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US 9,543,919 B2Granted
Dual mode power amplifier control interface with a multi-mode general purpose input/output interface
AssigneeSkyworks Solutions, Inc.
InventorDavid Steven Ripley
Life of this patent
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Abstract
In accordance with some embodiments, the present disclosure relates to a dual mode control interface that can be used to provide both a radio frequency front end (RFFE) serial interface and a two-mode general purpose input/output (GPIO) interface within a single digital control interface die. In certain embodiments, the dual mode control interface, or digital control interface, can communicate with a power amplifier. Further, the dual mode control interface can be used to set the mode of the power amplifier.
Claims20
A method comprising:
- receiving a control signal at a digital control interface of a power amplifier module;
- in response to the control signal corresponding to a first logic value, configuring the digital control interface as a serial interface by at least:
- providing a clock signal from a clock input to a serial interface core of the digital control interface, providing a data signal from a data input to the serial interface core, and selecting, at a combinational logic block, a first enable signal to output to an enable level shifter, a first mode signal to output to a first mode level shifter, and a second mode signal to output to a second mode level shifter;
- and
- in response to the control signal corresponding to a second logic value, configuring the digital control interface as a general purpose input/output (GPIO) interface by at least:
- providing a first input signal and a second input signal to the combinational logic block, and selecting, at the combinational logic block, a second enable signal to output to the enable level shifter, a third mode signal to output to the first mode level shifter, and a fourth mode signal to output to the second mode level shifter.
3 more elements
A digital control interface comprising:
- a serial interface device configured to provide a serial interface when active, the serial interface device activated in response to a control signal corresponding to a first logic value;
- and
- a general purpose input/output (GPIO) interface device configured to provide a GPIO interface in response to the control signal corresponding to a second logic value, the serial interface device deactivated in response to the control signal corresponding to a second logic value.
A method comprising:
- receiving a control signal at a digital control interface of a power amplifier module;
- in response to the control signal corresponding to a first logic value, configuring the digital control interface as a serial interface by at least:
- providing a clock signal from a clock input to a serial interface device of the digital control interface, providing a data signal from a data input to the serial interface device, and selecting, at a combinational logic block, a first enable signal to output to an enable level shifter;
- and
- in response to the control signal corresponding to a second logic value, configuring the digital control interface as a general purpose input/output (GPIO) interface by at least:
- providing a first input signal and a second input signal to the combinational logic block, and selecting, at the combinational logic block, a second enable signal to output to the enable level shifter.
3 more elements
Dependencies are inferred from the claim text.