PXD20RM Datasheet, PDF (689/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Chapter 17
eDMA Channel Mux (DMACHMUX)
17.1 Introduction
17.1.1 Overview
The DMACHMUX controls the routing of multiple DMA peripheral sources (called slots) to 16 eDMA
channels. This is illustrated in Figure 17-1.
Source #1
Source #2
Source #3
DMACHMUX
DMA Channel #0
DMA Channel #1
Source #63
Always #1
Always #8
Trigger #1
Trigger #8
DMA Channel #15
Figure 17-1. DMACHMUX block diagram
17.1.2 Features
The DMA Channel Mux provides these features:
• 41 peripheral slots + 8 always-on slots can be routed to 16 channels
• 16 independently selectable DMA channels routers
— the first 8 channels additionally provide a trigger functionality
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
17-1