Clocking Resources - 2022.2 English

Vivado Design Suite User Guide: Dynamic Function eXchange (UG909)

Document ID
UG909
Release Date
2022-11-21
Version
2022.2 English

In Versal, the majority of clocking resources appear in the bottom horizontal super row (HSR). Since most of the clocking resources are located at bottom row of the device, users can have an island for reconfigurable Pblock in the bottom HSR if they need internal clocking resources inside the reconfigurable partition. For example, in the following figure rp1 Pblock is split into two rectangles, one for the placement of logic and other for the placement of clocking resources.

Figure 1. Clocking Resources

Clock Routing expansion automatically picks up required clock tiles for routing even though clocking resources are in separate island of Pblock.

Figure 2. Clock Routing Expansion
Important: It is recommended to draw contiguous Pblocks like rp2. This avoids static region’s island-like placement and ease the timing closure.