Dma Block Diagram - Texas Instruments Concerto F28M35 Series Technical Reference Manual

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ANALOG SUBSYSTEM

11.2.2 Peripheral Interrupt Event Trigger Sources

The peripheral interrupt event trigger can be independently configured as one twenty-nine different

sources for each of the six DMA channels. Included in these sources are three external interrupt signals

which can be connected to most of the general-purpose input/output (GPIO) pins on the device. This adds

significant flexibility to the event trigger capabilities. A bit field called PERINTSEL in the MODE register of

each channel is used to select that channels interrupt trigger source. An active peripheral interrupt trigger

will be latched into the PERINTFLG bit of the CONTROL register, and if the respective interrupt and DMA

channel is enabled (see the MODE.CHx[PERINTE] and CONTROL.CHx[RUNSTS] bits), it will be serviced

by the DMA channel. Upon receipt of a peripheral interrupt event signal, the DMA will automatically send a

clear signal to the interrupt source so that subsequent interrupt events will occur.

Regardless of the value of the MODE.CHx[PERINTSEL] bit field, software can always force a trigger by

using the CONTROL.CHx[PERINTFRC] bit. Likewise, software can always clear a pending DMA trigger

using the CONTROL.CHx[PERINTCLR] bit.

SPRUH22I – April 2012 – Revised November 2019

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Figure 11-1. DMA Block Diagram

DINTCH (6:1)

MXINTA, MRINTA

ADCINT (4:1)

SOCA (9:1), SOCB(9:1)

C28 Direct Memory Access (DMA) Module

Architecture

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