82555 — Networking Silicon

PHYs connected to the RIC. Signals TXEN, CRS, and PORTEN are connected from each of the 82555 devices to the specified RIC pin. The figure below illustrates an example of multiple 82555s connected to a 25 MHz (or 2.5 MHz) oscillator.

 

 

RIC

 

2.5/25 MHz (10/100)

 

CLK

 

 

 

 

 

TXCLK

TXCLK

TXCLK

 

PHY1

PHY2

PHY3

2.5/25 MHz (10/100)

X1

X1

X1

 

PC-3691

Figure 9. Clock Signal Example

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Datasheet

Page 30
Image 30
Intel 82555 manual Clock Signal Example