Cyclone® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683375
Date 10/18/2023
Document Table of Contents Dual-Regional Clock Region

To form a dual-regional clock region, a single source (a clock pin or PLL output) generates a dual-regional clock by driving two RCLK networks (one from each quadrant). This technique allows destinations across two adjacent device quadrants to use the same low-skew clock. The routing of this signal on an entire side has approximately the same delay as a RCLK region. Internal logic can also drive a dual-regional clock network.

Dual-regional clock region is only supported for quadrant 3 and quadrant 4 in Cyclone® V SE, SX, and ST devices.

Figure 42. Dual-Regional Clock Region for Cyclone® V Devices This figure represents the top view of the silicon die that corresponds to a reverse view of the device package.