CD decoder

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Overview[edit | edit source]

Part of the CD-electronics portion of the PlayStation. Handles error correction, data buffering and ADPCM decoding.

Dedicated versions require 256 KBit / 32 KB of external S-RAM.

Revisions[edit | edit source]

Dedicated CD-decoder[edit | edit source]

  • CXD1199BQ (PU-7)
  • CXD1815Q (PU-8, PU-16, PU-18)

DSP + CD-decoder + CD-decoder's RAM[edit | edit source]

  • CXD1817R (PU-20)

DSP + CD-decoder + CD-decoder's RAM + SPU + audio-DAC[edit | edit source]

  • CXD2938Q (PU-22, PU-23, PM-41 up to PM-41-61)

DSP + CD-decoder + CD-decoder's RAM + SPU + SPU's RAM + audio-DAC[edit | edit source]

  • CXD2941R (PM-41-71, PM-41-82)
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