Ethernet PHY - Length Matching

Ethernet PHY PCB Design Layout Checklist

The total length of each MDI trace should be less than 2 inches, or 2000 mils. 

The traces should be lengthmatched within 20 mils for 1G transmissions and within 50 mils for 100M or 10M transmissions. 

The number of vias and stubs on the MDI traces should be kept to a minimum.

Source TI.com

https://www.ti.com › lit › pdf › snla387

The traces should be length- matched within  . . . 

20 mils for 1G transmissions

50 mils for 100M or 10M transmissions.

Also see Gemini AI: https://g.co/gemini/share/ee650e8e10c5

That's it !

0.5mil Length Matched Diff Pairs

Customer's Requirements for 0.5mil Length matched Signals within the pairs.

Example
Sawtooth settings based on 6mil / 6mil (trace / gap) Diff Pair

Tip:

You have to select the type of tuning before you start tuning a net. 

Hit Tab Key before you start the length matching

Thank you Wayne :)