SI4844-B-DEMO Datasheet, PDF (8/18 Pages) Silicon Laboratories – Si4844-B DEMO BOARD USERS GUIDE

Si4844-B-DEMO
Table 2. Radio Configuration Parameters
FM Parameter
AM Parameter
SW Parameter
Bass/Treble: 0-8
Bass/Treble: 1-7
Bass/Treble: 1-7
Default: 4
Default: 3
Default: 3
Digital volume: 0-63
Digital volume: 0-63
Digital volume: 0-63
Default: 63
Default: 63
Default: 63
Band top: max 109 MHz
Band top: max 1750 kHz
Band top: max 28.5 MHz
Default: 108/108 MHz for
wide band FM1/FM2
Default: 1710 kHz
Band bottom: min 64 MHz Band bottom: min 504 kHz
Default: 7.6/10.0/18.0/16.0/23.0/22.0/18.0/
22.0 MHz for wide band SW1 to SW8 respec-
tively.
Band bottom: min 2.3 MHz
Default: 87.5 MHz for narrow- Default: 522 kHz
band and 64 MHz for wide-
band.
De-emphasis: 50 or 75 µs Channel space: 9 or 10 kHz
Default: 3.2/3.2/5.9/7.0/7.0/9.0/9.5/10.0 MHz for
wideband SW1 to SW8 respectively.
Default: 75 µs
Default: 9 kHz
TONE/VOL mode: a-d
Default: d
Tuning preference: a-d
Tuning preference: a-d
Default: a
Default: a
Notes:
TONE/VOL mode has four modes:
1. Bass/treble mode: no digital volume control, fixed volume level at 59.
2. Digital volume mode: no bass/treble effect, volume levels from 0 to 63.
3. Mixed mode 1: bass/treble & digital volume coexist, volume levels from 0 to 63, scale to 0 ~59.
4. Mixed mode 2: bass/treble & digital volume coexist, volume levels from 0 to 63.
The Tuning preference of FM mode has four selections:
1. preference1: When tuning to adjacent channels, allow stereo separation and stereo indicator is on, the volume level
decreases by2 dB.
2. preference2: When tuning to adjacent channels, allow stereo separation and stereo indicator is on, the volume level
remains unchanged.
3. preference3: When tuning to adjacent channels, disable stereo separation and stereo indicator is off, the volume level
decreases by 2 dB.
4. preference4: When tuning to adjacent channels, disable stereo separation and stereo indicator is off, the volume level
remains unchanged.
The Tuning preference of SW mode has two selections:
1. preference1: When tuning to adjacent channels, the volume level decreases by 2 dB.
2. preference2: When tuning to adjacent channels, the volume level remains unchanged.
There is no tuning preference selection for AM mode.
8
Rev. 0.1