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Author: Admin | 2025-04-28
And Gnd around the core area. The stripes take connection of Vdd and Gnd inside the Core area. The special routes provide Vdd and Gnd connection to each cell in the Core area. In the Figure 2, the IO ring is also shown. The blocks at the four corners are called as Corner cells. Different orientations of the corner cells are available in the IO library. Figure 2: A simplified floor plan.Pre-CTS FlowFirst step that is to be performed in this flow is to check for scan path functionality. Generally the scan cells are defined in the timing libraries but in this stage scan cells can also be defined. The scan cells and the scan chains are inserted in netlist in the synthesis stage. If one do not want to retain the scan chain order in the design, can change the order of the scan flip-flops which are connected along the scan chain for any scan groups. This process changes the connection constraints of scan cells but not the placement constraints. The reordering of scan chains can be performed in two waysNative Scan Reordering Approach – This method is applicable when the designer does not have scandef file. In this approach, the designers have to specify regarding the scan cells, scan chains and scan paths.Scandef Method – This approach reorders the scan chains with the help of scandef file. This method is preferred by Cadence tool as it is easier to execute.Once the scan cells are configured, the design can
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