The APB Channel provides the necessary infrastructure to connect as many as 16 AHB Slaves (numbered 0-15) to an APB Bus Master. The APB Channel performs a combinational decode on the incoming APB ...

Typically, the AXI to APB Bridge has its AXI interface connected to a Slave port on an AXI Channel/Interconnect module, and its APB interface connected to the Master port on an APB Channel module.