The U and V texture addressing states, set through the D3DRENDERSTATE_TEXTUREADDRESS, D3DRENDERSTATE_TEXTUREADDRESSU, and D3DRENDERSTATE_TEXTUREADDRESSV render states, have been superseded by the texture addressing features offered by the IDirect3DDevice3 interface. However, applications that use the IDirect3DDevice2 interface can still work with texture addressing modes as before.
Both approaches to texture addressing modes are discussed in Setting and Retrieving Texture Addressing Modes.