[linux-dvb] Re: New card: Lorenzen DVB-T PCI (TT budget)

[Holger Waechtler <holger@convergence.de>]

Alex Woods wrote:
> > I'm not talking about the USB level but the i2c level communication.
> > Nobody guarantees you that all i2c transfers are intiated by the host
> > PC, right?
>
> Right, but inside the box, there is an 8-pin connector, not a 16-pin one, near 
> the frontend chip.  Can I snoop that?
You can connect your i2c snoopy to any i2c device on the board. Usually 
it's most easy to access the SCL and SDA lines at the i2c EEPROM on the 
board (usually one of the 24LCXX family) and connect the GND wire to the 
chassis.

The tuner module pins are good test points too, at least when you know 
the pinout, the PLLs inside are usually more fine-pitch and harder to 
access, but if you've solid soldering skills you can connect your wires 
there, too.

If you have microprobes it's much easier to access the test points, you 
don't have to solder anymore. But they tend to be a bit expensive...

Holger



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