0ae7b40ff0
Add TE0712/TE0701 split target with dedicated top, XDC, and build flow
2026-03-18 03:57:26 +02:00
f6877aab64
Phase 1 hardware bring-up prep: ILA debug probes, CDC waivers, programming scripts
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- Rename latency_buffer_2159 -> latency_buffer (module + file + all refs)
- Add CDC waivers for 5 verified false-positive criticals to XDC
- Add ILA debug probe insertion script (4 cores, 126 probe bits, 2 clock domains)
- Add FPGA programming script (7-step flow with DONE pin verification)
- Add ILA capture script (4 scenarios + health check, CSV export)
- Add debug_ila.xdc with MARK_DEBUG fallback attributes
- Full regression clean: 13/13 suites, 266/266 checks, 2048/2048 golden match
2026-03-18 01:28:42 +02:00
fcf3999e39
Fix CDC reset domain bug (P0), strengthen testbenches with 31 structural assertions
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Split cdc_adc_to_processing reset_n into src_reset_n/dst_reset_n so source
and destination clock domains use correctly-synchronized resets. Previously
cdc_chirp_counter's destination-side sync chain (100MHz) was reset by
sys_reset_120m_n (120MHz domain), causing 30 CDC critical warnings.
RTL changes:
- cdc_modules.v: split reset port, source logic uses src_reset_n,
destination sync chains + output logic use dst_reset_n
- radar_system_top.v: cdc_chirp_counter gets proper per-domain resets
- ddc_400m.v: CDC_FIR_i/q use reset_n_400m (src) and reset_n (dst)
- formal/fv_cdc_adc.v: updated wrapper for new port interface
Build 7 fixes (previously untouched):
- radar_transmitter.v: SPI level-shifter assigns, STM32 GPIO CDC sync
- latency_buffer_2159.v: BRAM read registration
- constraints: ft601 IOB -quiet fix
- tb_latency_buffer.v: updated for BRAM changes
Testbench hardening (tb_cdc_modules.v, +31 new assertions):
- A5-A7: split-domain reset tests (staggered deassertion, independent
dst reset while src active — catches the P0 bug class)
- A8: port connectivity (no X/Z on outputs)
- B7: cdc_single_bit port connectivity
- C6: cdc_handshake reset recovery + port connectivity
Full regression: 13/13 test suites pass (257 total assertions).
2026-03-17 19:38:09 +02:00
49eb6169b6
Widen ft601_be to [3:0] for 32-bit FT601 mode, fix NCO XSim TB
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- Expand ft601_be from [1:0] to [3:0] across RTL, top-level, testbenches,
and XDC (uncomment be[2:3] pin assignments B21/A21)
- Fix NCO XSim testbench: correct reset check (0x7FFF not 0), add pipeline
warmup and sample skip for DSP48E1 quadrature test
- All local regression tests pass (39/39 USB, 10/10 integration, all co-sim)
2026-03-16 23:17:38 +02:00
af1af3bb91
Fix XDC for timing closure: add hold waivers, remove stale constraints
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Build 3 on XC7A200T-2FBG484I achieves full timing closure:
- WNS +0.040ns (setup), WHS +0.036ns (hold), 0 failing endpoints
- Add 3 hold false-path waivers for ODDR/BUFIO I/O boundaries
(DAC clk_120m→dac_clk_fwd, FT601 ft601_clk_in→ft601_clk_fwd,
ADC adc_d_p→adc_dco_p) — all artifacts of STA modeling
- Comment out ft601_be[2:3] pins (RTL only drives [1:0])
- Remove CIC multicycle paths (DSP48E1 cells not matchable)
- Add -quiet to IOB properties for tristate/optimized registers
2026-03-16 23:04:16 +02:00
1acedf494c
Migrate hardware platform from XC7A50T to XC7A200T-2FBG484I
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Production FPGA: Artix-7 XC7A200T-2FBG484I (33,650 slices, 740 DSP48E1,
365 BRAM, -2 speed grade). Pin-mapped across 6 banks with proper VCCO
assignment (3.3V/2.5V/1.8V).
RTL timing primitives added for clean timing closure:
- ad9484_interface_400m.v: BUFIO for IDDR capture at 400MHz DDR,
BUFG for fabric logic, reset synchronizer (P1-7)
- dac_interface_single.v: ODDR for dac_clk forwarding + dac_data[7:0]
output registration, eliminates clock-forwarding insertion delay
- usb_data_interface.v: ODDR for ft601_clk_out forwarding, FSM runs
on ft601_clk_in domain with CDC synchronizers
Constraints:
- New production XDC (xc7a200t_fbg484.xdc): 182 pins, generated clocks
for ODDR outputs, BUFIO/DDR input delays, fixed false_path strategy
(from reset source, not to CLR pins), IOB packing on cells not ports
- Preserved upstream XDC as xc7a50t_ftg256.xdc for reference
- Updated cntrt.xdc with DRC fixes (I/O standards, missing constraints)
2026-03-16 22:24:22 +02:00
Jason