R820T Tuner IC I2C commands

Need help installing or figuring out something about your SDR? Ask here.
Post Reply
rfdave
Posts: 1
Joined: Thu Nov 13, 2014 9:21 pm
Location: USA

R820T Tuner IC I2C commands

Post by rfdave » Thu Nov 13, 2014 9:54 pm

Hello,

Not sure if this is the place to post this but I'm looking for help with the Rafael R820T ic. Specifically with the I2C commands to control frequency tuning of this tuner ic. I have tried to contact Rafael with no response. Is there anyone here who has any information on what I2C commands are used to control this ic?

Here is a brief description of what I'm trying to accomplish. I have a DVB-T receiver that I am using to receive and decode MPEG4 video and audio from a DVB-T transmitter. Unfortunately all of the receivers I have found only have preset channel selections on specific frequencies and BW. I want to connect a I2C bus directly to the R820T ic and use a micro controller to make the DVB-T receiver frequency agile so it cam be tuned to any frequency I choose. I need to make the receiver completely independent to any outside control from a pc and SDR software.

Any help to finding this information would be greatly appreciated.

Thanks for your time.
Dave.

rtlsdrblog
Site Admin
Posts: 2191
Joined: Mon Nov 19, 2012 11:54 pm

Re: R820T Tuner IC I2C commands

Post by rtlsdrblog » Sat Nov 15, 2014 5:34 am

This is a bit more complicated than what most discussion on this forum is about. Also, I don't think Rafael would reply to you as I think the tuner information is actually under NDA.

You could try look through the reverse engineered rtl-sdr driver code on the Osmocom website, or ask on their mailing list for help.

Post Reply