Jason
692b6a3bfa
Implement iterative single-butterfly FFT engine (fft_engine.v) supporting 1024-pt and 32-pt transforms with quarter-wave twiddle ROM, XPM_MEMORY_TDPRAM for guaranteed BRAM mapping in Vivado, and behavioral model for simulation. Add xfft_32.v AXI-Stream wrapper for doppler_processor integration and dual-branch matched_filter_processing_chain.v (behavioral + synthesis paths). Fix placement failure caused by 68K+ registers from dissolved memory arrays: - doppler_processor.v: extract mem writes to sync-only always block for BRAM - xfft_32.v: extract buffer writes to sync-only always block for LUTRAM Post-implementation: 37K regs (29%), 23K LUTs (37%), 10 BRAM (7%), fully routed. All testbenches pass: fft_engine 12/12, xfft_32 10/10, mf_chain 27/27.
260 lines
1.4 KiB
Plaintext
260 lines
1.4 KiB
Plaintext
// Quarter-wave cosine ROM for 1024-point FFT
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// 256 entries, 16-bit signed Q15 ($readmemh format)
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// cos(2*pi*k/1024) for k = 0..255
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7FFF
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7FFE
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