Asynchronous FIFO with Gray Code — Tools & Flow
Asynchronous FIFO design using Gray-coded pointers, two-flop synchronizers, full/empty generation across clock domains, verification and FPGA implementation.
Typical stack: Verilog/SystemVerilog, ModelSim/Questa, Xilinx/AMD Vivado or Intel Quartus, FPGA boards (Basys3, Nexys, DE10), synthesis timing/area/power reports.
Tools & Hardware
Best Related Project Topics
44+ topics with simulation tools and hardware used.
| # | Project Topic | Tools / Hardware |
|---|---|---|
| Gray Code · Pointer Logic | ||
| 01 | RTLBinary to Gray and Gray to Binary Converters | Verilog · ModelSim |
| 02 | RTLN-bit Gray Pointer Incrementer | Verilog · TB |
| 03 | RTLAsync FIFO Write/Read Pointer Gray Encoding | Verilog · synthesis |
| 04 | RTLStyle of Gray Comparison for Full Detection | RTL · analysis |
| 05 | RTLEmpty Detection Across Domains | Verilog · CDC notes |
| 06 | RTLParameterized Depth Async FIFO (power-of-2) | Verilog · Vivado |
| 07 | RTLAlmost-Full / Almost-Empty with Gray Pointers | Verilog · TB |
| 08 | RTLRegistered Gray Outputs for Timing | timing · reports |
| CDC · Synchronizers | ||
| 09 | RTL2-FF Synchronizer Chain for Gray Pointers | Verilog · CDC |
| 10 | RTLMulti-Bit Gray Bus Sync Best Practices | docs · papers |
| 11 | RTLMetastability MTBF Awareness Notes | analysis |
| 12 | RTLReset Synchronizer for Dual-Clock FIFO | Verilog · TB |
| 13 | RTLFalse Path / Multicycle Constraints Hints | XDC · SDC |
| 14 | RTLSimulation of CDC with Random Delays | ModelSim |
| Verification | ||
| 15 | RTLDual-Clock Testbench with Independent Clocks | ModelSim · SV |
| 16 | RTLConstrained Random Cross-Domain Traffic | Questa · SV |
| 17 | RTLAssertions for No Overwrite / No Under-read | SVA |
| 18 | RTLCoverage of Gray Wrap and Sync Latency | coverage |
| 19 | RTLGolden Behavioral Model vs RTL Async FIFO | Python · cocotb |
| 20 | RTLWaveform Guide for CDC Flag Bugs | GTKWave · ModelSim |
| FPGA Implementation | ||
| 21 | RTLAsync FIFO on Basys3 Dual-Clock Demo | Vivado · Basys3 |
| 22 | RTLNexys A7 Independent Clock Domains Lab | Vivado · Nexys |
| 23 | RTLDE10-Lite Async FIFO with Displays | Quartus · DE10 |
| 24 | RTLBRAM Dual-Port Inference for Async FIFO | utilization |
| 25 | RTLTiming Report Cross-Clock Paths | Vivado timing |
| 26 | RTLResource Study vs Sync FIFO | reports |
| Docs · Capstone | ||
| 27 | RTLLab Manual: Gray Code Async FIFO in 5 Labs | teaching |
| 28 | RTLViva Bank: CDC, Gray, Metastability | Q&A |
| 29 | RTLCapstone: Async FIFO + UART Bridge Domains | FPGA · report |
| 30 | RTLCompare 2-FF vs 3-FF Sync Trade-offs | docs |
| 31 | RTLFormal CDC Checks Overview (optional) | tools |
| 32 | RTLPower Implications of Dual Clock Domains | reports |
| 33 | RTLNon-Power-of-2 Depth Challenges Discussion | analysis |
| 34 | RTLFWFT Mode on Async FIFO | Verilog · TB |
| 35 | RTLSideband Channel Across Domains | RTL |
| 36 | RTLPacket-Aware Async FIFO Markers | Verilog |
| 37 | RTLHierarchical Async FIFO for NoC Lab | SoC notes |
| 38 | RTLSAIF Power for Cross-Domain Ops | SAIF |
| 39 | RTLUpgrade Path 8→16→32 bit Width | stepwise |
| 40 | RTLDepth Sweep and Latency Charts | PPT |
| 41 | RTLInteractive Teaching Demo Dual Clocks | Basys3 |
| 42 | RTLPortfolio: Waveforms + Timing + Report | docs |
| 43 | RTLGray Code Educational Visualizer | sim |
| 44 | RTLASIC vs FPGA Async FIFO Notes | literature |
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