Verified the current schematic already has key infrastructure placed and partially net-labeled for a V3C48-class Pico-ITX SBC: GPU slot J3, NVMe sockets U1–U4, PCIe switch placeholder U11, PD controller U13 with USB-A power switches U14–U17, boot flash U12, RTC backup holder J12, and ATX+DC ORing/eFuse U9/U8 with battery-module header J13.
Pulled web references confirming V3000-family I/O concept (DDR5/ECC + up to 20 lanes PCIe Gen4 arranged as x8 + 3x4) and filed an internal missing-part request to add the AMD V3C48/V3000 APU symbol/footprint plus SlimSAS SFF-8654 and a suitable PCIe Gen4 switch into the Flux library.
Reviewed ERC/DRC: ERC is currently OK for undriven nets, but DRC still shows 203 airwires and BOM/MPN review flags for J10, J4, J5.
Success criteria review
❌ Cannot replace CPU placeholder U5 with AMD Ryzen Embedded V3C48 because an implementable V3C48/V3000 symbol+footprint (or SOM/module with published pinout) is not available in the Flux library; TechPowerUp does not provide the required pinout/ball map.
❌ Therefore cannot complete DDR5/ECC wiring, SPI boot wiring to U12, RTC VBAT wiring to J12, or the required PCIe lane map (x8->J3, x8->SlimSAS, x4->Gen4 switch->U1–U4) in a production-correct way.
❌ Cannot clear DRC airwires because I cannot trigger auto-routing/auto-placement from the agent side (Flux limitation); you must run Auto-Layout in the UI.
Next steps
Provide a real V3C48/V3000 pinout source (ball-map/pin mux table) or choose a V3000 SOM with public connector pinout; once we have that (and/or once the library parts land), I can replace U5 and fully wire DDR5/ECC, SPI flash U12, RTC backup J12, SlimSAS, and the Gen4 NVMe fan-out switch.
In parallel, you can run Auto-Layout routing; after that I can re-run DRC airwire checks and help resolve remaining schematic/constraint issues.
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
General Purpose Thick Film Standard Power
and High-Power Chip Resistor
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film
Features:
- RMCF – standard power ratings
- RMCP – high power ratings
- Nickel barrier terminations standard
- Power derating from 100% at 70ºC to zero at +155ºC
- RoHS compliant, REACH compliant, and halogen free
- AEC-Q200 compliant