noise
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fb19caa95d
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Add GPS + PPS distribution sheet (all rev-A blocks captured)
- New carrier/GPS_PPS.kicad_sch via tools/build_gps.py: J_GPS 5-pin
(PPS + UART2 NMEA + 3V3_AUX + GND) per Pinout_BOM section 6
- PPS chain: GPS_PPS_RAW -> PESD3V3L1BA TVS -> 74LVC1G17 Schmitt
(+3V3_AUX) -> PPS_CLEAN -> 33R series -> SYNC_OUT (CM5 pin 18 + J2.6),
plus J_PPS1 (UWB) / J_PPS2 (scope) 2-pin taps; board is PPS sink only
- NMEA on UART2 (GPIO4/GPIO5) per correction C2; debug console keeps UART0
- Converted SYNC_OUT/GPIO4/GPIO5 local labels on CM5_GPIO to global
(names unchanged) to reach the new sheet; root sheet-symbol needs no pins
- J_GPS pins 1/2 typed output (GPS drives PPS/TX) for driver-aware checks
- Verify: ERC 133->133 zero new; analyzer +73/-0 zero regressions; netlist
confirms all cross-sheet nets; SPICE 24 pass / 2 benign warn / 0 fail
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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2026-07-02 07:22:16 -04:00 |
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