CXD8514Q
About this component
The GPU takes drawing commands from the CPU and renders them into a 1 MB framebuffer, which also holds textures and colour palettes. Early boards pair the CXD8514Q with dual-ported VRAM; later boards use a CXD8561-series GPU with cheaper SGRAM, so GPUs are not interchangeable between those board families. There is no public datasheet; donor parts must come from the same board generation. Part variants: CXD8514Q (paired with dual-ported VRAM) on early boards; CXD8561Q / CXD8561BQ / CXD8561CQ (paired with SGRAM) on later boards. TechPowerUp places the SGRAM change at SCPH-500x; psdevwiki notes SGRAM already on some PU-8 sub-revisions.
Handles 2D/3D rasterisation and video output.
Pinout & readings
No pinout or reference readings yet — these show what each pin does and what a healthy part should measure.