6.4.5 Receive (Rx) Channels
There are five identical Rx channels that can be used for five respective receive electrodes. Four receive electrodes are required for Position Tracking and Gesture Recognition. A fifth electrode can be used for touch detection and for approach detection in Wake-up-on-Approach mode. Every Rx input pin is connected to its own dedicated ADC. The Rx input signal is sampled at a sampling rate equal to double the Tx frequency, providing a high and low ADC sample.
The electrodes can be connected in any order to the external electrodes. The channel assignment is then done in a parameterization step in Aurea GUI or alliteratively using I2C commands.
Important: It is recommended to
assign Rx channels 1 to 4 in most application designs, only using RX0 if a fifth Rx
electrode is required.