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This application note describes the integration of QuiddiKey® into OpenTitan, an opensource silicon root of trust. It is intended for engineering teams that plan to integrate QuiddiKey into OpenTitan as a peripheral.  The final result is a modification of the OpenTitan reference design that integrates QuiddiKey as a peripheral connected to the main bus where QuiddiKey can be accessed using its drivers.

AppNote OpenTitan

Contents includes:

  • A step-wise guide to integrating QuiddiKey with OpenTitan.
  • Generating a RISC-V TileLink bus interface for QuiddiKey.
  • Modifying the top block of the EarlGrey design to integrate QuiddiKey.
  • The basic QuiddiKey functions.
  • Porting and using the QuiddiKey driver for this integration.

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