User guide

Si471x-EVB
Preliminary Rev. 0.4 23
6.3. Si47xx Digital Property Window
This Digital Property Window controls the various digital audio input properties on the Si471x. Clicking on
Windows
→Properties when in Digital Mode will launch the Digital Property Window as shown in Figure 22.
Figure 22. Si471x Digital Property Window
Table 4. Si471x Digital Property Window Explanations
Item Explanation Range
Reference Clock
Frequency
This is the internal Reference Clock Frequency on the chip and it is calcu-
lated by dividing RCLK by the prescaler.
31130–34406 Hz
Reference Clock
Prescaler
Reference Clock Prescaler allow the user to have an RCLK from 32 kHz
to 40 MHz. Any RCLK that the user supplies should be divided by this
prescaler to get as close to 32.768 kHz as possible.
1–4095
Varactor Capacitor
Overwrite
This field allows the user to manually overwrite the tuning capacitance. 0
indicates that the tuning cap is automatically adjusted. Any number other
than 0 (1 to 191) will indicate that the tuning cap is manually adjusted.
automatic: 0,
manual: 1–191
Digital Sample
Precision
Select the precision of the digital audio input
8, 16, 20, 24 bits
Digital Mono
Mode Enable
Select between Digital Stereo or Mono
On/Off
Digital Swap
Left - Right
Select whether the DIN L-R data is normal or swapped
On/Off