Patent ID: 7978095

Claim:
An integrated circuit comprising: an output pad; a first multi-bit register programmable to store data that identifies a customer for whom the integrated circuit has been manufactured; first circuitry coupling the first multi-bit register to the output pad, the first circuitry operable responsive to the integrated circuit being placed into a mode of testing circuit operation to perform parallel-to-serial conversion of the customer identification data stored in the first multi-bit register and drive the serial customer identification data for output through the output pad; and a second multi-bit register programmable to store customer-specified programming data relating to a custom configuration of the integrated circuit, the first circuitry coupling the second multi-bit register to the output pad, the first circuitry operable responsive to the integrated circuit being placed into the mode of testing circuit operation to perform parallel-to-serial conversion of the custom configuration data stored in the second multi-bit register and drive the serial custom configuration data for output through the output pad.