Eurotech-appliances Eurotech Ethernet Adapter An0038 Manual de usuario descargar pdf (Pagina 8)

8 Application Note

Comparing the CPU-1220 serial number

with the following table is possible to detect the installed chipset

version:

Table 1. CPU-1220 RTL8139 chipset version

CPU-1220 Eurotech s/n Realtek RTL8139 version

Till S.N. 229904389 B

Starting from 03M241 S.N. 229904390 C

Ethernet interface

The CPU-1220 module provides the following interfaces:

 J4 for a 10/100 Ethernet (LAN) connection. J4 is a 5x2 pin – 2.54mm step connector

 J9 for status LEDs: one for the HDD status, three for the Ethernet status. J9 is a 3x2 pin - 2mm step

connector

LED

IDE

Ethernet

Figure 2. J13 IDE Connector layout

J4: CPU-1220 Ethernet connector

The J4 Ethernet connector is a 5x2 pin with 2.54-mm step. Refer to the following table for the Ethernet

connector assignment.

Table 2. J4 Ethernet Connector

Pin#

Signal Function

1 +5V or +3,3V

Power Supply

2 LED0 On sending packets

3 RX+ 100/10Base-T receive data

4 RX- 100/10Base-T receive data

5 LED1 Link 10/100

The Serial number of the CPU-1220 board is a bar code label printed on the PC/104 connector and

consists of a 10 characters length code.

Depending on the Realtek chipset installed: if Realtek RTL8139B is installed power supply is +5V, if

RTL8139C is installed +3,3V supplied. For detailed electrical information please refer to the chipset

datasheet.

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Eurotech-appliances Eurotech Ethernet Adapter An0038 Manual de usuario Pagina 8