Hi all,

I was looking at Broadcom's parts for (cable) tuner/receivers. I tried to
find other mfrs that make similar products. I found Infineon makes some
stuff for tuners but not the QAM kind for cable. Who else makes QAM tuner
chips? Maybe even simpler than Broadcom since they have all the goodies to
get pay per view events and the on-line tv guide on the same die.

Thanks

In article <7T_Dj.6662$%Y2.1776@trnddc08>, noway@youwish.com says...
Philips/NXP announced the TDA18271HD.
"The TDA18271HD is a Silicon Tuner IC designed mainly for terrestrial
analog and digital TV reception. The TDA18271HD integrates the overall
tuning function, including selectivity.
The TDA18271HD is compatible with all analog and digital TV standards
and delivers a low IF signal to a demodulator (for analog TV) and/or
channel decoder (for digital TV)."

http://www.nxp.com/acrobat_download/...A18271HD_2.pdf

--Gene

On Mar 20, 9:00*am, Gene S. Berkowitz <first.l...@verizon.net> wrote:
Hi,
I am not able to give you the right part number.Search for Tuner ICs
in ST,Connexant.I believe Connexant is cheapest of them all.You will
also get ASICs for STB,DVD player applications.

We are using ST,Connexant in our products and quite happy with the
performance.

Regards,
s.subbarayan

Rodo schreef:
A Tuner would be the TDA8274, specificly for Digital receivers.
Another is the TDA8275, but this is for Analog reception.

The Decoder is the TDA10021, if I remember correctly, which can output
the MPEG TS stream either serially, or 8 bit parallel. It has extented
decoding/filtering/error correction(FEC) features etc.

The TDA chips are controlled bi I2C protocol, so you need a processor
to do the initalisation and settings.

I think you also want the decoder, since you mention pey per view events
and tv-guide.

You will also need something (processor) to decode the TS stream, and if
you want pay per view it must support access control. Here your options
I think become more limited, since this probably needs licensing from
the vendor !

regards,
Hans Bus

Rodo schreef:
Hi Rodo,

NXP (Philips) has several tune IC's you could use,
but I think the TDA8274 is the one you need, specifically
designed for digital reception.

It produces an IF signal you will have to decode. I believe
the decoder you need is the TDA10021. It depend which DVB type
you need to decode (DVB-T,DVB-C, DVB-S ?).

The decoder takes care of decoding, error correction filtering .....
and can output the MPEG TS stream either 8 bit parallel or serially.

The chips are controlled via I2C protocol, also for tuning etc. You
will need a processor to do anything useful with them. There are
drivers for the chips in video for linux I think (or the TDA8275,
for analog reception).

Another tuner could be the XCeive XC3028, Check XCeive site. this
chip can be used for analog and digital reception.

But then you need something to proces the TS (you mention pay per view
and on-line TV guide). This means some form of conditional access and
descrambling. I think this could be a problem, since this is often
dependant on licensing from the chip company. For Free to Air you
shouldn't need conditional acces, but at least something that can
decode/demux the channels from the MPEG TS.

hope this helps,

regards,
Hans Bus