XMOS XU212-256-FB236 (marked XMOS U11280C20). xCORE Multicore Microcontroller. Standalone real-time RISC processor. Data sheet.

This is the actual interface which manages the whole I-O work and timings.

The xCORE200 Series is a range of 32-bit multicore microcontrollers brings the low latency and timing determinism of the xCORE architecture to mainstream embedded applications. xCORE multicore microcontrollers execute multiple real-time tasks simultaneously and communicate between tasks using a high speed network. (From the data sheet)