You do not need the resistors.

Gerald

On Friday, November 28, 2014, Seth <[email protected]> wrote:

> I'm looking at making my own version of the BBB for a custom project. I
> see a note on Revision A6: "Noise issues were observed in other designs
> where the clock oscillator was getting hit due to a suspected issue in
> ground bounce. A zero ohm resistor was added to connect the OSC_GND to the
> system ground." A second resistor was added in the next revision to the
> 32kHz crystal circuit.
>
> Could the GND_OSC nets be tied directly to DGND without zero ohm
> resistors? Was the resistor used just in case the change caused problems
> and could be left unpopulated if so? I see no issues in further revisions
> so I'd assume that these changes fixed the issue, is that right? I'm asking
> because I suspect there might be another reason why resistors were used
> instead of just direct traces (like needing a 'single connection point'
> type of thing). Some clarification would be helpful indeed.
>
> Thanks,
> -Seth
>
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-- 
Gerald

[email protected]
http://beagleboard.org/
http://circuitco.com/support/

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