Input Port CALCLK Not Driven by the Same Source when Compiling Serial Digital Interface Design

Description

Fitter error occurs when compiling the serial digital interface (SDI) I transmitter only with the Cyclone V device. The error message "Input Port CALCLK must be driven by the same source" is displayed.

This issue affects the Cyclone V device in 12.1.

Resolution

There is no workaround for this issue.

This issue is fixed in 12.1sp1dp1.