Fpga Design of an Efficient and Low-cost Smart Phone Interrupt Controller

−− In this work we have designed and implemented an efficient platform-level interrupt controller for a PXA270 microprocessor-based smart phone. Although current hardware development boards include this type of controllers, for specific applications most of them are costly and include too many interrupt sources that represent a waste for a particular design. For this reason we designed our own interrupt controller which is capable of detecting interrupt sources coming from different devices that request microprocessor service. The developed interrupt controller is efficient and low-cost due to the small number of register and logic gates required for its implementation, as well as for the small number of levels to be traversed in the circuit ́s critical execution path. Keywords−− Interrupt controller, Codesign, FPGA, low-cost, effective, PXA270, smart phone.