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SN75LVPE802: Threshold detector, Squelch timer and OOB

David Park
Expert 6050 points
Part Number: SN75LVPE802

Hi,

Please check below 2 questions.

1. Is Threshold detector and squelch timer in below block same as OOB?

This is redriver block diagram from Intel.

2. V(OOB) Input OOB threshold is OOB entry threshold?

3. What does OOB differential delta and OOB common-mode delta mean?

4. When OOB common-mode delta is below 50mV, does squelch timer send disable command to driver?

  • 0
    TI__Guru* 93670 points

    Hi David,

    1). These two blocks implement OOB function. 

    2). Input OOB threshold is the point where OOB is detected.

    3). OOB Differential is where we look at the signal differentially - positive and negative input signals. Versus common mode OOB where we measure single ended mode - common mode delta.

    4). Worst case scenario is that OOB common-mode is 50mV. Meaning it could be less than 50mV and we can still detect OOB - given input OOB threshold criteria is met.

    Regards,, Nasser