Rtd LAN17255HR Manuel d'utilisateur télécharger pdf (Page 12)

RTD Embedded Technologies, Inc. | www.rtd.com 12 LAN17255HRHR User’s Manual

CN14, CN15,

CN18, CN19,

and CN20 Pin

Function

10/100 Function

Link at 10 Mbps

Low when linked at 10 Mbps, blink for activity

Link at 100 Mbps

Low when linked at 100 Mbps, blink for activity

Link at 1000 Mbps

Low when linked at 1000 Mbps, blink for activity

3.3 volts or ground

Depends on JP1 setting

If JP1 1-2 is shorted these pins will be ground

If JP1 2-3 is shorted these pins will be 3.3 volts

Table 7: CN14, CN15, CN18, CN19, and CN20 External LED

3.3.6 CON1 AND CON2 POWER CONNECTORS

CON1 and CON2 are input power connectors. CON1, labeled Vin, accepts +7.5 – +36.0 VDC and converts it to +5 volts. The +5 volts is then

diode ORed with the CON2 input, labeled +5V, input power, so either input can be used. Only one of these inputs is required for operation. If

both are connected, the board will only draw power from the higher of the +5 volt input or the output of the +7.5 – +36 volt to +5 volt converter.

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Rtd LAN17255HR Manuel d'utilisateur Page 12