The gen_clken pin is an active-High, synchronous clock-enable pertaining to
the Video Timing Controller generator (output) interface. This clock enable
allows halting the generator independently from the detector. The internal generator
clock enable is a logical "AND" between the clken and
get_clken inputs. For example, to enable the detector while halting
the generator, drive clken to 1,
det_clken to 1, and gen_clken to
0. The internal logic that controls the generator sub-core clock
enable is shown in the figure.
Figure 1. Generator Internal Clock Enable Logic
