NRF9160-SICA-R7 datasheet(89/400 Pages) NORDIC

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Peripherals

PPIBus

SUB[0]

CHIDX

SUB[M-1]

CHIDX

PeripheralCore

Figure 16: DPPI tasks flow

6.2.2 DPPI configuration (DPPIC)

Enabling and disabling of channels globally is handled through the DPPI configuration (DPPIC). Connection

(connect/disconnect) between a channel and a peripheral is handled locally by the PPIBus.

There are two ways of enabling and disabling global channels using the DPPI configuration:

• Enable or disable channels individually using registers CHEN, CHENSET, and CHENCLR.

• Enable or disable channels in channel groups using the groups' tasks ENABLE and DISABLE. It needs to

be defined which channels belong to which channel groups before these tasks are triggered.

Note: ENABLE tasks are prioritized over DISABLE tasks. When a channel belongs to two or more

groups, for example group m and n, and the tasks CHG[m].EN and CHG[n].DIS occur simultaneously

(m and n can be equal or different), the CHG[m].EN task on that channel is prioritized.

The DPPI configuration tasks (for example CHG[0].EN) can be triggered through DPPI like any other task,

which means they can be linked to a DPPI channel through the subscribe registers.

In order to write to CHG[x], the corresponding CHG[x].EN and CHG[x].DIS subscribe registers must be

disabled. Writes to CHG[x] are ignored if any of the two subscribe registers are enabled.

6.2.3 Connection examples

DPPI offers several connection options. Examples are given for how to create one-to-one and many-to-

many connections.

4418_1315 v2.0

NRF9160-SICA-R7 Datasheet(PDF) 89 Page - Nordic Semiconductor