[linux-dvb] Re: Hauppauge Nova-T End of Life (Was 3.3v DVB-T Cards)

["Robert Schlabbach" <robert_s@gmx.net>]

From: "Andrew de Quincey" <adq_dvb@lidskialf.net>
> As I said previously, the tda10045 based DVB-T cards definitely work
> in the PCI slots in your picture. Additionally, the cards _have_ the
> two chunks missing - why would TT specifically make the card physically
> compatable with these slots, if it wasn't a universal card?

Why are you even giving credit to the cr*p some store feeds to their
customers? The Nova-T PCI is supposed to be End-of-Life, and they offer a
Nova-T USB instead? How about they just LIE to their customers to sell
whatever they have catching dust in stock...?

As to 3.3V compatibility, just look at the SAA7146A datasheet - it is
actually a *3.3V* part with 5V I/O tolerance. And this is the only PCI
device on the card. The only thing I could imagine depending on 5V supply
would be the antenna supply voltage (and the LNB voltage on DVB-S cards) -
but that is rarely used anyway, so it probably wouldn't matter if it didn't
work.

Aside from that, what is the actual difference between 3.3V and 5V PCI
slots? Is it only that the slot isn't 5V I/O tolerant anymore, or are the
5V _supply_ pins no longer connected either? If the 5V _supply_ pins are
still there on a 3.3V PCI slot, I see no reason at all why _any_ SAA7146A
card shouldn't work in it (unless there are earlier revisions of the
SAA7146A which weren't 3.3V parts).

Regards,
--
Robert Schlabbach
e-mail: robert_s@gmx.net
Berlin, Germany