Post Go back to editing

Clarification on Tx/Rx Latency Specifications for ADIN1110

Category: Datasheet/Specs
Product Number: ADIN1110

Hello,

I’ve reviewed the Q&A postings on the ADIN1100 latency and time synchronization accuracy (links below) and found them helpful. However, I need additional details specific to the ADIN1110, particularly regarding jitter or short‐term variations in access time. We rely on the ADIN1110 not just for data transmission but also as a heartbeat link in a functional‐safety application, so deterministic behavior is critical.

Could you please clarify:

  1. Jitter/Short‐Term Variations

    • Are there published specs for how much variation (min/max or typical) we can expect in the ADIN1110’s Tx/Rx latency (including MAC + PHY) under normal operating conditions?
    • What are the main contributors to this jitter (e.g., internal buffering, clock drift, temperature/voltage changes)?
  2. Guaranteed Worst‐Case Latency

    • Beyond the typical numbers, do you provide guaranteed max latency specifications?
    • In particular, for short frames (e.g., 64 bytes) at 10 Mbps, can you share a worst‐case access time figure factoring in internal overhead?
  3. Calibration or Configuration Options

    • Are there any registers or configuration steps we can use to minimize or calibrate out latency jitter in the ADIN1110?
  4. Functional‐Safety Considerations

    • Has the ADIN1110’s latency performance been validated or characterized for safety‐critical applications?
    • Do you have any recommended design practices to ensure the link remains deterministic over the full temperature/voltage range?

Links Reviewed:

Thank you in advance for any additional information you can provide. Understanding the jitter and worst‐case latency is key for our functional‐safety design.

Best regards,
WB

  • Hi  

    Thank you for reaching out!

    Please see the answers to your query below: 

    Jitter/ShortTerm Variations: We only have typical specifications mentioned in the DS, refer to Table 33.

    Calibration or Configuration Options:

    Can you share more details on how you're planning to measure/calibrate the latency jitter?

    What is the maximum amount of jitter that your application can tolerate?

    FunctionalSafety Considerations: This device goes into a lot of functionally safe applications like process control. Requirements in terms of latency can vary from one application to another. We need to understand what is the acceptable latency jitter for your application to be functionally safe.

    Regards,

    Shazia

  • Hello  

    Thank you for your feedback.

    I understand that Table 33 shows the typical specifications. However, to evaluate the integration of ADIN1110 into a production run of hundreds of thousands of devices, I need detailed statistics on the measurements presented in Table 33—specifically, the variance or range of these values. I assume that the figures provided in Table 33 are average values based on testing multiple units under varying conditions.

    For our application, which can tolerate a jitter of ±1 µs (subject to further validation), understanding the spread of these measurements is crucial.

    I appreciate your assistance and look forward to your detailed feedback.

    Thank you.

        

  • Hello  

    I am looking forward for getting your feedback.