JAJSEA1 December 2017 PGA302
PRODUCTION DATA.
I2C is a synchronous serial communication standard that requires the following two pins for communication:
I2C communicates in a master/slave style communication bus where one device, the master, can initiate data transmission. The device always acts as the slave device in I2C communication, where the external device that is communicating to it acts as the master node. The master device is responsible for initiating communication over the SDA line and supplying the clock signal on the SCL line. When the I2C SDA line is pulled low it is considered a logical zero, and when the I2C SDA line is floating high it is considered a logical one. For the I2C interface to have access to memory locations other than test register space, the IF_SEL bit in the Micro/Interface Control Test register (MICRO_IF_SEL_T) has to be set to logic one.