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    FPGA Timings P2: Clock Domain Crossing(CDC) with Vivado 2024

    Posted By: lucky_aut
    FPGA Timings P2: Clock Domain Crossing(CDC) with Vivado 2024

    FPGA Timings P2: Clock Domain Crossing(CDC) with Vivado 2024
    Published 7/2025
    Duration: 5h 5m | .MP4 1280x720 30 fps(r) | AAC, 44100 Hz, 2ch | 1.81 GB
    Genre: eLearning | Language: English

    Step by Step Guide from Scratch


    What you'll learn
    - Metastability physics and its impact on clock-domain crossings.
    - Distinction between Static Timing Analysis and CDC verification in Vivado 2024.
    - Generation and interpretation of Vivado report_clock_interaction and report_cdc outputs.
    - Design and insertion of two- and three-stage synchronizers with correct ASYNC_REG usage.
    - Decision-tree methods for safe single-bit transfers, pulses, and reset crossings.
    - Techniques for coherent multi-bit transfers using Gray counters and XPM_CDC primitives.
    - Calculation and optimization of Mean Time Between Failure (MTBF) for reliable designs.

    Requirements
    - Fundamentals of Digital Electronics, Verilog, STA.

    Description
    This course teaches FPGA engineers how to recognize, analyze, and close clock-domain crossings in Vivado 2024. It begins by contrasting CDC analysis with conventional static timing analysis and by explaining the physics and practical consequences of metastability. Students learn why static timing checks cover only synchronous domains, how metastability propagates, and how to read Vivado’s clock-interaction reports that flag potential false or true violations. The curriculum then moves to hands-on design work, where participants write and debug RTL that purposefully contains unsafe crossings, observe real metastability through simulations, and systematically repair the design. The class introduces two- and three-stage synchronizers, shows why combinational outputs cannot feed them directly, and explains the correct use of the ASYNC_REG attribute, fanout limits, and delay minimization. Single-bit transfers are handled with a decision-tree method that covers level and pulse crossings as well as asynchronous and synchronous resets. Multi-bit transfers follow, demonstrating why a single-bit synchronizer is inadequate, how to maintain data coherency with Gray counters or Xilinx XPM_CDC_ARRAY_SINGLE primitives, and how to build reliable dual-clock FIFOs using XPM_CDC_GRAY. Throughout the course, students generate and interpret Vivado report_clock_interaction and report_cdc output, apply safe and unsafe terminology, and practice waiver management and sign-off procedures. Practical labs culminate in an automated CDC analysis flow that mates TCL scripts with design checkpoints for repeatable closure. Finally, the class quantifies mean time between failure, shows how to push MTBF beyond product life by adjusting synchronizer depth and clock frequency, and equips engineers to defend their CDC strategy during design reviews. By the end, attendees can identify every crossing in a design, select the proper synchronizer or primitive, verify that all paths are safe, and deliver hardware that meets reliability targets on first silicon or bitstream release.

    Who this course is for:
    - Anyone preparing for Front end RTL Design role.
    More Info

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