f393e96d69
- Set USB_MODE default to 1 (FT2232H) in radar_system_top.v; 200T build overrides to USB_MODE=0 via build_200t.tcl generic property - Rewrite FT601 write FSM: 4-state architecture with 3-word packed data, pending-flag gating, and frame sync counter - Add FT2232H read FSM rd_cmd_complete flag, stream field zeroing, and range_data_ready 1-cycle pipeline delay in both USB modules - Implement clock-loss watchdog: ft_heartbeat toggle + 16-bit timeout counter drives ft_clk_lost, feeding ft_effective_reset_n via 2-stage ASYNC_REG synchronizer chain - Fix sample_counter reset literal width (11'd0 -> 12'd0) - Add FT2232H I/O timing constraints to 50T XDC; fix dac_clk comments - Document vestigial ft601_txe_n/rxf_n ports (needed for 200T XDC) - Tie off AGC ports on TE0713 dev wrapper - Rewrite tb_usb_data_interface.v for new 4-state FSM (89 checks) - Add USB_MODE=1 regression runs; remove dead CHECK 5/6 loop - Update diag_log.h USB interface comment