M7010R datasheet(45/67 Pages) STMICROELECTRONICS

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M7010R

272-bit Logical SEARCH

The logical 272-bit SEARCH operation is shown in

Figure 32. The entire table of 272-bit entries is

compared to a 272-bit word K (presented on the

DQ Bus in both Cycles A, B, C, and D of the com-

mand) using the GMR and the local mask bits. The

GMR is the 272-bit word specified by the two pairs

of GMRs selected by GMR Indexes in the com-

mand’s Cycles A and C. The 272-bit word K (pre-

sented on the DQ Bus in Cycles A, B, C, and D of

the command) is compared with each entry in the

tablestartingat location “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

location “0” in a four-entry page for a 272-bit

SEARCH (two LSBs of the matching index will be

“00”).

Figure 32. x272 Table with One Device

CFG = 10101010

16380

(272-bit Configuration)

Location

address

271

GMR

271

AI07044

(First matching entry)

M7010R bảng dữ liệu(PDF) 45 Page - STMicroelectronics