PPIB connects tasks and events of peripherals in two different PPI systems in different power-domains.
A PPI system contains a number of peripherals that can communicate with each other by using tasks and events. This functionality is enabled by the DPPI peripheral. In a PPI system, the peripherals and DPPI are instantiated in the same APB bus.
The following figure shows a PPI system including a PPIB:
PPIB uses tasks and events like a standard peripheral, and connects to local DPPI channels via PPIBus. For more information on PPIBus module, see DPPI.
PPIB has a number of channels. Each PPIB channel connects to a single DPPI channel.