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Answers to Top FAQs
1. Hyperflex® FPGA Architecture Introduction
2. Hyperflex® Architecture RTL Design Guidelines
3. Compiling Hyperflex® Architecture Designs
4. Design Example Walk-Through
5. Retiming Restrictions and Workarounds
6. Optimization Example
7. Hyperflex® Architecture Porting Guidelines
8. Appendices
9. Hyperflex® Architecture High-Performance Design Handbook Archive
10. Hyperflex® Architecture High-Performance Design Handbook Revision History
2.4.2.1. High-Speed Clock Domains
2.4.2.2. Restructuring Loops
2.4.2.3. Control Signal Backpressure
2.4.2.4. Flow Control with FIFO Status Signals
2.4.2.5. Flow Control with Skid Buffers
2.4.2.6. Read-Modify-Write Memory
2.4.2.7. Counters and Accumulators
2.4.2.8. State Machines
2.4.2.9. Memory
2.4.2.10. DSP Blocks
2.4.2.11. General Logic
2.4.2.12. Modulus and Division
2.4.2.13. Resets
2.4.2.14. Hardware Re-use
2.4.2.15. Algorithmic Requirements
2.4.2.16. FIFOs
2.4.2.17. Ternary Adders
5.2.1. Insufficient Registers
5.2.2. Short Path/Long Path
5.2.3. Fast Forward Limit
5.2.4. Loops
5.2.5. One Critical Chain per Clock Domain
5.2.6. Critical Chains in Related Clock Groups
5.2.7. Complex Critical Chains
5.2.8. Extend to locatable node
5.2.9. Domain Boundary Entry and Domain Boundary Exit
5.2.10. Critical Chains with Dual Clock Memories
5.2.11. Critical Chain Bits and Buses
5.2.12. Delay Lines
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2.4.2.1.2. Viewing Clock Networks in the Fitter Report
The Compilation Report provides detailed information about clock network implementation following Fitter placement. View the Global & Other Fast Signals Details report to display the length and depth of the clock path from the source clock pin to the clock tree.
To view clock network implementation in Fitter reports:
- Open a project.
- On the Compilation Dashboard, click Fitter, Place, Route to run the Fitter.
- On the Compilation Dashboard, click the Report icon for the completed stage.
- Click Global & Other Fast Signals Details. The table displays the length of the clock route from source to the clock tree, and the clock region depth.
Figure 65. Clock Network Details in Fitter Report