SI4455-2 Datasheet, PDF (5/9 Pages) Silicon Laboratories – The kits support use of the Wireless Development Suite

Si4455-2WayLink-DEMO
connected to the EZRadio chip by default (represented by x in the table above). The user can connect them by
soldering in jumpers across the appropriate pins of J3.
5.1. Setting up and Connecting the RFStick to a PC
The power source of the board can be selected with the power-supply selector switch (S6). If S6 is in the Adapter
position, supply voltage is provided by a Toolstick Base Adapter that is connected to the J1 PCB edge connector. If
S6 is in the Battery position, the supply voltage is provided by two AAA batteries in the battery holder on the bottom
side of the board. Current consumption of the RF part (RFVDD) can be measured on J6. Since J6 is shorted by a
PCB track on the bottom side of the board, the user must cut the track if this feature is used.
Figure 2. How to Connect the RFStick to the PC
Steps for connecting to a PC:
 Select the desired power source with S6 power selector switch.
 Connect the J1 connector of the RFStick to the Toolstick Base Adapter.
 Connect the Toolstick Base Adapter to the USB port of the PC.
 Wait for Windows to install the driver of the Toolstick Base Adapter, if necessary.
The RFStick is available in three different frequency band versions from Silicon Labs as part of several EZRadio
kits.
Rev. 0.4
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