根据某些实施例，本发明系关于一种可用于在一单个数码控制界面晶粒内提供一射频前端(RFFE)串行界面及一三模式通常用途输入/输出(GPIO)界面两者之双模式控制界面。在某些实施例中，该双模式控制界面或数码控制界面可与一功率放大器通信。此外，该双模式控制界面可用于设置该功率放大器之模式。

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 three-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.