SI47XX-EVB Datasheet, PDF (61/164 Pages) Silicon Laboratories – Thank you for purchasing the Silicon Laboratories

Si47xx-EVB
6. FM Receiver GUI
The first Si47xx window is the Initialization window as shown in Figure 50.
Select the FM receiver function.
As an FM receiver, analog audio out is available on pins 13 and 14.
6.1. Configuring the Si47xx as an FM Receiver
Select the device, busmode, firmware revision, and initial part settings and then click Initialize. A new window
displaying "Initializing FM Receiver" will appear. If you check “Use XOSCEN,” the daughtercard crystal and on-chip
oscillator will be used to clock the Si47xx. Crystal operation is not supported on Si474x-EVB (that supports Si4740/
41/42/43/44/45) and Si4749-EVB. You can use the EVB Audio Settings drop down box to select the audio mode
used by the Si47xx part. See Section 2.1.4 of the Si47xx-EVB User’s Guide for more information on this setting.
The Si4749 can also be programmed as an RDS only tuner. This selection is available through the EVB Audio
Setting drop down box as well.
Note: As of February 2011, SPDIF is not supported on new EVBs. Modes of operation requiring the SPDIF will not be available
in the initialization window for those boards.
Figure 50. FM Receiver Initialization
Rev. 0.8
61