SI4840-DEMO Datasheet, PDF (13/22 Pages) Silicon Laboratories – Si4840/44 DEMO BOARD USERS GUIDE

Si4840/44-DEMO
4.2.2. MCU Setting Radio Working Mode
The host MCU can set the radio working mode. The working mode includes:
 Tone/volume mode (only for FM mode), item 6 in the setting menu
 Tuning preference (only for the FM and SW), item 7 in the setting menu
 Forced mono audio/ST audio (only for FM)
To set the radio working mode, follow these steps:
1. Press the SETTING button to enter item 6. The LCD displays the item number st6 for 1 second, then
automatically switches to its mode indication.
2. Press the DOWN/VOL– or UP/VOL+ button to select the desired mode within 3 seconds.
3. Repeat steps 1 and 2 to set the tuning preference by setting item 7.
4. When the radio working mode is set, the MCU automatically quits the setting menu if there is no operation
within 3 seconds.
5. Press the MONO/ST button to select forced mono audio or ST audio in FM mode when necessary.
Rev 0.1
13