Hello! I´m looking for a CTCSS encoder/decoder IC. I used to use CML´s MX465, but become obsolete years ago and now I´m having problems to find it besides grey market. CML recommends CMX138A. But the interface is this weird C-BUS protocol. I searched and found nothing about interfacing with Atmel or even some C code examples.
Anyone have suggestions where to look or maybe a suggestion for a friendly CTCSS IC with a most common interface?
Thanks in advance.