22.6.2.3 User Multiplexer Setup

The user multiplexer defines the channel to be connected to which event user. Each user multiplexer is dedicated to one event user. A user multiplexer receives all event channels output and must be configured to select one of these channels, as shown in the next figure. The channel is selected with the Channel bit group in the USER register (USER.CHANNEL). The user multiplexer must always be configured before the channel. A full list of selectable users can be found in the User Multiplexer register (USER) description. Refer to UserList for details.

To configure a user multiplexer, the USER register must be written in a single 16-bit write. It is possible to read out the configuration of a user by first selecting the user by writing to USER.USER using an 8-bit write and then performing a read of the 16-bit USER register.