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Hello,
I am quite new to using higher level FPGA elements since in college we only used small scale designs with at most 16-bit wide busses and predefined data paths so forgive me if this question is noobish.
I have been given a list of MAC addresses that I need to store and then compare with incoming ethernet frames in a whitelist fashion. I am using the Triple Speed Ethernet IP.
My initial idea was to use a CAM but I have come to understand that modern FPGAs don't have them. I am now thinking to store the addresses in BRAM but now comes the question of how to compare them. Is it possible to have a 48-bit wide comparator or even a 96-bit wide comparator to compare src and dest MACs in a single shot?
Thank you in advance for the help
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Yes, if you want to make comparison. You can make use of the comparator, all the IP is in the IP catalog.
What I would suggest is you use modelsim to make sure the behavior is the one that you want.
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Yes, if you want to make comparison. You can make use of the comparator, all the IP is in the IP catalog.
What I would suggest is you use modelsim to make sure the behavior is the one that you want.
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Hi yes, this helped me out. I able to make a comparator with the bus widths I needed through the IP generator.
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