Eurotech Appliances Eurotech Ethernet Adapter An0038 User Manual

Page 11

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Application Note


Generic Ethernet adapter

Eurotech has developed a fail-safe circuitry that can be installed to prevent faulty and damages. To prevent
wrong connections between the CPU-1220 and the Ethernet adapter Eurotech has developed a generic
adapter that can be used together with the CPU-1220 for installing both the Realtek chips.

The following drawing describes the solution for a generic Ethernet adapter tolerant regarding the supply
voltage present on pin 1 of J4 CPU-1220 Ethernet connector and based on the version of the Realtek
RTL8139 chipset installed, and that may be integrated into a carrier board.

Figure 4.

Generic Ethernet Adapter Schematics

For detailed information regarding the Ethernet Adapter please contact Eurotech.