Teacup Neo

A universal development platform for any Ingenic SoC — T10, T20, T21, T23, T30, T31, T32, T33, T40, T41, and the A1 NVR processor — regardless of package (QFN88 / QFN96 / BGA232 / BGA356 / BGA381).

Two boards:

• a carrier — the universal baseboard: adjustable SoC power, all peripherals, full pin breakout, and an on-board ESP32-S3 management controller so an agent (an LLM, CI, or a human) can drive the target wired or wireless — flash, reset, boot-select, console, and voltage-margin it hands-off;
• a small per-SoC interposer — the SoC + its package fanout + clock + decoupling
  • straps (+ optional local power / boot NOR), presented on a DDR4 card-edge (UDIMM-288 desktop) socket.

Swap the interposer, keep the carrier — the package stops mattering.

The design

Full spec: docs/UNIVERSAL.md. It covers the connector choice, the power architecture (adjustable VCORE/VDDR with digipot voltage control + margining), the verified T10→A1 rail table, clock/flash/boot, the ESP32-S3 BMC and autonomous flash loop, full sensor/camera support (MIPI + DVP across the whole family), full A1 support (dual SATA 3.0 + dual GbE), dedicated camera-SoC peripherals (audio, PWM/IR-cut/IR-LED, JTAG), carrier test points, and the pin-breakout budget.

Building it: docs/BUILD.md is the agent-facing build playbook — the headless KiCad pipeline (footprints → symbols → label-driven schematics → pcbnew netlist apply → FreeRouting → manufacturing), the per-phase verification gates, and the gotchas already proven on the T41 board in old/.

Status: design / specification. No open or deferred design questions remain; the next step is the geography-first pin assignment against a carrier floorplan.

old/ — the T41 precursor

old/ holds the original single-SoC board that proved the approach and the headless-KiCad pipeline (kicad-cli + pcbnew + FreeRouting). It's netlist-verified and ~83% auto-routed — details in .