SN65DP159: HDMI2.0 Vswing compliance test fail

Emi MAtsumoto

Prodigy 10 points

Part Number: SN65DP159
Other Parts Discussed in Thread: TMDS181RGZEVM, TMDS181

Hi team,

We use SN65DP159 as HDMI2.0 retimer and HDMI2.0 Vswing compliance test failed.

Could you give me a guide to adjust the register or Vsadj?

And we cannot take the compliance test more than once.

Can we use TMDS181RGZEVM to adjust the DP159?

Thank you.

over 3 years ago

0 David (ASIC) Liu over 3 years ago

TI__Guru**** 176991 points

Hi,

You can refer to Figure 3 and section 10.3.1 of the DP159 datasheet. When Vsadj decreases, the Vswing increases and VL decreases. When Vsadj increases, the Vswing decreases and VL increases.

Thanks

David

0 Emi MAtsumoto over 3 years ago in reply to David (ASIC) Liu

Prodigy 10 points

Hi,

Thank you for your quick reply.

Could you answer about TMDS181RGZEVM ?

We have a plan to use it instead of the oscilloscope for the occompliance test.

Thanks

0 David (ASIC) Liu over 3 years ago in reply to Emi MAtsumoto

TI__Guru**** 176991 points

Hi,

I don't fully understand the question on using the TMDS181EVM to adjust the DP159, do you mean using the EyeScan SW?

Thanks

David

0 Emi MAtsumoto over 3 years ago in reply to David (ASIC) Liu

Prodigy 10 points

Hi,

Yes, I mean using the EyeScan SW.

Thanks

0 David (ASIC) Liu over 3 years ago in reply to Emi MAtsumoto

TI__Guru**** 176991 points

Hi,

Yes, the EyeScan SW supports both the TMDS181 and the DP159.

Thanks

David

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SN65DP159: HDMI2.0 Vswing compliance test fail