The PXA is a name of one of the processor families based on XScale core. There are four generations of XScale Application Processors: PXA210/PXA25x (for example PXA255), PXA26x, PXA27x (for example PXA270), and PXA3xx (for example PXA320).

Source: Wikipedia.org: PXA

This article uses material from Wikipedia^® and is licensed under the GNU Free Documentation License