Texas Instruments Corporation

Texas Instruments Incorporated Deutschland, Gmbh

Bernd Hannes Schneider

Atul Ramakant Lele

Ryan Alexander Smith

Swapnil Anilkumar Tapadia

Paul John Patchen

An electronic circuit includes an oscillator circuit, a first divider circuit, a synchronization control circuit, and a peripheral circuit. The oscillator circuit is configured to generate a base frequency clock. The first divider circuit is configured to divide the base frequency clock by a first selectable divisor to generate a divided clock. The synchronization control circuit is configured to generate a synchronization pulse that controls a change of the first selectable divisor in the first divider circuit from a first value to a second value. A pulse width of the synchronization pulse is based on the first value of the first selectable divisor. The peripheral circuit is coupled to the first divider circuit and the synchronization control circuit. The peripheral circuit includes a second divider circuit. The second divider circuit divides the divided clock by a second selectable divisor, and change the second selectable divisor responsive to the synchronization pulse.

Clock synchronization pulse width scaling

An apparatus includes: a voltage regulator that outputs a voltage responsive to an enable signal; a power managed domain coupled to the voltage regulator and including a clock generator configured to output a clock signal from the clock generator; and an always on domain. The always on domain receives the clock signal. The always on domain includes a finite state machine coupled to receive the clock signal and receiving a shutdown request signal. The finite state machine is configured to output a signal to control power to the power managed domain and to disable the clock generator, responsive to the shutdown request signal. The finite state machine receives an asynchronous wake signal, and circuitry in the always on domain is coupled to enable power to the power managed domain and to the clock generator, responsive to the asynchronous wake input signal.

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Freising, Germany

Bernd Hannes Schneider