15 Replies Latest reply on Apr 25, 2018 1:19 PM by Carlos_A

X540 De-emphasis

rdebacker Apr 12, 2018 7:38 AM

How do I set the transmitter de-emphasis level to -3.5dB on the X540-BT2?

Re: X540 De-emphasis

Carlos_A Apr 12, 2018 11:23 AM (in response to rdebacker)

Hello, rdebacker:

Thank you for contacting Intel Embedded Community.

In order to be on the same page, could you please tell us if your question is related to the Intel 10 Gigabit Dual Port X540-BT2 I/O Module Network Adapter or the Intel(R) Ethernet Controller X540?

Waiting for your reply.

Best regards,
Carlos_A.
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- Re: X540 De-emphasis
  
  rdebacker Apr 12, 2018 12:46 PM (in response to Carlos_A)
  
  Carlos,
  My question concerns the X540 10Gb Ethernet Controller.
  
  Thanks
  Rene
  
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  - Re: X540 De-emphasis
    
    Carlos_A Apr 12, 2018 5:06 PM (in response to rdebacker)
    
    Hello, rdebacker:
    
    Thank you for your clarification.
    
    We suggest you review the information stated in section 9.3.11.13, on page 869 of the Intel(R) Ethernet Controller X540 Datasheet document # 333168.
    
    We hope that this information may help you.
    
    Best regards,
    Carlos_A.
    
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    - Re: X540 De-emphasis
      
      rdebacker Apr 16, 2018 6:51 AM (in response to Carlos_A)
      
      Carlos,
      This bit is read-only and provides status.
      I need a method for setting de-emphasis to -3.5dB.
      
      Thanks
      Rene
      
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      - Re: X540 De-emphasis
        
        Carlos_A Apr 17, 2018 1:26 PM (in response to rdebacker)
        
        Hello, rdebacker:
        
        Thanks for your reply.
        
        In order to better understand your request, could you please let us know the purpose to have this information?
        
        Waiting for your reply.
        
        Best regards,
        Carlos_A.
        
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        Re: X540 De-emphasis
        
        rdebacker Apr 17, 2018 2:41 PM (in response to Carlos_A)
        
        Carlos,
        I am debugging an issue I am having connecting to the PCIe bus.
        Current de-emphasis level is -6dB. 2 of 5 prototypes will not link.
        PCIe lanes are very short - 1.5 inches.
        I would like to see if -3.5dB would help resolve this issue.
        
        Thanks
        Rene
        
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        Re: X540 De-emphasis
        
        Carlos_A Apr 20, 2018 1:27 PM (in response to rdebacker)
        
        Hello, rdebacker:
        
        Thanks for your update.
        
        Based on your previous communications, could you please let us know the sources that you have used to develop the design related to this situation? please include names and numbers of the documents associated to this.
        
        We really appreciate your cooperation.
        
        Best regards,
        Carlos_A.
        
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        Re: X540 De-emphasis
        
        rdebacker Apr 23, 2018 12:45 PM (in response to Carlos_A)
        
        Carlos,
        I have reviewed the following Intel specs regarding this issue:
        
        Intel Ethernet Controller X540 Datasheet                                       Order #333168-002 Revision: 3.0 January 2016
        Intel Ethernet Controller X540 Frequently Asked Questions          September 2013 Revision 2.6
        X540/I350-BT2 Reference Design                                                  Rev 2.1 11/27/2012
        X550-BT2/X540/I350-BT2 Reference Design                                 Rev 1.9 10/10/2015
        
        Thanks
        Rene
        
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        Re: X540 De-emphasis
        
        Carlos_A Apr 23, 2018 1:06 PM (in response to rdebacker)
        
        Hello, rdebacker:
        
        Thanks for your update.
        
        Please let me paraphrase my previous communication, could you please let us know the documents and their numbers that you have used to design the board that is experiencing this technical problem?
        
        Waiting for your reply.
        
        Best regards,
        Carlos_A .
        
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        Re: X540 De-emphasis
        
        rdebacker Apr 23, 2018 3:36 PM (in response to Carlos_A)
        
        Carlos,
        
        Here are the available part number plus a few more satellite documents...
        
        333168            Intel Ethernet Controller X540 Datasheet                                            Order #333168-002 Revision: 3.0 January 2016
        No Number     Intel Ethernet Controller X540 Frequently Asked Questions               September 2013 Revision 2.6
        No Number     X540/I350-BT2 Reference Design                                                       Rev 2.1 11/27/2012
        333900           X550-BT2/X540/I350-BT2 Reference Design                                      Rev 1.9 10/10/2015
        466430           Intel Ethernet Controller 10G X540-AT2/BT2 Controller Checklists     Revision 2.04 6/5/2013
        No number     Intel Ethernet Controller I350-A Checklists                                          Revision 2.11 8/29/2011
        334566           Intel Ethernet Controller X540: Specification Update                          Rrevision 3.4 1/3/2018
        
        Thanks
        Rene
        
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        Re: X540 De-emphasis
        
        Carlos_A Apr 24, 2018 9:34 AM (in response to rdebacker)
        
        Hello, rdebacker:
        
        Thanks for your clarification.
        
        Could you please tell us if the affected design has been reviewed by Intel?
        
        Waiting for your reply.
        
        Best regards,
        Carlos_A.
        
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        Re: X540 De-emphasis
        
        rdebacker Apr 24, 2018 12:17 PM (in response to Carlos_A)
        
        Carlos,
        This design has not been reviewed by Intel.
        Our use Altium for schematic capture and Altium is not supported by Intel's automated review tool.
        
        Thanks
        Rene
        
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        Re: X540 De-emphasis
        
        Carlos_A Apr 24, 2018 12:43 PM (in response to rdebacker)
        
        Hello, rdebacker:
        
        We suggest you send your design to be reviewed by Intel using the Design Review Service. The procedure to use it is stated on the following website:
        
        https://edc.intel.com/Tools/Design-Review/Default.aspx?language=en
        
        Please send it and let us know if the recommendations provide to you may solve the cited problem.
        
        Waiting for your feedback.
        
        Best regards,
        Carlos_A.
        
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        Re: X540 De-emphasis
        
        rdebacker Apr 25, 2018 11:17 AM (in response to Carlos_A)
        
        Carlos,
        
        We use Altium for schematic capture.
        The Intel automated schematic tool does not support Altium.
        
        Rene
        
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        Re: X540 De-emphasis
        
        Carlos_A Apr 25, 2018 1:19 PM (in response to rdebacker)
        
        Hello, rdebacker:
        
        Thanks for your confirmation.
        
        We suggest you previous use Intel Schematic Review service as a reference apply the suggestion stated at:
        
        https://www.altium.com/documentation/15.1/display/ADES/WorkspaceManager_Cmd-ExportToPDF((ExportToPDF))_AD
        
        We hope that this information may help you.
        
        Best regards,
        Carlos_A.
        
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