A security coprocessor embedded system-on-chip architecture for smart metering, control and communication in power grid

In this paper a AMBA v2.0 protocol compliable dual-processor architecture is proposed. The architecture is aimed at applications like smart metering, control and communication in power grid. The general-purpose processor (GPP) accomplishes tasks like thread scheduling, resource managing, interrupt response, and all the general calculations. While to ensure communication security and performance of the encryption/decryption operations, a security coprocessor is integrated in the proposed SoC architecture and communicates with the GPP via serial bus protocol. Various peripheral interfaces provide much convenience and possibility for system integration. The whole system has passed register transition level (RTL) function verification and the synthesis results are presented in the end.