DS90UB940-Q1: whether Mipi need to add 100 ohm

Amelie Zheng

Genius 10865 points

Part Number: DS90UB940-Q1

Hi Team,

May I ask whether 940 need to add 100ohm in mipi output?

do you recommend to add 100 ohm or not in design? If don't add, does it have risk?

Thanks!

over 5 years ago

0 Hamzeh Jaradat over 5 years ago

TI__Guru** 108420 points

Hello Amelie,

on our Reference design, these are marked as "Open" means not pupolated.

These are only their to terminate the differential pairs if they are not connected to a processor or other device, to avoid having open stups. But on a real applications, these traces will be connected to an SoC and you do not need to add the 100ohm.

0 Amelie Zheng over 5 years ago in reply to Hamzeh Jaradat

TI__Genius 10865 points

Hi Hamzeh,

May I ask whether it will impact the SOC signal if adding the 100 ohm?

0 Hamzeh Jaradat over 5 years ago in reply to Amelie Zheng

TI__Guru** 108420 points

Hello Amelie,

Yes it will have impact since the SoC has internal termination.

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DS90UB940-Q1: whether Mipi need to add 100 ohm