Patent ID: 9214979
Filing Date: 2015-12-15
Classification: H03F,H03G,H03K,H03L,H04B

Abstract:
1. A power amplifier module comprising: a power amplifier configured to amplify a radio frequency (RF) signal; a power amplifier controller; and a digital control interface configured to provide a set of control signals to the power amplifier controller, the power amplifier controller configured to control the power amplifier based on the set of control signals, the digital control interface including a voltage input/output (VIO) pin, a serial interface module, and a general purpose input/output (GPIO) interface module, the serial interface module including a serial interface core configured to provide a serial interface when active, the serial interface core activated in response to a first voltage signal received by the VIO pin, and the GPIO interface module configured to provide a GPIO interface responsive to a second voltage signal received by the VIO pin, the serial interface core deactivated in response to the second voltage signal.