BATC Forum

Hello!
I am looking for documentation about the DVB-S demodulator chip CX24116. It seems that the documentation for this demod is a bit confidential.
I want to dialog via I2C with a DVB-S tuner+demod (ALPS) that is made with this CX24116 demod, and with a CX42118 tuner. I already found documentation about the tuner CX24118, but not about the Demodulator CX24116. I don't know how to communicate via I2C with it. How to set all the parameters, and get all useful information about the signal?
Do someone has more information about this component? Or mabe just the I2C messaging?
Could you please help me on this part?

For the context, I can give you more information about my project:
I would like to build a DATV relay, fully digital, but without any PC, and without expensive "SR Systems" modules.

On the transmission side, the project is based on the digilite-ZL hardware.
I already made a digilite, and then a small adaptation board to connect it to a DE0-Nano. The whole can be considered as a Digilite-ZL. This part woks already.
I would like to thank all the people involved in the digilite and Digilite-ZL projects. These are a great improvement for DATV! On the receiver side, the project is based on an ALPS NIM(Tuner + demod). This NIM theoretically sends a TS that is compatible with the Digilite-ZL.
Currently, the I2C Master is an "MBED" microcontroller, just because I already had it. But I will switch later to another microcontroller.
But I lack information about the demodulator, and especially how to use it via I2C. Thanks in advance for your help!
Guillaume - F4HDK.

Hi Guillaume,

Looks like there is a Linux port

http://www.steventoth.net/linux/cx24116/ may give you the firmware

http://www.cs.fsu.edu/~baker/devices/lx ... /cx24116.c might be a good start for linux side

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Glad you have DigiLiteZL working, if you have a link to the project I would like to add it to the main web site

Regards,

Mark

http://www.idesignz.org/DigiLiteZL/DigiLiteZL.htm

Thank you Mark for your answer.

You are right. I think that the C code of the linux driver is the only available information for the CX24116.
Thanks for that. My aim is to manage the CX24116 via a microcontroller. So I will have to understand first the code and then port what I need to the microcontroller. I think that it will be difficult, but I will try.

I don't have any website. It is just the beginning of this project. But I will keep you informed of what I managed to do.

Guillaume - F4HDK