RTL8366/8369 & RTL8212
Layout Guide
RTL8366/8369 & RTL8212 Layout Guide
9
Track ID: JATR-1076-21 Rev. 1.1
3.1.
Ethernet MDI Differential Signals
•
Keep differential-pair impedance at 100
Ω±
10%, single-ended impedance at 60
Ω±
6%.
•
All microstrip traces of a differential pair should be 5-mil wide with a 7-mil wide air gap spacing
between the trace of the pair.
•
Keep differential pairs as close as possible and route both traces as identically as possible,
meaning width, length, and location.
•
Avoid vias and layer change if possible.
•
MDI Differential layout reference is show in Figure 6.
Figure 6. MDI Differential Layout Reference
