A Multi-mode Configuration Circuit Design for SoPC

SoPC has gradually take place of FPGA in electronic systems. Configuration is basics and manifestation of the flexibility and customization when using SoPC chip. In this paper, a multi-mode configuration circuit embedded in SoPc chip is proposed. Relying on electrical level of external pins set by user, the circuit can switch among different modes and reading configuration bitstream data from different storage medium. CPU-dominated configuration, traditional FPGA configuration and JTAG configuration all consider about the usability and convenience and configuration speed of SoPC chip. The simulation results show that this circuit can configure SoPC chip in various modes according to user's requirements.