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USB EZ-PD™ Type-C Forum Discussions

Ivan_Lee
Level 5
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Level 5

 

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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PranavaYN
Moderator
Moderator 50 likes received First comment on KBA First question asked
Moderator

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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PranavaYN
Moderator
Moderator 50 likes received First comment on KBA First question asked
Moderator

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
100 sign-ins First like received 50 replies posted
Level 5

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
100 sign-ins First like received 50 replies posted
Level 5

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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PranavaYN
Moderator
Moderator 50 likes received First comment on KBA First question asked
Moderator

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
100 sign-ins First like received 50 replies posted
Level 5

Hi, Pranava

Sorry, i don't have.

BR

Ivan

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