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DSS DPLL control for EMI reduction?

posted in IGEPv2
Monday, February 25 2013, 10:11 AM
0
Hello,

I need to setup the spread spectrum clocking for DSS controller in order to reduce the EMI.

I have found the information about SSC only in DM3730 technical reference manual pp.2535-2542.

Is there any example/howto or guide on this topic?

Accepted Answer

mcaro
mcaro
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Monday, March 04 2013, 05:48 PM - #permalink
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I have found the information about SSC only in DM3730 technical reference manual pp.2535-2542.
In the latest DM3730 hardware reference manual (Revision R) I suggest you read the pages: 1781 (7.6.2 Display Low-Power Refresh Settings) to 1786 I hope that it help you ... Manel
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  • Accepted Answer

    mcaro
    mcaro
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    Friday, March 01 2013, 11:59 AM - #permalink
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    Hi justason, Do you've the Manual revision? So you can try to reduce the video resolution & dimension, if you do that then the clock frequency is reduced ... Regards Manel
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    Monday, March 04 2013, 07:32 AM - #permalink
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    I do not have a manual revision. I just have a 800*480 LCD display connected to the video port. And with the scope I see HUGE ennission on the clock freq. and its harmonics.
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