DDR LVDS over HSMC on Stratix IV GX Development Kit

[Altera_Forum]

Can the HSMC interfaces on the Stratix IV GX development board support 500 MHz (1000 GBPS) DDR LVDS?

[Altera_Forum]

--- Quote Start ---  Can the HSMC interfaces on the Stratix IV GX development board support 500 MHz (1000 GBPS) DDR LVDS?  --- Quote End ---    I don't see why not.   I have been using the transceivers at 5Gbps and higher. Assuming the LVDS layout is good, you should be fine.  I've tested the Stratix II LVDS at 1Gbps. I would expect the Stratix IV to work fine.  What are you interfacing to?  Cheers, Dave

[Altera_Forum]

Dave, 

 Thanks for your reply.  Yes, it's the LVDS routing of the Stratix IV GX development board that I'm concerned with. I would like to know if it is good enough for 1 Gbps. I'm interfacing to an Analog Devices AD9434 12-bit 500 MSPS ADC. It supports both SDR and DDR transmission. I'll use the SDR mode at first but would like to try the DDR mode, as well. http://www.analog.com/en/analog-to-digital-converters/ad-converters/ad9434/products/product.html  Andy

[Altera_Forum]

Hi Andy, 

  --- Quote Start ---   Yes, it's the LVDS routing of the Stratix IV GX development board that I'm concerned with. I would like to know if it is good enough for 1 Gbps.   --- Quote End ---    It should be. Do you have the board? If you don't, I could probably test the boards I have. But I wouldn't get a chance to until next week sometime. Unless of course you have a test design, that has a nice testbench, so that I can see the design, then I'll download it :)    --- Quote Start ---   I'm interfacing to an Analog Devices AD9434 12-bit 500 MSPS ADC. It supports both SDR and DDR transmission. I'll use the SDR mode at first but would like to try the DDR mode, as well. http://www.analog.com/en/analog-to-digital-converters/ad-converters/ad9434/products/product.html  Andy  --- Quote End ---    Does your design provide a frame clock for the LVDS demux logic?  Read these if you don't know what I'm talking about:  http://www.ovro.caltech.edu/~dwh/carma_board/at84ad001b_tests.pdf http://www.ovro.caltech.edu/~dwh/carma_board/digitizer_tests.pdf  Cheers, Dave