TGL platform - eye diagram

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Ivan_Lee
Level 5
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Distributor - Zenitron(GC)
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We use Host SDK to implement TGL platform  

Currently we have one fail item in eye diagram.

How to adjust BB-RETIMER ( ex : EQ ) to improve eye diagram?

 

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Pranava_YN
Moderator
Moderator
Moderator
100 likes received 500 replies posted 250 solutions authored

Hi,

You can control BB-RETIMER parameters using the Host Processor Interface (HPI). 

Please refer to BB-RETIMER documentation to check what parameters can be adjusted. 

Also, please let me know which eye diagram test is failing.

Best regards,
Pranava

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Pranava_YN
Moderator
Moderator
Moderator
100 likes received 500 replies posted 250 solutions authored

Hi,

You can control BB-RETIMER parameters using the Host Processor Interface (HPI). 

Please refer to BB-RETIMER documentation to check what parameters can be adjusted. 

Also, please let me know which eye diagram test is failing.

Best regards,
Pranava
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Ivan_Lee
Level 5
Level 5
Distributor - Zenitron(GC)
100 replies posted 5 likes given 100 sign-ins

Hi, Pranava

USB3.0 eye diagram test is failing

Do you mean we can use HPI to write BB-RETIMER parameters to improve signal quality?

BR

Ivan

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Ivan_Lee
Level 5
Level 5
Distributor - Zenitron(GC)
100 replies posted 5 likes given 100 sign-ins

Hi, Pranava,

HPI document doesn't describe about BB-RETIMER signal quality adjustment.

Can you give me some info about this?

BR

Ivan

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Pranava_YN
Moderator
Moderator
Moderator
100 likes received 500 replies posted 250 solutions authored

Hi Ivan,

As per my previous comment, please check BB Retimer documentation regarding the parameters that can be configured. HPI provides an interface for EC to communicate with BB Retimer via I2C interface. 

May I know if you have appropriate documentation of BB Retimer?

Best regards,
Pranava
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Ivan_Lee
Level 5
Level 5
Distributor - Zenitron(GC)
100 replies posted 5 likes given 100 sign-ins

Hi, Pranava

Sorry, i don't have.

BR

Ivan

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