Georg, The amazing thing about these Silicon Labs parts is that they require almost no external components. For example the SI470x FM tuners require a crystal and regulator, that is all, they can use headphone cable as antenna (as is done in most phones now), and they have stereo analog output and SPI interface for control and for getting the RDS/RDBS station identification and song info as text. Those analog outputs could feed right into a TI PCM2900 and then you have a driverless USB audio FM tuner. Without access to SPI though a small microcontroller would be required. Could be done with a $2 ARM7 or Cortex-M3.
I haven't looked too closely at the FM transmitters or receivers yet, but I'll take a look and see what kind of external components are required. So you're not even interested in FM tuner, just FM transmitters and receivers? BTW I also have hardware based text-to-speech chips here that work really well and also require few components, they are UART input and analog and/or digital audio output, I have already made one full speech synth for someone using them and have several more chipsets here. I am actually more interested in speech based interfaces to phones and PDAs than the fancy GUIs, might be interesting to bolt one onto a Neo at some point. My phone should READ web pages and email to me and whisper in my ear. -- Doug _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
