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Altera_Forum
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17 years ago

Implementing CAM (Content Addressable Memory) on Cyclone III

Hi everyone, I'm new at the Altera Forum and I'm also a newbie in using Altera FPGAs. In order to design a packet filter for a DVB application, I'm looking for a solution to implement a CA...
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Altera_Forum
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9 years ago

Hi,

I am new to this and I have a query. Is this code valid for cyclone 4 too? I am not having altsyncram option in here. I have a M9k block and need a CAM of 128 bytes memory with 8 bits of data and 8 bits of address.

Thanks

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An M9K can do a 32x8 CAM, so you'll basically change the parameters in M9K_CAM.vhd to do a 32x16 CAM(it needs to be a multiple of these dimensions), and then just tie off the extra ports. I built this quickly but believe it is correct. There is a presentation that is very old on this topic(it was done as Stratix was rolling out). I have a document that refers to it, so together you can use them for understanding. (Not the most professional delivery, but hey, if it works.) You can also just use the M9K_CAM.vhd and M9K.vhd files and just play with it yourself.

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