M7010R View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'M7010R' PDF : 67 Pages View PDF
M7010R
136-bit Logical SEARCH
The logical, 136-bit SEARCH operation is shown
in Figure 29. The entire table of 136-bit entries is
compared to a 136-bit word K (presented on the
DQ Bus in both Cycles A and B of the command)
using the GMR and the local mask bits. The GMR
is the 136-bit word specified by the even and odd
global mask pair selected by GMR Index in the
command’s Cycle A. The 136-bit word K (present-
ed on the DQ Bus in both Cycles A and B of the
command) is also stored in both even and odd
comparand register pairs selected by the Com-
parand Register Index in the command’s Cycle B.
The two comparand registers can subsequently
be used by the LEARN command with the even-
numbered comparand register stored in an even-
numbered location, and the odd-numbered com-
parand register stored in an adjacent, odd-num-
bered location. The word K (presented on the DQ
Bus in Cycles A and B of the command) is com-
pared with each entry in the table starting at loca-
tion “0.” The first matching entry’s location,
address “L,” is the winning address that is driven
as part of the SRAM address on the SADR[21:0]
lines.
Note: The matching address is always going to be
an even-numbered address for a 136-bit
SEARCH.
Figure 29. x136 Table with One Device
135
0
67
0
Comparand Register (even)
A
Comparand Register (odd)
B
GMR
K
Even
A
Location 135
address
0
2
4
6
L
Odd
B
0
(First matching entry)
16382
CFG = 01010101
(136-bit Configuration)
AI07042
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