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HSP45256JC-25 Datasheet(PDF) 8 Page - Intersil Corporation |
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HSP45256JC-25 Datasheet(HTML) 8 Page - Intersil Corporation |
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8 / 23 page  8 The function performed by one correlation cell is: (Di,n XNOR Ri,n) AND Mi,n where: Di,n = Bit i of data register n Ri,n = Bit i of reference register n Mi,n = Bit i of mask register n The reference and mask bits are loaded sequentially, N bits at a time, where N depends on the current configuration (see Tables 2 and 9). New reference data is loaded on the rising edge of RLOAD and new mask data is loaded on the rising edge of CLOAD. The mask and reference bits are stored internally in Shift Registers, so that the mask and reference information that was loaded most recently will be used to process the newest data. When new information is loaded in, the previous contents of the mask and reference bits are shifted over by one sample, and the oldest information is lost. There are no registers in the multiplexer array (see Block Diagram), so the data on DOUT0-7 corresponds to the data in the last element of the correlation array. When monitoring DOUT0-7, AUXOUT0-8, and REFOUT0-7, only those bits listed in Table 9 are valid. FIGURE 3. CORRELATION CELL BLOCK DIAGRAM FIGURE 4. CORRELATION CELL TIMING DIAGRAM R E G > RLOAD DREF R E G > DCONT CLOAD DREFOUT DCONTOUT R E G > TXFR R E G > CLK DATA DATAOUT COROUT A B R E G > (MASK) RLOAD DREF DCONT CLOAD TXFR CLK DATA DATA CONTROL A B DR8 DR7 DR6 DR5 DR4 DR3 DR2 DR1 DR0 DR7 DR6 DR5 DR4 DR3 DR2 DR1 DR0 DR7 DR6 DR5 DR4 DR3 DR2 DR1 DR0 DR-1 D7 D6 D5 D4 D3 D2 D1 D0 D-1 HSP45256 |
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