Error (15629): Atom "comb~6" is dependent on unconnected input ports

Description

You may see the error when instantiating the Altera® PLL Reconfiguration IP and enabling physical synthesis in the Quartus® II software.

Resolution

Modify the altera_pll_reconfig_core.v file as shown below:

1. Find the generic_lcell_comb module definition
2. Add (* altera_attribute = "-name ADV_NETLIST_OPT_ALLOWED \"NEVER ALLOW\"" *) before the module keyword.

This problem is fixed in Quartus® Software version 13.1.

Related Articles

• Error (15629): Atom comb~0 is dependent on unconnected input ports
• Error ID 15629: Atom lcell_inst is dependent on unconnected input ports