A tiny and multifunctional ICAP controller for dynamic partial reconfiguration system

As it optimizes the resource utilization of FPGA over time and space, Dynamic Partial Reconfiguration is an important feature of FPGA. The Internal Configuration Access Port (ICAP) controller is an important part of reconfiguration system with which to access the configuration registers of FPGA. By reducing the resources consumed by ICAP controller, more resources will be available for the reconfigurable modules and thus enhance the execution capabilities of reconfiguration system. This paper presents a tiny, multi-functional ICAP controller, and test results show that the ICAP controller consumes less resources compared with other controllers such as AXI_HWICAP, fault-tolerance ICAP, AC_ICAP and ZYCAP. Besides, the ICAP controller has the function of single event upsets (SEU) injection, which can be applied to study the influence of SEUs on reconfigurable system.