ID:21172 <name> port of the single-ended output buffer <name> is not connected to the <name> port of the pseudo-differential output node <name>

CAUSE: You used a pseudo-differential output node. However, the output enable port of the single-ended output buffer is not connected to the pseudo-differential output node.

ACTION: Fix the design such that the output enable port of the single-ended output buffer is connected to the pseudo-differential output node.