RM46L852
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SPNS185 –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 TMS570 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 99
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