Name Conflicts - Name Conflicts - 2026.1 English - UG903

If two auto-generated clocks conflict in your design, Vivado IDE adds unique suffixes to differentiate them, such as:

• usrclk
• usrclk_1
• usrclk_2

To control the clock name:

• Choose unique, relevant net names in RTL
• Use create_generated_clock to set the generated clock name explicitly.