Dsp Dma - Texas Instruments OMAP5912 Reference Manual

Multimedia processor device overview and architecture

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DSP DMA

Used to control logical channel access. The OMAP_3.1_mode tie-off values

are those values given to the bits in OMAP 3.1 compatible mode, because the

DMA_LCD_CCR, DMA_LCH_CTRL, and DMA_LCD_CSDP registers do not

exist in the compatible mode. These values are tied off/on in hardware. (For

LCH_TYPE, the tie-off value is 0000).

Defines logical channel assignment relationship to associated features

and physical channel.

The only possible configuration is: 0100: LCh-D PCh-D. This bit field must

be configured as above to secure forward compatibility.

Acting in the background of MPU operation, the DSP DMA controller can:

Transfer data among internal memory, external memory, and peripherals

residing on the DSP public peripheral bus

Transfer data between the MPUI and internal memory

Figure 14 shows the ports serviced by the DMA controller within the context

of the DSP subsystem.

Direct Memory Access (DMA) Support

System DMA / DSP DMA

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