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amrutham
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Registered: ‎03-20-2018

Video Phy Standard Operation

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Hi,

 

I wanted to know what the transitions will look like when we probe the m_axis_lnk_tx_lane data lines of DisplayPort TX IP, when the Video PHY is set to work in the "Standard Operation" as suggested by bits [4:2] of TX Control (TXC) - 0x0070 register of the Video PHY. The kind of waveform I could probe is attached herewith. What does this pattern indicate?

 

Thanks in advance.

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dp-tx1_lane0-default_src.jpg
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florentw
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Registered: ‎11-09-2015

Hi @amrutham,

 

What does this pattern indicate?

Nothing... I am not sure about what you are expecting to see... DP is using 8b/10b encoding. So you will see 8b/10b encoded data...


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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florentw
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1,465 Views
Registered: ‎11-09-2015

Hi @amrutham,

 

What does this pattern indicate?

Nothing... I am not sure about what you are expecting to see... DP is using 8b/10b encoding. So you will see 8b/10b encoded data...


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**

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amrutham
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Registered: ‎03-20-2018

Hi Florent,

 

Thank you for the response. The data to the 8b/10b encoder is 00000000. So like you said this must be the encoded data. Thank you for clarifying the doubt.

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