SI4844-B-DEMO Datasheet, PDF (5/18 Pages) Silicon Laboratories – Si4844-B DEMO BOARD USERS GUIDE

Radio Band Property Setting
S13:
1
2-3: Use the keypad to set the band property via MCU
2
1-2: Use the tuner default band setting values
3
Si4844-B-DEMO
Audio Output Test Point:
For general specification test, TP3 is the recommended audio signal test point. The audio test instrument should
be connected to TP3 to get more accurate test results. J5 can also be used as an audio test point, but the test
results may not be entirely accurate under some circumstances.
TP3:
1
Lout
2
Rout
3
GND
Tuner Output Test Point:
For the tuner specification test, TP1 is the recommended tuner output test point. The audio test instrument should
be connected to TP1 to get accurate test results.
TP1:
123
Main Components:
U1: Silicon Laboratories Si4844-B FM/AM/SW ATDD receiver
U2: Audio amplifier
U3: MCU
LCD: The digital display for tuning information
Rev. 0.1
5