Design And Implementation Of The Interrupt System Of YHFT-MP Multicore DSP

Interruption handling mechanism plays a very important role for DSP processing in a real-time environment. It is able to improve the efficiency and throughput of DSP. Researching and designing the interruption handling system is very significant for designing and application of DSP. The research job of the thesis mainly includes the following aspects:At first, this paper has an in-depth study in the interrupt based on YHFT-MP DSP. According to the structure of YHFT-MP system, divide interrupt handling system structure into chip level interrupt controller and single core level interrupt handling system. Integrate the interrupt handling system into the Chip architecture, enhanced the stability and the speed of entering into the interrupt service program of real-time processing.Secondly, this paper implements the RTL Verilog code of the chip level interrupt controller. Route interrupt source reasonably, interrupt source can be unicast or broadcast. Design some way of Interrupts mask so that enhance programmable and configurability of the DSP.Then, this paper implement the RTL Verilog code of the core level interrupt controller. Single-core interrupts handling system implements the multilayer interrupt priority, protect the drop interrupts, interrupt nesting mechanism. Design the interrupt processing state machine in the Single-core interrupt handling system. Shorten the response time of the interrupt service, improve the real-time performance of the chip. Design and implements an IPC communication mode based on the Single-core interrupt handling systemIn the end, this paper verify the functional of Interruption handling system based on coverage driven, Functional coverage reach 99%, ensure the interrupt processing system fully functional. At the logical synthesis, the frequency of INTC reaches 660 MHz, the frequency of sigle core interrupt system reaches 1.32 GHz, both of them meet the design goals. Develop the API function of interrupt controller to use interrupt controller easier. The API function can shorten the development period of application software.