Si3462-EVB

Rev. 1.2 4/12

Copyright © 2012 by Silicon Laboratories

Si3462-EVB

3. Connectors and Switches

The Si3462-EVB is equipped with two banana jacks and an optional third banana jack on one side and two RJ-45

connectors on the other side.

Figure 2. Placement of Connectors and Switches

The board receives power through the banana jacks:



J1

BLACK banana jack:

GND



J2

RED banana jack:

+50 V nominal input (+45 V to +57 V) for PoE;

+54 V nominal input (+51 V to +57 V) for PoE+



J3

Optional banana jack:

+3.3 V input

An optional onboard +3.3 V shunt regulator generates the supply voltage for the Si3462 from the +50 V input

voltage. The +3.3 V supply voltage may also be provided by an external source through the optional banana jack if

higher efficiency is desired. In this case, the regulator and its associated resistors (including the series resistors)

should be removed.

The RJ-45 Ethernet connectors:



J7

ETHERNET IN

input



J8

PoE

output

Reset pushbutton:



SW1

Mode setting DIP switch:



SW2

These switches set the operating mode according to Table 2 on page 7 including the following:



Available power level (4 W, 7 W, 15.4 W, and 30 W)



Midspan or Endpoint configuration



Automatic restart or restart after disconnection modes of operation

Refer to "6.1. Initialization and Operating Mode Configuration" on page 7 for more details.