How to distinguish single-ended impedance and differential impedance from PCB impedance report of board factory? Is there any trade term to express it? For example, how to distinguish between differential and single-ended? General manufacturers will have their own list, indicating whether it is single-ended or differential. But you don't have this form, you can only judge it from the controlled impedance value.

If it is a single-line impedance, you can know that it is single-ended by controlling impedances such as 50 and 75.

If there is a line width and spacing, similar to 5/5mil, and the impedance is 90, 100, then it is a difference.