Texas Instruments Corporation

Stuart M Horton

Xiaochun Zhao

An apparatus that is adapted to receive signals from an Inter-Integrated Circuit (IC) bus is provided. The apparatus comprises a serial data (SDA) filter, a serial clock (SCL) filter, IC interface logic, and operational circuitry. The SDA filter is adapted to receive an SDA signal from the IC bus and includes a hold terminal and a disable terminal. The hold terminal of the SDA filter issues a disable signal when a transient in the SDA signal is detected. The SCL filter is adapted to receive an SCL signal from the IC bus and includes a hold terminal and a disable terminal. The hold terminal of the SCL filter issues a disable signal when a transient in the SCL signal is detected. Additionally, the hold terminal of the SCL filter is coupled to the disable terminal of the SDA filter, and the hold terminal of the SDA filter is coupled to the disable terminal of the SCL filter. The IC interface logic is coupled to the SDA filter and to the SCL filter, and operational circuitry is coupled the IC interface logic.

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Stuart M Horton