CRC-8 / CRC-16 / CRC-32 Online Calculator | EasyFPGA.blog
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ASCII example: 123456789.sv files for Vivado / Icarus simulation.Free calculation and RTL/testbench generation for personal learning on this website. The EasyFPGA tool and generated code are subject to the usage terms. Except as permitted by law, saving, copying, modifying, redistributing, or incorporating the code into a project or product requires prior written permission.
The generated module is a basic CRC datapath: it consumes one full data word every clock after synchronous reset. It has no enable/valid, frame-start, or partial-word handling. Add and verify those controls for your protocol. For RefIn=true, the lowest byte of data_in is processed first; for RefIn=false, the highest byte is first. A single combinational stage is generated; timing closure depends on width, device, and implementation.
Checks all six presets against the reference check values for
"123456789" and compares the calculator with a JavaScript evaluation of the generated XOR equations at 8 bits/clock.
This browser check does not compile or simulate the generated SystemVerilog, or verify timing and protocol integration.
Runs automatically on page load. See the CRC parameter catalogue.
Follow XOR division and the LFSR circuit, then learn how to use the calculator and generated datapath. For integration support, timing optimization, or permission to use generated code in a project, contact EasyFPGA.