Dual mode serial/parallel interface and use thereof in improved wireless devices and switching components

摘要

Systems, methods, and devices for communicating with a serial/parallel interface are described herein. In an aspect, a wireless device includes a transceiver configured to output a plurality of transmission paths, and an antenna configured to output a signal corresponding to at least one of the transmission paths. The wireless device further includes a wireless switching component including a radio-frequency switch configured to selectively connect the antenna to one of the transmission paths, a plurality of signal pins, a serial interface including a plurality of serial inputs electrically coupled to at least one pin of the plurality of signal pins, a parallel interface including a plurality of parallel inputs electrically coupled to at least one pin of the plurality of signal pins, a decoder, and a level shifter configured to control the radio-frequency switch, the at least one pin electrically coupled to both a serial input and a parallel input.

主权项

1. A dual interface device comprising a die and a package encasing the die, the package including pins configured to receive data, and the die including:
a plurality of signal pins; a serial interface including a serial input electrically coupled to at least one pin of the plurality of signal pins; a parallel interface including a parallel data input electrically coupled to the at least one pin of the plurality of signal pins while the serial input of serial interface is electrically coupled to the at least one pin of the signal pins, the parallel data input being electrically coupled to a pin of the pins of the package, the parallel interface including a second parallel data input that is not electrically coupled to any of the pins of the package, the parallel interface configured to operate in a high-impedance output mode when the serial interface is enabled; a controller configured to provide a level shifted voltage signal to a radio frequency switch; and a bus electrically connecting both the serial interface and the parallel interface to the controller, at least one of the serial interface or the parallel interface configured to provide data from the at least one pin of the plurality of signal pins to the controller via the bus.