IP design of universal multiple devices SPI interface

The implementation and feature of the standard SPI protocol are analyzed. Based on the Standard SPI protocol, the SPI interface IP for multiple devices is designed by Parameterization method. The communication among multiple devices with the IP is fully complied with the Standard SPI protocol. And it could automatically identify the master/slave devices and accomplish that multi-master devices could use TSM technology to control the same slave device. The SPI interface IP for multiple devices thus could overcome disadvantage during communication among multiple devices, including applying non-standard SPI interface and ingle-master communication protocol.