SI4826-DEMO Datasheet, PDF (7/18 Pages) Silicon Laboratories – Si4822/26 DEMO BOARD USERS GUIDE

Si4822/26-DEMO
Button/Mode
POWER/BAND hold Time
< 1s
hold Time
> 1s
DE/SPC
BASS/TMR
Table 1. Key Function Description
None
Time Mode
Tuner Off
Enable radio
FM/AM/SW Radio Mode
Tuner On
Change between FM, AM, and SW (1 FM
band, 1 AM band and 8 SW bands)
Disable radio function and enter Time mode
(Radio parameters will be saved to MCU).
None
FM mode: Change De-emphasis, between
50 µs and 75 µs.
AM mode: Change channel space, between
9 kHz and 10 kHz.
Enter or quit time setting menu. Decrease Bass/Treble level by 1 step.
TREBLE/AL
Enable or disable the alarm
function; enter or quit alarm
setting menu.
UP/VOL+
hold Time < In setting menu, change the
1s
current time/alarm parameter
by one unit per each press.
hold Time
> 1s
In setting menu, change the
current time/alarm parameter
automatically.
DOWN/VOL-
hold Time < In setting menu, change the
1s
current time/alarm parameter
by one unit per each press.
hold Time
> 1s
In setting menu, change the
current time/alarm parameter
automatically.
SETTING
hold Time < None
1s
hold Time
> 1s
None
Increase Bass/treble level by 1 step.
In radio setting menu, change the current
parameter by one unit per each press.
In radio working mode, increase volume 1
step per each press.
In radio setting menu, change the current
parameter automatically.
In radio working mode, increase volume
level automatically until to maximum.
In radio setting menu, change the current
parameter by one unit per each press.
In radio working mode, decrease volume 1
step per each press.
In radio setting menu, change the current
parameter automatically.
In radio working mode, decrease volume
level automatically until to minimum.
In radio setting menu, change the selected
item per each press.
Quickly return to FM working mode.
Rev. 0.1
7