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A54SX08P-1TQG208PP Datasheet(PDF) 7 Page - Actel Corporation |
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A54SX08P-1TQG208PP Datasheet(HTML) 7 Page - Actel Corporation |
7 / 64 page SX Family FPGAs v3.2 1-3 Chip Architecture The SX family chip architecture provides a unique approach to module organization and chip routing that delivers the best register/logic mix for a wide variety of new and emerging applications. Module Organization Actel has arranged all C-cell and R-cell logic modules into horizontal banks called clusters. There are two types of clusters: Type 1 contains two C-cells and one R-cell, while Type 2 contains one C-cell and two R-cells. To increase design efficiency and device performance, Actel has further organized these modules into SuperClusters (Figure 1-4). SuperCluster 1 is a two-wide grouping of Type 1 clusters. SuperCluster 2 is a two-wide group containing one Type 1 cluster and one Type 2 cluster. SX devices feature more SuperCluster 1 modules than SuperCluster 2 modules because designers typically require significantly more combinatorial logic than flip- flops. Figure 1-3 • C-Cell Figure 1-4 • Cluster Organization D0 D1 D2 D3 DB A0 B0 A1 B1 Sa Sb Y Type 1 SuperCluster Type 2 SuperCluster Cluster 1 Cluster 2 Cluster 2 Cluster 1 R-Cell C-Cell D0 D1 D2 D3 DB A0 B0 A1 B1 Sa Sb Y Direct Connect Input CLKA, CLKB, Internal Logic HCLK CKS CKP CLRB PSETB Y DQ Routed Data Input S0 S1 |
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