2. Getting Started: Powering Up the Si3406-non-ISO-FB EVB
Ethernet data and power are applied to the board through the RJ45 connector (J1). The board itself has no Ethernet data transmission
functionality, but, as a convenience, the Ethernet transformer secondary-side data is brought out to test points.
The design can be used in Gigabit (10/100/1000) systems as well by using PoE RJ45 Magjack, such as type L8BE-1G1T-BFH from Bel
Fuse.
Power may be applied in the following ways:
• Using an IEEE 802.3-2015-compliant, PoE-capable PSE, such as Trendnet TPE-1020WS
• Using a laboratory power supply unit (PSU):
• Connecting a dc source between blue/white-blue and brown/white-brown of the Ethernet cable (either polarity), (End-span) as
shown below:
Figure 2.1. Endspan Connection using Laboratory Power Supply
• Connecting a dc source between green/white-green and orange/white-orange of the Ethernet cable (either polarity), (Mid-span)
as shown below:
Figure 2.2. Midspan Connection using Laboratory Power Supply
UG332: Class 3 Non-Isolated Evaluation Board for the Si3406
Getting Started: Powering Up the Si3406-non-ISO-FB EVB
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