Si4822/26-DEMO

Rev. 0.1

11

4.2.1. MCU Setting Band Property

The demo board provides the function that the band property can be set by the MCU. The band property includes:

The setting menu is illustrated in Figure 4.

To set the band properties, follow these steps:

1. Press the SETTING button to enter the setting menu and select the item to be set. The selected item

flashes for 1 second, then automatically switches to its current value.

2. While the value is flashing, press the DOWN/VOL- or UP/VOL+ button to set the desired value within 3

seconds.

3. Repeat step 1 and 2 to finish setting the band properties.

4. When the band properties are set, the MCU automatically quits setting menu if there is no operation within

3 seconds.

5. In FM working mode, press the DE/SPC button to set the De-emphasis 50 µs or 75 µs.

6. In AM working mode, press the DE/SPC button to set the Channel Space 9 kHz or 10 kHz.

Figure 4. Setting Menu

S E T T ING M E NU :

1 BA ND T O P

2 BA ND B O T T O M

3 T O NE /V O L M O DE

4 T u nin g p referen c e

a prefe re n c e 1

b prefe re n c e 2

a B a s s /T re ble M O D E

b Dig -V o l M O DE

c MIX MO D E 1

d MIX MO D E 2