A newer version of this document is available. Customers should click here to go to the newest version.
1.1. Using Provided HDL Templates 1.2. Instantiating IP Cores in HDL 1.3. Inferring Multipliers and DSP Functions 1.4. Inferring Memory Functions from HDL Code 1.5. Register and Latch Coding Guidelines 1.6. General Coding Guidelines 1.7. Designing with Low-Level Primitives 1.8. Recommended HDL Coding Styles Revision History
220.127.116.11. Use Synchronous Memory Blocks 18.104.22.168. Avoid Unsupported Reset and Control Conditions 22.214.171.124. Check Read-During-Write Behavior 126.96.36.199. Controlling RAM Inference and Implementation 188.8.131.52. Single-Clock Synchronous RAM with Old Data Read-During-Write Behavior 184.108.40.206. Single-Clock Synchronous RAM with New Data Read-During-Write Behavior 220.127.116.11. Simple Dual-Port, Dual-Clock Synchronous RAM 18.104.22.168. True Dual-Port Synchronous RAM 22.214.171.124. Mixed-Width Dual-Port RAM 126.96.36.199. RAM with Byte-Enable Signals 188.8.131.52. Specifying Initial Memory Contents at Power-Up
184.108.40.206. If Performance is Important, Optimize for Speed 220.127.116.11. Use Separate CRC Blocks Instead of Cascaded Stages 18.104.22.168. Use Separate CRC Blocks Instead of Allowing Blocks to Merge 22.214.171.124. Take Advantage of Latency if Available 126.96.36.199. Save Power by Disabling CRC Blocks When Not in Use 188.8.131.52. Initialize the Device with the Synchronous Load (sload) Signal
3.4.1. Apply Complete System-Centric Timing Constraints for the Timing Analyzer 3.4.2. Force the Identification of Synchronization Registers 3.4.3. Set the Synchronizer Data Toggle Rate 3.4.4. Optimize Metastability During Fitting 3.4.5. Increase the Length of Synchronizers to Protect and Optimize 3.4.6. Increase the Number of Stages Used in Synchronizers 3.4.7. Select a Faster Speed Grade Device
2.5.2. Running Design Assistant During Compilation
When enabled, Design Assistant runs automatically during compilation and reports design rule violations in the Compilation Report.
When you enable or specify parameters for a rule check in compilation mode, those specifications apply by default to running Design Assistant in compilation mode. If you change the rule settings for analysis mode, those settings are independent from the rule settings in compilation mode.
- To run Design Assistant checking during compilation flows, ensure that Enable Design Assistant execution during compilation is on.
- To enable or disable specific design rule checks, turn on or off the checkbox for that rule in the Name column. If the rule is unchecked, Design Assistant does not report violations for the rule.
- In the Parameters field, consider changing default values for rules you enable.
Figure 24. Design Assistant Rule Settings
- To run Design Assistant during compilation, run one or more stages of the Compiler from the Processing menu or Compilation Dashboard.
Figure 25. Example Design Assistant Results in Compilation Reports
- To view the results for each rule, click the rule in the Rules list. A description of the rule and design recommendations for correction appear.
Figure 26. Design Assistant Rule Violation Recommendation
Opening Design Assistant Rule Help
Did you find the information on this page useful?