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Jmk1's avatar
Jmk1
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1 year ago

Programmation of JHL9020R NVM

Hello, We have designed a motherboard with JHL9020R TBT4 IC. In the datasheet and in the example of design, there is a reference to a Non Volatile Memory. But the precise mappoing of the NVM is no...
RandyT_Intel's avatar
RandyT_Intel
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1 year ago

Hello Jmk1,


I tried to check our database for information related to your inquiry, and here is what I found. I hope it helps!


If you don't mind me asking, may I know the reason for your inquiry? Is this for a project, or are you just looking to test and try something?


I've attached the resources below for your reference. Please feel free to visit them.


Compatibility Information for Intel® Ethernet Network...

Intel® Ethernet Controller X710/XXV710/XL710 Feature Support Matrix


I look forward to hearing from you!


Randy T.

Intel Customer Support Technician


Jmk1's avatar
Jmk1
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1 year ago

I followed the links provided. Unfortunately, it doesn't solve my problem. The JHL9020R is a Thunderbolt retimer, not an ethernet adapter.

In the user's manual of the ic and on the design examples, there is a non volatile memory supposed to contain several configuration informations ( as I2C slave adresses..) .

But the structure of the NVM is not described anywhere, with the functions of all the locations.

Currently, I powered on the motherboard and it seems that the TBT IC was detected, but I don't know yet if it is fully operational (I still need to configure the Power Delivery IC to be sure of this).

Anyway, knowing the NVM contents seems to be mandatory to me.

Regards