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== Overview ==
== Overview ==
Each PlayStation motherboard contains a 4-channel BTL-driver IC, driving the spindle motor, sled motor, focus coil and tracking coil. The inputs are driven by the [[CD_DSP|DSP]].
All of these are 4-channel BTL drivers, driving the spindle motor, sled motor, focus coil and tracking coil. The inputs are driven by the [[CD_DSP|DSP]].
 
They naturally run relatively warm (hence the large ground pads for heatsinking), but should never get too hot to touch (->IC or something connected to it is probably defective or shorted). All of these have thermal shutdown as a safety feature.
 
For the Rohm ICs, datasheets are available online.


== ICs used ==
== ICs used ==
=== Rohm ===
=== Rohm ===
* BA6398FP (PU-7, PU-8 (-11))
* BA6398FP (PU-7, PU-8 (-11))
* BA6397FP (PU-8 (-21 and up), PU-16)
* BA6397FP (PU-8 (-21 and up))
* BA6392FP (PU-18)
* BA6392FP / BA6392FP-E2 (PU-18)
* BA5977FP (PU-20, PU-22, PU-23)
* BA5977FP / BA5977FP-E2 (PU-20, PU-22, PU-23)
* BA5947FP (PM-41)
* BA5947FP / BA5947FP-E2 (PM-41)


=== Panasonic ===
=== Panasonic ===
* AN8732SB (PU-22, PU-23, PM-41)
* AN8732SB (PU-22, PU-23, PM-41)
** Using this IC instead of the Rohm part also requires changing some other components
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