Updates to the Intel® High Definition Audio Specification

ID 660408
Updated 1/25/2018
Version Latest



Recently there have been several changes to the Intel® High Definition Audio specification. These details have been documented in a central whitepaper which is available in PDF form on this page.

Functional Changes

These are high level descriptions of the new features in the Intel® High Definition Audio specification:

  • The advertisement and discovery of new capabilities have been simplified with a capabilities linked-list.
  • The specification now supports multiple-heterogeneous links (the first feature to use the capabilities linked list framework).
  • New support for static switching to lower frequencies. This reduces dissipation on configurations which only require fixed, low bandwidth connections.
  • Added support for a new variant of the high definition audio codec which dispenses with the RST# pin.

For more information, download the attached PDF.

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