Patent ID: 6651129
Filing Date: 2003-11-18
Classification: G01R

Abstract:
An apparatus including an integrated circuit with mixed signal circuitry and configuration, control and testing circuitry for said mixed signal circuitry, comprising:a plurality of input terminals for conveying a plurality of input signals including a plurality of configuration control signals; a plurality of interface terminals for conveying a plurality of interface signals including a plurality of analog interface signals; interface circuitry, coupled to said plurality of input terminals, that provides a plurality of configuration data and a plurality of switch control signals in response to said plurality of configuration control signals; memory circuitry, coupled to said interface circuitry, that stores said plurality of configuration data; analog circuitry with a plurality of internal circuit terminals and a plurality of external circuit terminals, coupled to said memory circuitry, that is electrically configurable and communicates a plurality of internal analog signals and a plurality of external analog signals via said plurality of internal circuit terminals and said plurality of external circuit terminals, respectively, in response to a portion of said plurality of configuration data; and switching circuitry, coupled between said plurality of internal circuit terminals, said plurality of external circuit terminals and said plurality of interface terminals, that alternately couples respective ones of said pluralities of internal and external circuit terminals to corresponding ones of said plurality of interface terminals in response to said plurality of switch control signals; wherein respective ones of said pluralities of internal and external analog signals change in response to corresponding changes in respective ones of said portion of said plurality of configuration data.