davidday47
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Posts posted by davidday47
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Hi JColvin,
Ordered the Digilent twisted pairs per link, will arrive in 3-5 business days. Looking forward to eliminate those glitches.
Thank you guys for the expertise.
Best regards,
David
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Hi attilia,
I have connected all GND leads but still noise, so crosstalk is most like cause.
Do you know if Digilent sells compatible headers and twisted pairs? Or this one from digikey
https://www.digikey.com/en/products/detail/pactech/PC-US2-EXT2-06-K/16396808
Best regards,
David
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Hi JColvin,
You are right, TXAOUT and TXBOUT are not the issue. The chip has 3 GND pins and connect to DD2 3 GND pins.
Here is the bench set up, 800MHzx8. TXAOUT/TXBOUT unconnected, trigger on falling edge nCS. SI signal has a lot of glitches, sometimes TFEMPTY signal also glitched. I think more GND connections to the board will be better but not sure.
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Digital Discovery logic waveforms very glitchy
in Test and Measurement
Posted
Hi JColvin,
I made some twisted pairs as shown on Digilent site and glitches are gone.
Best regards,
David