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Honored Contributor
Honored ContributorTVP5146 initialization on Video Input Daughtercard
Hi all,
Altera's Video Input Daughtercard (as included with the Cyclone II DSP dev kits) uses 2 of the TI TVP5146 TV decoder ICs. The only example design I can find that uses this card is the example that ships with the Cyclone II dev kit, and it isn't documented at all with regard to the I2C interface to the TVP5146. I'd like to use this daughtercard with a Stratix II DSP dev kit, but I will need to build my own design in Nios II to interface to the TVP5146. I'd like the composite input to be sent out as BT.656, much as it is in the example design, but I can't decode what initialization commands are sent to the TVP5146. I've tried a mySupport request and was only told to read the TVP5146 manual. I've tried this and can't get it to work. Does anyone have a suggested initialization sequence for the TVP5146, or can anyone tell what the example design is sending? Thanks in advance.:)2 Replies
Altera_ForumOk if you get the TVP5146 chip datasheet, it has all the I2C addressing documented in it
It is availiable at http://focus.ti.com/lit/ds/symlink/tvp5146.pdf at the moment i'm trying to hook the same card up to a Cyclone III kit using the HSMC E-Gasket to santa-cruz converter. However the only problem i seem to be having is that i can't find information about matching the imedances of the 3.3v card with that of the FPGA. You possibly need to put a series impedance in place to match the line and prevent overvoltage. If you come across anything like that on your stratix II adventure let me know :P- Altera_Forum
I've a similar problem - couldn't find any samples\information about connecting DC-VIDEO-TVP5146N to DK-NIOS-2S60N (StratixII) via i2c.
Does somebody connect and initialize DC-VIDEO-TVP5146N within DK-NIOS-2S60N board ? Thank you
