DS90C189-Q1: DC Balancing possible?

Brian Angiel

Part Number: DS90C189-Q1
Other Parts Discussed in Thread: DS90UH948-Q1, DS90C387

Hi team,

I'm in need of either an HDMI-to-OpenLDI or RGB-to-OpenLDI device. I have found DS90C189-Q1.

On DS90C189-Q1, are the Open LDI lines DC Balanced? I couldn't find this information in the datasheet, but I do see it's highlighted in other datasheets.

Thanks,

Brian

over 6 years ago

0 Charley Cai over 6 years ago

TI__Genius 12866 points

No, the OLDI output will not be DC balanced.

The output will follow the diagrams in datasheet section 8.5.1.

Best Regards,

Charley Cai

0 Brian Angiel over 6 years ago in reply to Charley Cai

TI__Expert 4090 points

Hi Charley,

I thought that would be the case. Thanks for confirming. Do you have any suggestions for HDMI-to-OpenLDI or RGB-to-OpenLDI with DC Balanced OLDI output? This is a hard requirement for me.

Brian

0 Charley Cai over 6 years ago in reply to Brian Angiel

TI__Genius 12866 points

Hi Brian,

Would mind sharing why the DC balanced output is a hard requirement?

Are you going to AC couple the OLDI output?

Best Regards,

Charley Cai

0 Brian Angiel over 6 years ago in reply to Charley Cai

TI__Expert 4090 points

Hi Charley,

I'm still working to determine that. What about DS90UH948-Q1 - are the OLDI lines on this device DC Balanced?

Brian

0 Charley Cai over 6 years ago in reply to Brian Angiel

TI__Genius 12866 points

For UH948, the OLDI outputs are not DC balanced.

The FPD-Link channel is DC balanced.

Best Regards,

Charley Cai

0 Brian Angiel over 6 years ago in reply to Charley Cai

TI__Expert 4090 points

I thought so. Thanks for confirming.

0 Charley Cai over 6 years ago in reply to Brian Angiel

TI__Genius 12866 points

DS90C387 can support OLDI DC balance.

Best Regards,

Charley Cai

0 Brian Angiel over 6 years ago in reply to Charley Cai

TI__Expert 4090 points

Hi Charley,

I appreciate the suggestion, but I require an automotive-qualified device for this HDMI-to-OpenLDI or RGB-to-OpenLDI application.

Thanks,

Brian

0 Charley Cai over 6 years ago in reply to Brian Angiel

TI__Genius 12866 points

Ok. In this case, i have no recommendation.

Best Regards,

Charley Cai

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DS90C189-Q1: DC Balancing possible?