Do I need to select texture when use Normalmap?

Does unity have a shader which has only normalmap?

There is a cube which has 2 materials. I want to separate Color one(Diffuse IBL) from Normalmap one(Bumped Diffuse IBL?) because their mapping size are different. So I wanna separate but I don't wanna select texture of Diffuse Color.

I want to use the only divided a Shader "Duffuse Color" and "Normalmap".

My apology for the broken English.