FX3 SuperSpeed communication fails due to FX3 internal noise issues?

[RonaldG]

Hi,

Did anyone got USB communication failures when using FX3 GPIF interface?

See http://www.cypress.com/?app=forum&id=167&rID=74739

Regards,

Ronald

[robertghilduta]

Hi Ronald,

This issue can be avoided by properly decoupling all of the separate FX3
power domains. If you look at page 9 of the schematics (
http://nuand.com/bladerf.pdf ), you will see how each power domain has an a
ferite bead and decoupling caps. I verified the BER of the GPIF and found
it to be 0 bits after hours of testing on several different units.
Are you seeing any anomalies in your sample captures?

Thanks,
Rob

On Wed, Apr 2, 2014 at 2:56 AM, RonaldG notifications@github.com wrote:

Hi,

Did anyone got USB communication failures when using FX3 GPIF interface?

See http://www.cypress.com/?app=forum&id=167&rID=74739

Regards,

Ronald

Reply to this email directly or view it on GitHubhttps://github.com//issues/231
.

[RonaldG]

Hi Rob,

Thanks, we will take care of it.
The hardware (Altera ArriaV SoC connected to FX3 through GPIF) is under development (layout just started).

Regards,
Ronald