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OR2C04A датащи(PDF) 33 Page - List of Unclassifed Manufacturers |
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OR2C04A датащи(HTML) 33 Page - List of Unclassifed Manufacturers |
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33 / 192 page ![]() Data Sheet June 1999 ORCA Series 2 FPGAs Lucent Technologies Inc. 33 Interquad Routing (continued) In the hIQ block in Figure 29, the XH lines from one quadrant connect through a CIP to its counterpart in the opposite quadrant, creating a path that spans the PLC array. Since a passive CIP is used to connect the two XH lines, a 3-state signal can be routed on the two XH lines in the opposite quadrants, and then they can be connected through this CIP. In the hIQ block, the 20 hIQ lines span the array in a horizontal direction. The 20 hIQ lines consist of four groups of five lines each. To effectively route nibble- wide buses, each of these sets of five lines can connect to only one of the bits of the nibble for both the XH and XL. For example, hIQ0 lines can only connect to the XH0 and XL0 lines, and the hIQ1 lines can connect only to the XH1 and XL1 lines, etc. Buffers are provided for routing signals from the XH and XL lines onto the hIQ lines and from the hIQ lines onto the XH and XL lines. Therefore, a connection from one quadrant to another can be made using only two XH lines (one in each quadrant) and one interquad line. 5-4537(F).r3 Figure 29. hIQ Block Detail hIQ3[4] hIQ3[3] hIQ3[2] hIQ3[1] hIQ3[0] hIQ2[4] hIQ2[3] hIQ2[2] hIQ2[1] hIQ2[0] hIQ1[4] hIQ1[3] hIQ1[2] hIQ1[1] hIQ1[0] hIQ0[4] hIQ0[3] hIQ0[2] hIQ0[1] hIQ0[0] hIQ3[4] hIQ3[3] hIQ3[2] hIQ3[1] hIQ3[0] hIQ2[4] hIQ2[3] hIQ2[2] hIQ2[1] hIQ2[0] hIQ1[4] hIQ1[3] hIQ1[2] hIQ1[1] hIQ1[0] hIQ0[4] hIQ0[3] hIQ0[2] hIQ0[1] hIQ0[0] |
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