Visible Variable Signal if define within Entity -visible within the whole Entity if define within architecture-visible Within the whole architecture if define within package -visible within the whole package Make sure that you must have the correct Signal or variable declaration„ Visible „ Variable „ Signal : if define within Entity - visible within the whole Entity if define within Architecture - visible within the whole Architecture if define within Package - visible within the whole Package „ Make sure that you must have the correct Signal or Variable declaration