Protecting Storage Node and Its Communications With Sink in a Two Tier Sensor Network

Abstract: Enabling embedded systems having only SPI interfaces to connect with I2C peripherals provides design flexibility through interoperability and power flexibility. But SPI interfaces cannot directly connect with I2C peripherals. The best way to deal with this problem is to create an SPI to I2C interface using protocol converter. Protocol Converters are generally used for transforming data and commands from one device or application to another. This work mainly focuses on protocol conversion from SPI to I2C through “read” and “write” commands. Also an effective low power technique such as clock gating insertion, dynamic power gating and use of Multi-threshold standard cells for reducing leakage power are implemented over this design.

Keywords: SPI, I2C, Protocol converter, Low power Techniques.