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5988 Discussions

HD-SDI and 1080p30 support

Altera_Forum
Honored Contributor II
1,043 Views

Hello! 

I'm Using Altera Serial Digital Interface MegaCore to transmit 1,485Gbit video at 1920x1080 resolution...  

When i'm use 1080i bitstream, all works ok! 

But when i've change it to progressive frame, my HD-SDI Adapter doesn't see Video signal :( 

 

When i've read Altera Application Note 641 and browse Source code of it, i've found this strange line at file sdi_pattern_gen.v:  

" 1080p only for 3G modes." 

 

What does it means?  

According to SMPTE 292M and 274M: HD-SDI support 1080p at 30 Hz.... 

And according to SDI User's Guide, This core support all resolutions of HD-SDI... 

 

But why i can't implement 1080p30 resolution at 1,485 Gbit HD-SDI channel?  

 

I'm using single channel, sigle standart SDI output with 74,25MHz clocks at tx_serial_refclk and tx_pclk... 

My FPGA is Cyclone IV GX (EP4CGX150DF31) 

 

P.S. Sorry for my bad English, but i don't know where else i can ask for solution!
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3 Replies
Altera_Forum
Honored Contributor II
258 Views

I would offer You to open a service request at altera.com support page.

Altera_Forum
Honored Contributor II
258 Views

Unfortunately, i don't have corporate email for Altera mySupport :( 

But thank you for idea, i'll try 

 

If someone have an sucessful experience of implementation 1080p at 1,485 Gbit HD-SDI via Altera SDI MegaCore, please, let me know here 

 

Thanks
Altera_Forum
Honored Contributor II
258 Views

I am pretty sure it should work. Are the timing requirements met?

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