SI4700-EVB Datasheet, PDF (13/44 Pages) Silicon Laboratories – Si4700/01/02/03 EVALUATION BOARD USER’S GUIDE

6.2. Running the Software
6.2.1. FM Receiver Main Window
The FM receiver main window will appear after initialization.
Si4700/01/02/03-EVB
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Figure 8. FM Receiver Main Window
Table 3. FM Receiver Main Window Descriptions
# Name
Explanation(s)
1 Tune/Seek
Tune Down (<), Tune Up (>) buttons execute a single channel step according
to the channel spacing setting. The channel spacing setting can be set in the
property window.
Seek Down (<<), Seek Up (>>) buttons execute a seek up or down to the next
received FM signal meeting or exceeding the seek settings within the selected
band. The seek setting Received Signal Strength Indicator (RSSI) threshold
can be set in the property window.
2 Frequency Slider Bar, The Frequency Display indicates the frequency in MHz. To change the
Mono/Stereo, AFC Rail Frequency, drag the pointer in the Frequency Slider Bar to the desired
frequency. The frequency may also be changed by changing the value in the
display.
AFC Rail indicator will be red if the tuned frequency is in an AFC rail state,
otherwise the indicator will be grey.
The Stereo / Mono Indicator is a tri-state indicator displaying “Stereo” (green),
“Mono” (grey), or forced “Mono” (Yellow). The Stereo / Force Mono state can
be selected by (7).
3 Volume, Mute
Select the Si4700 output volume (0-15) by moving the slider bar pointer. Press
the Mute button to mute the radio. If the radio is muted, the button will be red.
Press the Mute button again to remove the muting.
4 Auto Scan, To Presets, The Auto Scan button will find all the stations that meet the seek threshold
Select Stn
settings in the property window.
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