UK Digital TV STB Chips

billyboy · 28th April 2003, 11:08 AM

I've just bought a Goodmans GDB2 Digital TV box which uses
the Omega STI5518BVC chip to do all it's MPEG decoding. One of the
advertised features in the ST blurb sheet (http://us.st.com/stonline/products/p...i5518-1101.pdf) is digital audio
SPDIF. Goodmans didn't wire this up in their box (and may not have enabled
it in the chip) but I'd like to know the pin outs to see if it works. I can't find a data sheet
on the web (or www.st.com) so does anyone know where I can get one?
Bill

dhaen · 28th April 2003, 12:01 PM

Hi Bill,

Sorry to sound pessimistic, but IF that chip is capable of coding and driving SPDIF, it probably needs to be instructed to do so. Whatever chip gives you the menu system is probably a microcontroller which sends those kind of instructions to the ST chip at power-up.
I hope I'm wrong...

Cheers,

alvaius · 30th April 2003, 03:08 AM

Pin 57 is the SPDIF output pin, but there is no guarentee it is enabled, or what will be there. It could be compressed or not compressed as well.

The 5518 has a built in processor and would just pull the program code from flash in all likelihood.

Good Luck!

28th April 2003, 11:08 AM	#1
billyboy diyAudio Member Join Date: Feb 2003 Location: Wales	UK Digital TV STB Chips I've just bought a Goodmans GDB2 Digital TV box which uses the Omega STI5518BVC chip to do all it's MPEG decoding. One of the advertised features in the ST blurb sheet (http://us.st.com/stonline/products/p...i5518-1101.pdf) is digital audio SPDIF. Goodmans didn't wire this up in their box (and may not have enabled it in the chip) but I'd like to know the pin outs to see if it works. I can't find a data sheet on the web (or www.st.com) so does anyone know where I can get one? Bill

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28th April 2003, 12:01 PM	#2
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	Hi Bill, Sorry to sound pessimistic, but IF that chip is capable of coding and driving SPDIF, it probably needs to be instructed to do so. Whatever chip gives you the menu system is probably a microcontroller which sends those kind of instructions to the ST chip at power-up. I hope I'm wrong... Cheers,

30th April 2003, 03:08 AM	#3
alvaius diyAudio Member Join Date: Feb 2002 Location: Toronto	Pin 57 is the SPDIF output pin, but there is no guarentee it is enabled, or what will be there. It could be compressed or not compressed as well. The 5518 has a built in processor and would just pull the program code from flash in all likelihood. Good Luck!