14.6.3.2 Antenna Diversity Application Example

A block diagram for an application using an antenna switch is shown in the figure below.

Figure 14-62. Antenna Diversity – Block Diagram

Generally, when the external RF-Switch (SW1) is to be controlled by antenna diversity algorithm, the antenna diversity enable must be activated by the ANT_EXT_SW_EN bit in the ANT_DIV register (ANT_DIV.ANT_EXT_SW_EN). Then the digital control pins pin 9 (DIG1) and pin 10 (DIG2) are enabled to drive the antenna switch control signals to the differential inputs of the RF Switch (SW1) to switch between ANT0 and ANT1.