Jason a5a5e96a57 Fix ddc_input_interface 18->16 bit overflow: add saturation at positive full scale ...

Bug: rounding logic 'adc_i <= ddc_i[17:2] + ddc_i[1]' overflows when
ddc_i[17:2]=0x7FFF and ddc_i[1]=1, causing 0x7FFF+1=0x8000 (sign flip
from max positive to most negative value).

Fix: add explicit saturation — clamp to 0x7FFF when truncated value is
max positive and round bit is set. Negative values cannot overflow since
rounding only moves toward zero.

New testbench: tb_ddc_input_interface.v with 26 tests covering rounding,
truncation, overflow saturation at positive boundary, negative full scale,
valid synchronization, and sync error detection.

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

..

cosim

Fix doppler_processor windowing pipeline bugs + multi-segment buffer_write_ptr bug, add co-sim suites

2026-03-16 18:09:26 +02:00

cic_dc_output.csv

Achieve timing closure: DSP48E1 pipelines, 4-stage NCO, 28-bit CIC, ASYNC_REG

2026-03-16 01:02:07 +02:00

cic_impulse_output.csv

Achieve timing closure: DSP48E1 pipelines, 4-stage NCO, 28-bit CIC, ASYNC_REG

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cic_sine_passband.csv

Achieve timing closure: DSP48E1 pipelines, 4-stage NCO, 28-bit CIC, ASYNC_REG

2026-03-16 01:02:07 +02:00

ddc_120mhz_output.csv

Achieve timing closure: DSP48E1 pipelines, 4-stage NCO, 28-bit CIC, ASYNC_REG

2026-03-16 01:02:07 +02:00

fir_dc_output.csv

Add Phase 0.5 DDC co-simulation suite: bit-accurate Python model, scene generator, and 5/5 scenario validation

2026-03-16 16:01:40 +02:00

fir_impulse_output.csv

Add Phase 0.5 DDC co-simulation suite: bit-accurate Python model, scene generator, and 5/5 scenario validation

2026-03-16 16:01:40 +02:00

fir_sine_passband.csv

Add Phase 0.5 DDC co-simulation suite: bit-accurate Python model, scene generator, and 5/5 scenario validation

2026-03-16 16:01:40 +02:00

gen_mf_golden_ref.py

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_out_i_case1.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

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mf_golden_out_i_case2.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

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mf_golden_out_i_case3.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

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mf_golden_out_i_case4.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_out_q_case1.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

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mf_golden_out_q_case2.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

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mf_golden_out_q_case3.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_out_q_case4.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_ref_i_case1.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_ref_i_case2.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_ref_i_case3.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_ref_i_case4.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_ref_q_case1.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_ref_q_case2.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_ref_q_case3.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_ref_q_case4.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_sig_i_case1.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_sig_i_case2.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_sig_i_case3.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_sig_i_case4.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_sig_q_case1.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_sig_q_case2.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_sig_q_case3.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_sig_q_case4.hex

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_golden_summary.txt

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

mf_pipeline_output.csv

Add 8 Verilog testbenches with full coverage (144/144 pass)

2026-03-15 06:14:11 +02:00

nco_1mhz_output.csv

Achieve timing closure: DSP48E1 pipelines, 4-stage NCO, 28-bit CIC, ASYNC_REG

2026-03-16 01:02:07 +02:00

nco_120mhz_output.csv

Achieve timing closure: DSP48E1 pipelines, 4-stage NCO, 28-bit CIC, ASYNC_REG

2026-03-16 01:02:07 +02:00

nco_freq_switch.csv

Achieve timing closure: DSP48E1 pipelines, 4-stage NCO, 28-bit CIC, ASYNC_REG

2026-03-16 01:02:07 +02:00

nco_quadrature.csv

Achieve timing closure: DSP48E1 pipelines, 4-stage NCO, 28-bit CIC, ASYNC_REG

2026-03-16 01:02:07 +02:00

tb_chirp_contract.v

Add 8 Verilog testbenches with full coverage (144/144 pass)

2026-03-15 06:14:11 +02:00

tb_chirp_controller.v

Add 8 Verilog testbenches with full coverage (144/144 pass)

2026-03-15 06:14:11 +02:00

tb_cic_decimator.v

Add 8 Verilog testbenches with full coverage (144/144 pass)

2026-03-15 06:14:11 +02:00

tb_ddc_400m.v

Add 8 Verilog testbenches with full coverage (144/144 pass)

2026-03-15 06:14:11 +02:00

tb_ddc_cosim.v

Add Phase 0.5 DDC co-simulation suite: bit-accurate Python model, scene generator, and 5/5 scenario validation

2026-03-16 16:01:40 +02:00

tb_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

tb_doppler_cosim.v

Fix doppler_processor windowing pipeline bugs + multi-segment buffer_write_ptr bug, add co-sim suites

2026-03-16 18:09:26 +02:00

tb_edge_detector.v

Add 8 Verilog testbenches with full coverage (144/144 pass)

2026-03-15 06:14:11 +02:00

tb_fft_engine.v

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

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

tb_fir_lowpass.v

Add 8 Verilog testbenches with full coverage (144/144 pass)

2026-03-15 06:14:11 +02:00

tb_freq_matched_filter.v

Add 8 Verilog testbenches with full coverage (144/144 pass)

2026-03-15 06:14:11 +02:00

tb_matched_filter_processing_chain.v

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

tb_mf_chain_synth.v

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

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

tb_mf_cosim.v

Add matched-filter co-simulation: bit-perfect validation of Python model vs synthesis-branch RTL (4/4 scenarios, correlation=1.0)

2026-03-16 16:23:01 +02:00

tb_multiseg_cosim.v

Fix doppler_processor windowing pipeline bugs + multi-segment buffer_write_ptr bug, add co-sim suites

2026-03-16 18:09:26 +02:00

tb_nco_400m.v

Achieve full timing closure on xc7a100tcsg324-1 at 400 MHz (0 violations)

2026-03-16 15:02:35 +02:00

tb_radar_mode_controller.v

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

tb_range_bin_decimator.v

Add 3 missing FPGA modules with enhanced testbenches (168/168 pass)

2026-03-15 13:37:10 +02:00

tb_xfft_32.v

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

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