Error CMP426: Invalid connection to ngmux instance <instance name>. The CLK1 originates from the GLC port of PLL; CLK0 must originate from the GLA output of same PLL.

NGMUX has hardwired connections to the GLC and GLA of a CCC. If the CLK1 input originates from a GLC output, the CLK0 is expected to originate from the GLA of the same CCC.

Action

Connect the GLA output of the PLL to the CLK0 input of the NGMUX.