DS90UB914A-Q1: Eye pattern measurement

Youhei Miyaoka

Part Number: DS90UB914A-Q1

Hi experts,

My customer are troubled for eye pattern measurement.

They said the eye diagram is measured, but the eye cannot be formed in normal mode. (Test point: CMLOUOTP/CMLOUTN, PCLK=74.25MHz)

Does the measurement of the DS90UB914A-Q1 eye diagram need to be performed in a specific mode?

Regards,

Youhei MIYAOKA

over 1 year ago

+1 Thomas Bejin over 1 year ago

TI__Mastermind 24941 points

Hi Miyaoka-san,

Thanks for reaching out with this question. Could you confirm that we have enabled the CML outputs in reg 0x3F, and are measuring using a differential probe across a 100 ohm termination resistor?

Best,

Thomas

0 Youhei Miyaoka over 1 year ago in reply to Thomas Bejin

TI__Expert 3975 points

Hi Thomas-san,

Sorry for late reply. The customer will not reply, so this case will be closed. Thank you.

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DS90UB914A-Q1: Eye pattern measurement