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New ContributorClock Pins for Arria 10 SoC Development Kit
Hello,
I am looking at the pinout pdf file for the Arria 10 SoC Development Kit, and so far it just looks like an alien language.
I am just looking for a pin that I can use in my FPGA Verilog design that has more than 135 MHz.
I am using the kit with the fmcdaq2 board and in the example project there is 333.333MHz clock (tx_ref_clk) that is connected to PIN_N29 (and there is also "tx_ref_clk(n)" connected to PIN_N28 for some reason), but even though I use this clock, my design doesn't work properly. I believe this clock signal changes and is not actually continuously 333.333MHz, so that is why it is not working. Is there any pin that I can use in my design that has a clock of at least 135 Mhz? (I can use Altera IOPLL IP to choose my desired clock, so I would appreciate it if the frequency is much higher)
9 Replies
sstrellSuper Contributor
What you reference is a differential clock on those 2 clock pins, so that might not be what you want.
I'm presuming it's this kit but the pin numbers you mention don't match up with your description of them according to the documentation: https://www.intel.com/content/www/us/en/programmable/products/boards_and_kits/dev-kits/altera/arria-10-soc-development-kit.html
Is that the kit you're using?
GSagl1Yes, this is what I am using. Perhaps the pin I am referring to is connecting to the fmcdaq2 board I have, and it is providing that signal.
I have been looking at the pinout file and the user guide of this development kit however the user guide isn't exactly as clear as it could have been, and the pinout is some sort of an alien language. Can you help me out and give me some pin that actually has at least 135 MHz frequency? It's fine if it's 300, 500, 750MHz or whatever, as long as it s more than 135MHz.
EngWei_O_IntelFrequent Contributor
Hi there
If you check on "The Clock Control" section in https://www.intel.com/content/www/us/en/programmable/documentation/iga1434736665480.html#iga1439246083721, you are able to set the freq through the apps.
You can check on the schematic for the connection of Si5338 to the FPGA here:
Thanks.
Eng Wei
