RM46L450
RM46L850
www.ti.com
SPNS184 –SEPTEMBER 2012
4.16 DMA Controller
The DMA controller is used to transfer data between two locations in the memory map in the background
of CPU operations. Typically, the DMA is used to:
•
•
•
Transfer blocks of data between external and internal data memories
Restructure portions of internal data memory
Continually service a peripheral
4.16.1 DMA Features
•
•
•
•
•
•
•
•
•
•
•
•
•
CPU independent data transfer
One 64-bit master port that interfaces to the RM4x Memory System.
FIFO buffer(4 entries deep and each 64bit wide)
Channel control information is stored in RAM protected by parity
16 channels with individual enable
Channel chaining capability
32 peripheral DMA requests
Hardware and Software DMA requests
8, 16, 32 or 64-bit transactions supported
Multiple addressing modes for source/destination (fixed, increment, offset)
Auto-initiation
Power-management mode
Memory Protection with four configurable memory regions
Copyright © 2012, Texas Instruments Incorporated
System Information and Electrical Specifications
Submit Documentation Feedback
Product Folder Links: RM46L450 RM46L850
99
TI [ TEXAS INSTRUMENTS ]
