Each device is programmed with a Unique DIE-ID that is burnt into devices at wafer level; Unique DIE-ID with a 16 bytes customer readable value indicating wafer lot and position of each IC inside a wafer. Combination of Unique DIE-IDs can be read and maintained by customer in a database or in a Hash table. Each system can be identified by the Unique DIE-ID programmed into the devices. Authenticity of the overall system can be established at the powerup/initialization or periodically by checking the Unique DIE-ID.

A Unique DIE-ID is programmed into each device and can be read using I²C reads. To read the Unique DIE-ID, set the IA_SEL (0xB0[5:2]) register to Unique DIE ID Registers (1001), then set register IND_ACC_ADDR (0xB1) address to the Unique ID register being read, and then read the IND_ACC_DATA (0xB2) register to get the Unique DIE-ID. There are 16 Unique ID registers, each of the registers contain 8 bits of the total unique DIE-ID. The table below lists the Unique ID registers addresses.