7 Replies Latest reply on Apr 20, 2018 1:27 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.
Like Show 0 Likes(0)

Actions
- 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
  
  Like Show 0 Likes(0)
  
  Actions
  - 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.
    
    Like Show 0 Likes(0)
    
    Actions
    - 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
      
      Like Show 0 Likes(0)
      
      Actions
      - 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.
        
        Like Show 0 Likes(0)
        
        Actions
        
        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
        
        Like Show 0 Likes(0)
        
        Actions
        
        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.
        
        Like Show 0 Likes(0)
        
        Actions

Go to original post

X540 De-emphasis

Re: X540 De-emphasis

Re: X540 De-emphasis

Re: X540 De-emphasis

Re: X540 De-emphasis

Re: X540 De-emphasis

Re: X540 De-emphasis

Re: X540 De-emphasis

Actions

More Like This

Legend