Apparatus for controlling a digital signal processor for radio isolation and associated methods

Abstract

A method of operating a radio-frequency (RF) circuitry and a signal-processing circuitry in a mobile telephone apparatus includes at least partially disabling the signal-processing circuitry while transmitting or receiving signals. In one example, a processor is efficiently disabled by generating and servicing an interrupt of relatively high priority. One advantage of this example is that preexisting, legacy code can be maintained, while still achieving the desired objectives. The processor can be enabled by generating and servicing a second high priority interrupt.

Description

technical field [0001] This patent document relates generally to real-time systems and, more particularly, to systems and methods for controlling real-time systems, such as highly integrated RF systems. Background technique [0002] In different types of circuits, interference can cause problems in the operation of the circuit. These types of problems may be especially pronounced in highly integrated systems, where the operation of one part of the device may interfere with the operation of another part of the device. For example, in a circuit that contains both RF and digital circuits, interference between the RF and digital circuits can cause severe perturbations to the RF circuit, making implementation on an integrated circuit very difficult. [0003] In a typical prior art RF receiver, transmitter, or transceiver, the RF circuitry typically resides in a different circuit partition (e.g., integrated circuit (IC), die, etc.) than the signal processing circuitry (e.g., base...

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Problems solved by technology

[0005] However, utilizing more than one partition for RF and digital circuits has several disadvantages, such as increased component count, size, and overall cost, as well as reduced reliability and increased potential for manufacturing failures

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