When multiple subsystem instances are targeted for I/O in the same bank, IDELAYCTRL needs
to be shared. The gtx_clock and gtx_clk_out of the
instance configured to Include Shared Logic in Core need to be connected to inputs of
the instance configured to Include Shared Logic in IP Example Design . This is shown in
the following figure. The connections shown in blue are specific to connections for
sharing logic. The rest are regular connections.
Figure 1. Connections to Enable Sharing Logic among Two Instances
