CD DSP
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Overview[edit | edit source]
Signal processor of the CD-electronics portion of the PlayStation.
Has 32K of internal RAM.
CXD2516Q and CXD2510Q additionally require an external servo IC (CXA1782BR, which also includes an RF-amp). CXD2545Q and newer have an internal servo controller and only need an external RF-amp.
For driving the sled motor, spindle motor, tracking coils and focus coils, each PlayStation also has a driver IC for this purpose with its signal inputs connected to the DSP.
Revisions[edit | edit source]
Dedicated DSP[edit | edit source]
- CXD2516Q (PU-7)
- CXD2510Q (PU-8, PU-16)
- CXD2545Q (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)