Freescale Semiconductor,inc.

Celine Hounaïda Abouda

Patrice Besse

Pascal Kamel Abouda

A mixed mode integrated circuit, a method of providing a controllable test clock signal to a sub-circuitry of the mixed-mode integrated circuit and a method of detecting current paths causing violations of electromagnetic compatibility standards in the mixed mode integrated circuit are provided. The mixed mode integrated circuitcomprises in addition to a clock networkan integrated test clock signal generatorto generate test clock signals that are provided via controllable multiplexersto an analog and digital sub-circuitry, respectively, of the mixed-mode integrated circuit. The test clock signals are generated on basis of an input test clock signal having a controllable frequency. The clock network generates clock signals for the sub-circuitries that are used by the sub-circuitries under normal operational conditions. The controllable multiplexers provide either the test clock signal to a specific sub-circuitry or a clock signal received from the clock network.

Mixed mode integrated circuit, method of providing a controllable test clock signal to a sub-circuitry of the mixed-mode integrated circuit and method of detecting current paths causing violations of electromagnetic compatibility standards in the mixed mode integrated circuit

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Saint Lys, France

Celine Hounaïda Abouda