IPOTTcommunication is the silicon IP verification vehicle for protocols such as I2C and SPI, including a 400KHz 2pin I2C interface and 20MHz 4pin SPI interface.

TheI2C is protected by a software lock protocol and communicates to the REGISTERMAP array

The SPI is also protected by a software lock protocol. There is an extra UNLOCK pin that can bypass the protocol.  Set UNLOCK=1 to bypass. The SPI communicates to the SPIMAP array.