Lookup Operation - 2.2 English

HBM/DDR4 Binary CAM Search LogiCORE IP Product Guide (PG336)

Document ID
PG336
Release Date
2021-08-12
Version
2.2 English

The CAM Database stores the (key, response) entries and performs matching by processing a Lookup Request. If the lookup key matches the key of any entry, there is a match and the response is output. The API software ensures that two entries using identical keys cannot be inserted. If the lookup key does not match the key of any entry, a no match indication is normally output. The CAM supports an optional default response. If the default response is used, the CAM outputs the default response instead of outputting the no match indication. The default response entry is a special entry without any key part. The key part is not necessary because this entry always matches if no other entry is matched.