. Whether you are starting a new design or troubleshooting a problem, use the Solution Center for Vivado Synthesis to guide you to the right information.
The XDC synthesis attributes and timing constraints answer records are as follows:
(Xilinx Answer 55245) - Design Assistant for Vivado Synthesis - XDC Synthesis Attributes Support - SHREG_EXTRACT, ROM_STYLE, RAM_STYLE, MAX_FANOUT
(Xilinx Answer 55249) - Design Assistant for Vivado Synthesis - XDC Synthesis Attributes Support - MARK_DEBUG, KEEP_HIERARCHY, IOB, USE_DSP48
(Xilinx Answer 55251) - Design for Vivado Synthesis - XDC Synthesis Attributes Support - DONT_TOUCH, BUFFER_TYPE
(Xilinx Answer 55254) - Design Assistant for Vivado Synthesis - XDC Timing Constraints Support
| Answer Number | Answer Title | Version Found | Version Resolved |
|---|---|---|---|
| 55245 | Design Assistant for Vivado Synthesis - XDC Synthesis Attributes Support; SHREG_EXTRACT, ROM_STYLE, RAM_STYLE, MAX_FANOUT | N/A | N/A |
| 55249 | Design Assistant for Vivado Synthesis - XDC Synthesis Attributes Support; MARK_DEBUG, KEEP_HIERARCHY, IOB, USE_DSP48 | N/A | N/A |
| 55251 | Design for Vivado Synthesis - XDC Synthesis Attributes Support; DONT_TOUCH, BUFFER_TYPE | N/A | N/A |
| 55254 | Design Assistant for Vivado Synthesis - XDC Timing Constraints Support | N/A | N/A |