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TMS320DM8148_1109 Datasheet(PDF) 19 Page - Texas Instruments

Part # TMS320DM8148_1109
Description  TMS320DM814x DaVinci Digital Media Processors
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
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TMS320DM8148_1109 Datasheet(HTML) 19 Page - Texas Instruments

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TMS320DM8148, TMS320DM8147, TMS320DM8146
www.ti.com
SPRS647B
– MARCH 2011 – REVISED SEPTEMBER 2011
2.6
DSP/EDMA Memory Management Unit (MMU)
All C674x accesses through its MDMA port will be directed through the DSP/EDMA 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 DSP/EDMA 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 DSP/EDMA MMU by the EDMA TCs.
For more details on the DSP/EDMA 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).
Copyright
© 2011, Texas Instruments Incorporated
Device Overview
19
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Product Folder Link(s): TMS320DM8148 TMS320DM8147 TMS320DM8146


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