AnsweredAssumed Answered

How to produce pattern of USB 2.0 Host High speed for signal quality test?

Question asked by jeremy sung on Aug 14, 2017
Latest reply on Aug 21, 2017 by Artur Petukhov

Hi NXP,

I followed page 53 and 54 of I.MX6/7 Series USB Certification Guide Rev. 1,02/2017 to do USB2.0 Host High-speed Signal Quality Test.

However, there is no pattern produced from USB host.

Please help to confirmed it.

 

Some information as below:

MCU: I.MX6SL

test port: USB2.0(Host)

Equipment:

oscilloscope:DSA91304A

USB test app: N5416A

differential probe: 1169A

test fixture: E2649-26402 Rev 005.

 

USB 2.0 HOST test fixture connection:

 

EHCI HS test tool:

 

no pattern trigger detect:

 

Thank you!

 

Best Regards,

Jeremy

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