pxb4360f Infineon Technologies Corporation, pxb4360f Datasheet - Page 48

• Manufacturer Part Number: pxb4360f
• Description: Content Addressable Memory Element Came
• Manufacturer: Infineon Technologies Corporation

determines which chip performs the operations and may send back the results to ALP.
Therefore, the chip not selected chip must also wait for the end of the current request before a
new request may be started. In search cycles, both CAME chips start searching in parallel. Only
one chip will respond to ALP, determined by the search result. Only for test request #6 must an
extra bit, TESTMODE(9), be spent in the instruction word for selection between master and
slave.
With two cascaded CAME chips, each CAME first searches alone. When the match state of
master and slave is known, the master reports his local result to the slave. It is only necessary
to report “mismatch” or “not mismatch” conditions. The same is done by the slave. Both chips
determine their reaction and the overall status according to
combinations of local master and slave search results. The fields of this table contain the overall
status of the result for which device returns the result to ALP and which stays inactive.
For example, if both chips detect a single match, the slave knows about its own state and the
detection of at least an additional match in the master (Master.CO(2..0) = Slave.CI(2..0)) and
knows that a global multimatch results. As the slave in this case, it must not respond to ALP. The
master also detects a global multimatch the same way (Slave.CO(2..0) = Master.CI(2..0)) and
responds to ALP.
Data Sheet
Search - Requests #1..3
Write - Request #4
Read - Request #5
Test - Request #6
Refer to table 4
0
0
TESTMODE(9) = 0
LCI
LCI
8191
8191
6-48
8192
8192
TESTMODE(9) = 1
LCI
LCI
, which includes all
16383
16383
07.2000