We need some FM Transmitter technical and software support for the WL1283 IEEE 802.111 a/b/g/n BT4.0+FM+GPS solution.
The system that contains this part is a Android ICS(4.0.4) custom system with a 4460 or 4470
Here are some questions we are facing when we try the FM transmitter function. Can you help us to find the answer
1. In the Register setting of FM TX/RX Antenna Select, there are the options 50/200/500 Ohm in source code.
2. Is the audio source of FM TX to be AUDIO_IO_SET (address 63)?
3. 0x01 is I2S, 0x02 is Analog, right?
4. Are the below address setting correct?
Audio Deviation Setting (address: 60)
MPX Limit Enable (address:67)
READ FM ANTENNA TUNE VALUE (address 104)
Since the last I2S bus was occupied by HDMI-in in our case, we have to feed module with R/L analog signals that comes from audio codec.
We need the driver for Android and the related technical document regarding analog channels setting.