Jason 0496291fc5 fix(fpga): F-0.9 option B — FT2232H output_delay 11.667→3.5 ns (TN_167) ...

Previous output_delay of 11.667 ns was a synthetic back-calculation
(period − 5 ns), not a datasheet number. It over-constrained FPGA
launch by ~8 ns vs the actual FT2232H 245-Sync FIFO setup requirement.

Per FTDI TN_167:
- t_su (data to CLKOUT rising):  3.5 ns  (was 11.667 — too tight)
- t_h  (data hold after CLKOUT): 1.0 ns  (was 0.0 — no hold check)
- t_co (CLKOUT to data valid):   10.0 ns (was 9.667 — close)
- t_coh (CLKOUT to data hold):   0.5 ns  (was 0.0 — no hold check)

NB: values must be verified against the exact TN_167 revision in use
before shipping. If the engineer's revision differs, numbers change
but the direction (big relaxation of output_delay_max) is correct.

2026-04-20 21:47:26 +05:45

..

constraints

fix(fpga): F-0.9 option B — FT2232H output_delay 11.667→3.5 ns (TN_167)

2026-04-20 21:47:26 +05:45

formal

fix(rtl,gui,cosim,formal): adapt surrounding files for dual 16-pt FFT (follow-up to PR #33)

2026-04-06 23:15:50 +03:00

scripts

Revert "fix(fpga): F-0.9 option A — BUFIO+BUFR for 50T ft_clkout (SRCC pin)"

2026-04-20 21:47:19 +05:45

tb

test(fpga): F-3.2 add DDC cosim fuzz runner with seed sweep

2026-04-20 15:48:34 +05:45

.gitignore

CIC comb pipeline registers, BUFG sim guard, system TB fix, regression runner

2026-03-19 11:31:46 +02:00

ad9484_interface_400m.v

fix(fpga): F-0.1 wire AD9484 OR overrange pin into diagnostics

2026-04-20 15:48:34 +05:45

adc_clk_mmcm_integration.md

Gap 7 MMCM jitter cleaner + CIC comb CREG pipeline + XDC clock-name fix

2026-03-19 22:59:46 +02:00

adc_clk_mmcm.v

fix: FPGA timing margins (WNS +0.002→+0.080ns) + 11 bug fixes from code review

2026-04-14 00:08:26 +05:45

cdc_modules.v

fix(pre-bringup): second-batch P1/P2/P3 audit findings

2026-04-20 14:28:22 +05:45

cfar_ca.v

Pipeline CFAR noise computation: break critical path for timing closure

2026-03-20 05:24:08 +02:00

chirp_memory_loader_param.v

E2E integration test + RTL fixes: mixer sequencing, USB data-pending flags, receiver toggle wiring (19/19 FPGA)

2026-03-20 01:45:00 +02:00

cic_decimator_4x_enhanced.v

fix(fpga): audit F-2026-04-20-A/B — CIC reset fan-out + BUFIO→BUFG max_delay

2026-04-20 20:20:43 +05:45

dac_interface_single.v

Migrate hardware platform from XC7A50T to XC7A200T-2FBG484I

2026-03-16 22:24:22 +02:00

ddc_400m.v

fix(pre-bringup): second-batch P1/P2/P3 audit findings

2026-04-20 14:28:22 +05:45

ddc_input_interface.v

Fix ddc_input_interface 18->16 bit overflow: add saturation at positive full scale

2026-03-16 18:14:06 +02:00

doppler_processor.v

Fix staggered-PRF Doppler processing with dual 16-point FFTs

2026-03-27 23:05:28 +02:00

edge_detector.v

Fix all 10 CDC bugs from report_cdc audit, add overflow guard in range_bin_decimator

2026-03-17 13:48:47 +02:00

fft_engine.v

FFT engine: merge SHIFT into WRITE (5→4 cycle butterfly, 20% throughput) + barrel-shift twiddle index

2026-03-20 00:20:59 +02:00

fft_twiddle_16.mem

Fix staggered-PRF Doppler processing with dual 16-point FFTs

2026-03-27 23:05:28 +02:00

fft_twiddle_1024.mem

Replace FFT stubs with synthesizable radix-2 DIT engine, fix BRAM inference

2026-03-16 10:25:07 +02:00

fir_lowpass.v

fix(rtl): force FIR adder tree to fabric to free 30 DSPs for FFT butterfly on 50T

