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| Associative memory organization |
(i) Input register:
This is a buffer register. It holds the data to be written into the associative
memory or the information to be searched for.
(ii) Mask register:
The principal use of this register is to mask off some portions of the input
register to form a key. Typically, the input information might contain several
fields such as last name, account number, annual salary and soon.
(iii) Output register:
The register functions as the destination for data being retrieved from the
associative store.
(iv) Associative array:
This is a collection of basic memory cells organized in the form of an array.
(v) Match logic:
This is a combinational circuit whose purpose is to detect is there is a match
between the given key K and the associative value stored in the cellular array.
(vi) Match register: The
purpose of this register is to latch the result generated by the match
logic.
(vii) Selection logic:
Typically the hardware computes the address of the matching word, retrieves it
from the associative array and routes it to the output register.
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