CD DSP

Overview

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 (CXA2550N up to PU-20 or CXA2575N from PU-22 and later).

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

Dedicated DSP

• CXD2516Q (PU-7)
• CXD2510Q (PU-8, PU-16)
• CXD2545Q (PU-18)

DSP + CD-controller + CD-controller's RAM

• CXD1817R (PU-20)

DSP + CD-controller + CD-controller's RAM + SPU + audio-DAC

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

DSP + CD-controller + CD-controller's RAM + SPU + SPU's RAM + audio-DAC

• CXD2941R (PM-41-71, PM-41-82)