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Chapter 23
Direct Memory Access Controller (eDMA)
23.1 Introduction
The enhanced direct memory access (eDMA) controller is a second-generation module
capable of performing complex data transfers with minimal intervention from a host
processor. The hardware microarchitecture includes:
• A DMA engine that performs:
• Source- and destination-address calculations
• Data-movement operations
• Local memory containing transfer control descriptors for each of the 16 channels
23.1.1 eDMA system block diagram
Figure 23-1
illustrates the components of the eDMA system, including the eDMA
module ("engine").
Freescale Semiconductor, Inc.
KV4x Reference Manual, Rev. 2, 02/2015
Preliminary
367
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