2026-04-07 14:45:47 +03:00

fpga_self_test.v

fix: FPGA timing margins (WNS +0.002→+0.080ns) + 11 bug fixes from code review

2026-04-14 00:08:26 +05:45

frequency_matched_filter.v

Convert async→sync reset on DSP/BRAM datapath registers for timing closure

2026-03-17 20:11:13 +02:00

latency_buffer.v

Phase 1 hardware bring-up prep: ILA debug probes, CDC waivers, programming scripts

2026-03-18 01:28:42 +02:00

long_chirp_lut.mem

Fix Bug #11 (platform SPI transmit-only), FPGA B2 (chirp BRAM migration), FPGA B3 (DSP48 pipelining)

2026-03-19 10:31:16 +02:00

long_chirp_seg0_i.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

long_chirp_seg0_q.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

long_chirp_seg1_i.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

long_chirp_seg1_q.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

long_chirp_seg2_i.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

long_chirp_seg2_q.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

long_chirp_seg3_i.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

long_chirp_seg3_q.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

matched_filter_multi_segment.v

Fix matched filter synth errors: overlap_copy_count part-select width, add FSM default

2026-03-19 20:53:29 +02:00

matched_filter_processing_chain.v

Replace FFT stubs with synthesizable radix-2 DIT engine, fix BRAM inference

2026-03-16 10:25:07 +02:00

mti_canceller.v

fix(pre-bringup): resolve P0 + quick-win P1 findings from 2026-04-19 audit

2026-04-20 13:48:36 +05:45

nco_400m_enhanced.v

fix(fpga): registered reset fan-out at 400 MHz; default USB to FT2232H

2026-04-18 20:34:52 +05:45

plfm_chirp_controller.v

E2E integration test + RTL fixes: mixer sequencing, USB data-pending flags, receiver toggle wiring (19/19 FPGA)

2026-03-20 01:45:00 +02:00

radar_mode_controller.v

Gap 2 GUI Settings: runtime chirp timing, stream control gating, status readback (18/18 FPGA, 20/20 MCU)

2026-03-19 23:54:48 +02:00

radar_receiver_final.v

fix(fpga): F-0.1 wire AD9484 OR overrange pin into diagnostics

2026-04-20 15:48:34 +05:45

radar_system_top_50t.v

Revert "fix(fpga): move IBUF+BUFIO+BUFR into 50T wrapper (same scope as pad)"

2026-04-20 21:47:19 +05:45

radar_system_top_te0712_dev.v

Add TE0712/TE0701 split target with dedicated top, XDC, and build flow

2026-03-18 03:57:26 +02:00

radar_system_top_te0713_dev.v

Update heartbeat dev target: LVCMOS33 for Bank 16 FT601 compat, add comments

2026-03-19 16:47:59 +02:00

radar_system_top_te0713_umft601x_dev.v

feat(fpga): make FT2232H default USB interface, rewrite FT601 write FSM, add clock-loss watchdog

2026-04-16 16:18:52 +05:45

radar_system_top.v

Revert "fix(fpga): F-0.9 option A — BUFIO+BUFR for 50T ft_clkout (SRCC pin)"

2026-04-20 21:47:19 +05:45

radar_transmitter.v

Fix CDC reset domain bug (P0), strengthen testbenches with 31 structural assertions

2026-03-17 19:38:09 +02:00

range_bin_decimator.v

Production fixes 1-7: detection bugs, cfar→threshold rename, digital gain control, Doppler mismatch protection, decimator watchdog, bypass_mode dead code removal, range-mode register (21/21 regression PASS)

2026-03-20 04:38:35 +02:00

run_regression.sh

fix(fpga): registered reset fan-out at 400 MHz; default USB to FT2232H

2026-04-18 20:34:52 +05:45

rx_gain_control.v

fix: 9 bugs from code review — RTL sign-ext & snapshot, thread safety, protocol fixes

2026-04-13 23:35:10 +05:45

short_chirp_i.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

short_chirp_q.mem

Regenerate chirp .mem files, add USB testbench, convert radar_system_tb to Verilog-2001

2026-03-16 19:53:40 +02:00

usb_data_interface_ft2232h.v

feat(fpga): make FT2232H default USB interface, rewrite FT601 write FSM, add clock-loss watchdog

2026-04-16 16:18:52 +05:45

usb_data_interface.v

fix: clarify comments — AGC width, dual-USB docstring, BE datasheet ref

2026-04-16 17:51:09 +05:45

xfft_16.v

fix(test,docs): remove dead xfft_32 files, update test infra for dual-16 FFT, add regression guide

2026-04-07 02:51:48 +03:00