Video Port Interface (VPIF) Performance and EDMA/EMDA3

Scott Kerstein

Expert 1395 points

Other Parts Discussed in Thread: AM1806, AM1808

Hello,

Can either the EDMA (AM1806) or EDMA3 (DM6467) transfer high-speed video from the Video Port Interface to memory?
Does the video port grab the imager frames in the background via DMA such that it happens in parallel with the processor?
Is the VPIF module the same design in the AM1808 and DM6467?
In terms of the video port capabilities, is there a difference in performance between these processor families?

Thanks, in advance.

0 Manjunath Hadli56783 over 13 years ago

Can either the EDMA (AM1806) or EDMA3 (DM6467) transfer high-speed video from the Video Port Interface to memory?

No. The VPIF has a dedicated DMA.
Does the video port grab the imager frames in the background via DMA such that it happens in parallel with the processor?

That is correct.
Is the VPIF module the same design in the AM1808 and DM6467?

Yes.
In terms of the video port capabilities, is there a difference in performance between these processor families?

VPIF performence is specified by the max resolution it supports based on the pixel clock freq.

DM6467 spec'd at 99/108MHz

The above supports upto 1080p30 ( non 150Mhz part)
DM6467T spec'd at 150MHz

The above supports upto 1080p60 ( upto 150Mhz clok input)
AM1806/8 does not show performance

The above supports upto 1080p30 ( upto 75Mhz clok input)

Hope that helps.

-Manju

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