TMS320DM8127 Datasheet, PDF (20/365 Pages) Texas Instruments – DaVinci Video Processors

TMS320DM8127
SPRS712C – JUNE 2012 – REVISED MARCH 2014
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All C674x accesses through its MDMA port will be directed through the system MMU module where they
are remapped to physical system addresses. This protects the ARM Cortex-A8 memory regions from
accidental corruption by C674x code and allows for direct allocation of buffers in user space without the
need for translation between ARM and DSP applications.
In addition, accesses by the EDMA TC0 and TC1 may optionally be routed through the system MMU. This
allows EDMA Channels 0 and 1 to be used by the DSP to perform transfers using only the known virtual
addresses of the associated buffers. The MMU_CFG register in the Control Module is used to
enable/disable use of the system MMU by the EDMA TCs.
For more details on the system MMU features, see the system MMU section of the Chip Level Resources
chapter in the TMS320DM814x DaVinci Digital Media Processors Technical Reference Manual (Literature
Number: SPRUGZ8).
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