> ## Documentation Index
> Fetch the complete documentation index at: https://docs.prescaler.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Device descriptions and CMSIS packs

> Use exact device documentation as evidence.

Use exact device documentation as evidence.

## Before you start

A matching device description, local document or supported pack source.

## Workflow

Resolve the configured part, inspect the source/version of its register map and load an explicit SVD when needed. Keep reference manuals and board documents associated with the correct part/revision.

## Interpret the result

Catalog matches are not physical detection. Packs can contain device-family descriptions; verify the match before using it to reason about a specific part.

For an unexplained result, preserve the source/configuration and observation together. Use [Diagnose a failure](/workflows/diagnose) to turn it into a reproducible investigation. Check [support boundaries](/reference/limitations) before assuming a vendor-specific operation is implemented.