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Topic: TV chips.. (Read 149 times) previous topic - next topic

cjdelphi

I was under the impression that the cpu did the workload ?

http://www.elektor.com/news/Tiny-hybrid-TV-Tuner/


It's not like I'm going to connect this via i2c on my Arduino now is it? (But I guess I could control it via an Arduino)

Henry_Best

At 3mm square, I'm likely to lose it before I can use it.  :)

JoeN

#2
Nov 04, 2014, 10:15 am Last Edit: Nov 04, 2014, 10:25 am by JoeN
I was under the impression that the cpu did the workload ?

http://www.elektor.com/news/Tiny-hybrid-TV-Tuner/

It's not like I'm going to connect this via i2c on my Arduino now is it? (But I guess I could control it via an Arduino)
It looks like the IC takes RF in, does all the tuning, signal extraction, ADC, and then puts the data out on a differential pair, LIF_P and LIF_N.   I am going to make a cautious guess that the  that data rate is going to be too damn high for the Arduino to handle.  How you consume that high speed digital data and present it on a display, I don't know (ASIC or FPGA?), but I do know an Arduino won't be of much help.  Sure, an Arduino can probably control it via the I2C port.

They only provide short data sheets for even the last generation of this product:

http://www.silabs.com/products/video/hybrid-tv-tuner/Pages/Si21x7.aspx

They don't say so directly, but this looks like an NDA product so good luck getting any documentation.  What is your interest in this IC?
I have only come here seeking knowledge. Things they would not teach me of in college.

MarkT

It looks like the IC takes RF in, does all the tuning, signal extraction, ADC, and then puts the data out on a differential pair, LIF_P and LIF_N.   I am going to make a cautious guess that the  that data rate is going to be too damn high for the Arduino to handle.
Well quite... probably sample rate around 25MSPS, 2 channels at perhaps 8 or 10bit... ie 500Mb/s over LVDS
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cjdelphi

It sparked my interest when I saw i2c :)  that is all lol

Boardburner2

I2c is probably for the control or configuration registers

AWOL

I2c is probably for the control or configuration registers
Yup - a few years ago we had someone get all excited because they saw a spec for a mobile phone camera with I2C interface, but of course, that was only for command and configuration, not image data.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

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