Synchronous content addressable memory
First Claim
1. A method of reading data from a synchronous content addressable memory (CAM) device, comprising the steps of:
- instructing the CAM device to compare comparand data with data stored in a plurality of first CAM cells;
comparing the comparand data with the data stored in each of the plurality of first CAM cells;
sensing data stored in a second CAM cell; and
outputting the sensed data from the CAM device, wherein the instructing, comparing, sensing, and outputting steps all occur in one clock cycle.
11 Assignments
0 Petitions
Accused Products
Abstract
A CAM device to perform in one clock cycle: (1) receive comparand data from a comparand bus; (2) receive an instruction; (3) perform the comparison of the comparand data with a first group of CAM cells; (4) generate a match address for a location in the CAM array that stores data matching the comparand data; (5) access data stored in a second group of the CAM cells in the CAM array, wherein the second group of CAM cells may store data associated with the matched location; and (6) output to an output bus the match address, the data stored in the second group of CAM cells, and/or status information corresponding to the matched address or the second group of CAM cells.
-
Citations
19 Claims
-
1. A method of reading data from a synchronous content addressable memory (CAM) device, comprising the steps of:
-
instructing the CAM device to compare comparand data with data stored in a plurality of first CAM cells;
comparing the comparand data with the data stored in each of the plurality of first CAM cells;
sensing data stored in a second CAM cell; and
outputting the sensed data from the CAM device, wherein the instructing, comparing, sensing, and outputting steps all occur in one clock cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A synchronous content addressable memory (CAM) device comprising:
-
an array of CAM cells;
circuitry to compare first comparand data with contents of the array of CAM cells during a first clock cycle;
circuitry to sense data stored in a selected row of CAM cells within the array of CAM cells during the first clock cycle; and
circuitry to output the sensed data from the CAM device during the first clock cycle. - View Dependent Claims (13, 14, 15, 16, 17)
-
-
18. A synchronous content addressable memory (CAM) device comprising:
-
an array of CAM cells;
means for comparing first comparand data with contents of the array of CAM cells during a first clock cycle;
means for sensing data stored in a selected row of CAM cells within the array of CAM cells during the first clock cycle; and
means for outputting the sensed data from the CAM device during the first clock cycle. - View Dependent Claims (19)
-
Specification