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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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M7010R 데이터시트(PDF) 45 Page - STMicroelectronics |
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M7010R 데이터시트(HTML) 45 Page - STMicroelectronics |
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45 / 67 page  45/67 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 0 4 8 12 16380 (272-bit Configuration) Location address L 271 0 KA B C D GMR 0 1 23 271 0 AI07044 (First matching entry) |
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