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ASR-2DF Appliance Form Factor Reference Design

INTRODUCTION

ASR-2DF is a form factor reference design for the Afero ASR-2D Secure WiFi/BLE radio architecture (based on the ESP32 WiFi/BLE chipset). The ASR-2DF uses the Espressif ESP32-WROOM-32D module + the Afero Hardware Security Module.

This reference design is meant for customers to use as a starting point for their own designs. It is designed to solve for two different customer situations:

  • As a separate board that is connected via a cable (connectorized) to the product's MCU board utilizing the on-board 3V3 supply, or
  • As a module that is soldered down onto a host-PC board. Further stuffing options can select between an on-board or off-board 3V3 supply.

There are two different stuffing options (BOMs) to cover these two cases.

Use of the pre-certified Espressif ESP32-WROOM-32D module gives the board FCC/IC, TELEC, and other certifications.

For more information, please see the Afero developer site: https://developer.afero.io

Design Information

The ASR-2DF design was built using Altium. The entire Altium project, including scripts that generate the output files, is included.

Manifest (abridged)

  • ASR-2DF.PrjPcb is the toplevel Altium project file.
  • ASR-2DF.SchDoc is the Altium schematic file.
  • ASR-2DF.PcbDoc is the Altium layout file.
  • ASR-2DF.IntLib is an integrated Altium part library for the design.
  • AssyDrawing.PCBDwf and FabDrawing.PCBDwf are drawing templates for the Assembly and Fabrication drawings.
  • documentation.OutJob and gerbers.OutJob are the "scripts" for Altium that you can use to generate all of the needed output files (pdf files, gerbers, pick and place info, et cetera).
  • ASR-2DF.pdf pdf of the schematics, isometric view of the board, fab and assembly drawings; autogenerated.
  • gerbers is the directory where the Gerber output files and ODB++ files are located. These are the files that one would use when you release the board to fab and assembly; autogenerated.
  • gerbers/Bill of Materials-ASR_2DF.csv is the Bill of Materials for the debug version of the board; autogenerated.
  • gerbers/Bill of Materials-ASR_2DF(ASR-2DF - Connectorized Appliance FF).csv is the Bill of Materials for the connectorized version of the board; autogenerated.
  • gerbers/Bill of Materials-ASR_2DF(ASR-2DF - Solder Down Module FF).csv is the Bill of Materials for the modularized version of the board; autogenerated.
  • LICENSE.txt Apache 2.0 license governing the use of this design.
  • NOTICE Copyright information.
  • README.md This file.

Please note that the Afero Secure Radio firmware stack and hardware security modules used in the design are not publicly available. Please contact Afero about licensing these items.

CONTRIBUTORS

Original design by Afero, Inc.

Copyright 2018, 2019 Afero, Inc.

Licensed under the Apache 2.0 license; check LICENSE.txt for more information. All text above must be included in any redistribution.