SLAU846A June 2023 – October 2023 MSPM0G1105 , MSPM0G1106 , MSPM0G1107 , MSPM0G1505 , MSPM0G1506 , MSPM0G1507 , MSPM0G3105 , MSPM0G3105-Q1 , MSPM0G3106 , MSPM0G3106-Q1 , MSPM0G3107 , MSPM0G3107-Q1 , MSPM0G3505 , MSPM0G3505-Q1 , MSPM0G3506 , MSPM0G3506-Q1 , MSPM0G3507 , MSPM0G3507-Q1
A generic route is either a point-to-point (1:1) route or a point-to-two (1:2) splitter route in which the peripheral publishing the event uses one of several available generic route channels to publish its event to another entity (or entities, in the case of a splitter route), where an entity can be another peripheral, a generic DMA trigger event, or a generic CPU event, as shown in Figure 7-4.
Peripherals capable of generating a generic event have an additional group (our groups) of GEN_EVENTx event management registers (in addition to the CPU_INT registers used for the CPU interrupt or DMA_TRIGx for DMA, if present). These registers can be used to select the peripheral condition to use for publishing a generic event. When configured, the event will broadcast out to the generic route channel selected by the FPUB_x register. A second peripheral, the DMA, or the CPU can subscribe to this event by configuring its generic subscriber port (FSUB_x) to listen on the same generic route channel to which the publishing peripheral is connected to.
Generic route channels can be configured with one subscriber (1:1 route) or two subscribers (1:2 splitter route), depending on which channel is selected. See the device data sheet for a complete listing of the available generic route channels and their type (1:1 or 1:2). Generic route channels can only be configured with one publishing peripheral at a time. Once a peripheral subscribes to a 1:1 generic route channel, no other peripheral will be able to select that channel to subscribe to, unless the originally connected peripheral is disconnected first. Generic route channels with splitter capability (1:2) enable exactly two peripherals to subscribe to the channel, after which additional attempts to add subscribers will be blocked by hardware until both of the two connected peripherals are disconnected from the splitter channel.
Each peripheral type has unique capabilities in terms of what can generate an event to publish, and what a subscribed event is capable of triggering within the peripheral. Review the chapter of this guide which corresponds to the peripheral of interest to understand what the publisher and subscriber ports on a given peripheral are capable of.