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82555 — Networking Silicon
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Datasheet
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.
Figure 9. Clock Signal Example
X1
TXCLK
CLK
RIC
PHY1
PHY2
PHY3
X1 X1
TXCLK TXCLK
PC-3691
2.5/25 MHz (10/100)
2.5/25 MHz (10/100)