DS90UB914A-Q1: Eye pattern evaluation method

Shuji Ishiwata

Part Number: DS90UB914A-Q1

Hi Team

I have a question at DS90UB914A-Q1.
When performing Eye pattern evaluation, probe with RIN pin and monitor with oscilloscope.
At that time, can I turn off the back channel?Please tell me how to turn off the back channel.

Or you can not turn off the back channel, so monitor only with CMLOUT pin?

Best Regards,
Ishiwata

over 6 years ago

0 Steven(Shenzhen) Shi over 6 years ago

TI__Mastermind 30515 points

Ishiwata,
both options are available. you can set 0x45 as 0xF0 to disable the bc. to enable CMLout, you can set 0x3F[4] = 0.

regards,
Steven

0 Shuji Ishiwata over 6 years ago in reply to Steven(Shenzhen) Shi

Mastermind 8010 points

Steven,

Thank you for your response.
0x45 is not described in the data sheet, but is it a function that is not open to the public?

Best Regards,
Ishiwata

0 Steven(Shenzhen) Shi over 6 years ago in reply to Shuji Ishiwata

TI__Mastermind 30515 points

Yes, it is right. it is used just for test.

regards,
Steven

0 Shuji Ishiwata over 6 years ago in reply to Steven(Shenzhen) Shi

Mastermind 8010 points

OK. I understood.
Thank you for your support.

Best Regards,
Ishiwata

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DS90UB914A-Q1: Eye pattern evaluation method