• State
  • Locked Locked
  • Replies 7 replies
  • Subscribers 33 subscribers
  • Views 257 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DP83849I: Need help in shortlisting part number for Network cable tester

Basit Ali Khan
Intellectual 370 points
Part Number: DP83849I
Other Parts Discussed in Thread: DP83869

Tool/software:

Hi,

I need help in finding a network cable tester/diagnostic IC that can acheive the following tests:

- Wire Map Test - Checks for proper pin configurations and identifies wiring errors such as cross-wiring, miswires, and split pairs.

- Continuity Test - Verifies that each conductor in the cable is complete and not broken, ensuring the physical integrity of the cable.

- Cable Length Test - Measures the length of the cable and helps identify if the cable length is within the specifications required for reliable communication. A TDR method would be required, I think.

- Crosstalk Test - Measures the interference between pairs within the cable

- PoE Test - Checks for the presence of PoE on the cable and measures the voltage, verifying if the power levels meet the device requirements.

- IP Configuration Test - Verifies the correct assignment of IP addresses to devices by DHCP and checks for static IP configuration errors

 

I think multiple chips would be required and some analog switches would be needed. Any help in this regard will be very helpful for me.

  • 0
    TI__Mastermind 24988 points

    Hi Basit,

    Are you looking for a IC with only these diagnostic functions, or an ethernet PHY including these functions within its diagnostic toolkit?

    In the latter case, is this an industrial or automotive Ethernet application, and what speeds are required?

    Thank you,

    Evan

  • 0 in reply to Evan Mayhew
    Intellectual 370 points

    Ethernet PHY will be better, or if the features dont come in a single chip then we can use some switch to first run the basic tests and then run the PHY related testing. The PHY related will also include DHCP and DNS Functionality Test, Return Loss Test, IP Ping Test, Throughput Test, Receiver Identification, Endpoint IP Identification Test. Would be best if 1Gbps is available or you can also list 100Mbps.

  • 0 in reply to Basit Ali Khan
    TI__Mastermind 24988 points

    Hi Basit,

    I will check with the team and get back to you. Please expect feedback tomorrow.

    Thank you,

    Evan

  • 0 in reply to Evan Mayhew
    Intellectual 370 points

    Hi Evan,
    Noted. Will be waiting...

    Thanks...

  • 0 in reply to Basit Ali Khan
    TI__Mastermind 24988 points

    Hi Basit,

    Basit Ali Khan said:
    DHCP and DNS Functionality Test, Return Loss Test, IP Ping Test, Throughput Test, Receiver Identification, Endpoint IP Identification Test

    These tests are achieved on the application layer through the SoC - our PHYs do not contain dedicated diagnostic functions for this. If link is up between endpoints, I expect these tests can be performed through the SoC.

    Return loss cannot be measured directly through our PHYs, however we do have PHYs with internal SQI (signal quality index) diagnostics to measure the signal to noise ratio of the link and infer link health from this.

    The other diagnostic feature commonly offered is TDR (time domain reflectometry), used to estimate cable length and identify the locations of potential cable faults and discontinuities.

    Here are the PHYs sorted by speed and diagnostic features:

    1Gbps, TDR support: DP83867, DP83869 

    100Mbps, TDR support: DP83822, DP83825

    100Mbps, TDR, SQI support: DP83826

    Please let me know if I can clarify further.

    Thank you,

    Evan

  • 0 in reply to Evan Mayhew
    Intellectual 370 points

    Thanks but how to acheive Wire Map Test as the PHY will not support it and there has to be some scheme to it. Secondly for PoE how to get the class identification and power supported at the PD side by the PoE switch. All the ICs can achieve the required supported class by auto negotiotion of class but does not provide info about on which class it is running or maximum class supported by the PoE switch through some indication LEDs or through some registers over I2C.

  • 0 in reply to Basit Ali Khan
    TI__Mastermind 24988 points

    Hi Basit,

    DP83867/DP83869 support wire cross indication if any MDI pair is mismatched relative to its link partner:

    Is this the same as the Wire Map Test you are referring to?

    Our PHYs do not support automatic power class detection, this will have to be achieved through the processor. The processor can poll for information on maximum power class, and set the PHY registers for the appropriate class using MDC/MDIO.

    Thank you,

    Evan