tscircuit/boosters

boostxl-rs232/README.md

# BOOSTXL-RS232 serial-interface BoosterPack

Native tscircuit reconstruction of Texas Instruments' BOOSTXL-RS232 dual-channel RS-232 BoosterPack. The design follows TI user guide SLLU250 and its schematic, with a TRS3122E transceiver, DB9 connector, signal-status LEDs, selectable 1.8 V or 3.3 V logic supply, and configurable LaunchPad GPIO routing.

The schematic is divided into three functional sheets:

- **RS-232 Transceiver and Power** — DB9 interface, TRS3122E, charge pump, logic-voltage regulator, supply selection, and support components.
- **Status LEDs and Test Header** — power indicator, RX/TX/RTS/CTS activity indicators, and the accessible RS-232 signal header.
- **Interface and Signal Routing** — BoosterPack headers, GPIO-selection banks, and FORCEON/FORCEOFF/INVALID assignment header.

The PCB preserves the BoosterPack outline, mounting holes, component placement, LaunchPad headers, test and configuration headers, and two-layer construction. RX, TX, RTS, and CTS can be routed through the on-board selection headers, while FORCEON, FORCEOFF, and INVALID remain accessible for transceiver control and monitoring.

This directory follows the source-only layout used by the other boards in this repository: the circuit entrypoint, flat TypeScript component imports, documentation, and canonical snapshots are tracked. Generated manufacturing files, reference archives, caches, dependencies, and downloaded CAD models are not stored here.

## Checks

Run from the repository root:

```sh
bun install
bun run typecheck
bun run build
bunx tsci check shorts boostxl-rs232/index.circuit.tsx --mode gerber --layer all
bunx tsci snapshot boostxl-rs232/index.circuit.tsx --3d --disable-parts-engine
```

## Source authority and release status

- Connectivity, component values, part identities, and designators follow TI's official BOOSTXL-RS232 schematic and BOM.
- Board dimensions, mounting holes, placement, connector orientation, and the two-layer stack follow the reference board documentation and photographs.
- The design is suitable only for a small, current-limited first-article prototype order until connector fit, supply selection, RS-232 signaling, status indicators, and LaunchPad GPIO routing are verified on hardware.
- Passing automated checks proves internal consistency and absence of detected copper shorts; it does not replace fabrication review or bench validation.

Official product page: <https://www.ti.com/tool/BOOSTXL-RS232>

Official user guide: <https://www.ti.com/lit/ug/sllu250/sllu250.pdf>