ACI

From xboxdevwiki
Revision as of 17:43, 26 June 2017 by JayFoxRox (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

The ACI of the Xbox provides AC97. It's similar to the AMD-768 ACI, but it is accessed through MMIO instead. The datasheet for the AMD-768 can be found at https://web.archive.org/web/20060322081039/http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/24467.pdf .

The AC97 implementation only supports playback of 16-bit PCM stereo samples at 48kHz[FIXME].

Register addresses

  • 0x110 PCM
  • 0x170 SPDIF

Usage in DirectSound

AC97 is only used to receive buffers from the APU. [FIXME]

Related links