App note: PCB design for 10/100 switches and PHY

Design guide on PCB layout from Micrel on 10/100 switches and PHY

This application note is intended to assist customers in

designing products that comply with both EMI and ESD

standards using Micrel’s 10/100 family of Ethernet

products.

The printed circuit board (PCB) is the single most

important factor that affects EMI, ESD and overall

performance. In order to meet these requirements depend

on good design practices. The goal here is to minimize

digital and common mode noise as well as to provide

shielding between the PCB’s internal circuitry and the

external environment. These PCB design practices should

apply to the entire PCB design, not just to Micrel Ethernet

products.