Signal conductor routing configurations and techniques

A substrate for an integrated circuit having at least three metal layers disposed parallel to one another, comprising:

• a first arrangement of signals, comprising:
• a first signal provided to a first trace of a first metal layer and a second trace of a third metal layer disposed above the first metal layer, wherein the second trace of the third metal layer is vertically aligned with the first trace of the first metal layer;
• and
• a second signal provided to third and fourth traces of a second metal layer disposed between the first and third metal layers;
• and
• a second arrangement of signals rotated with respect to the first arrangement, wherein the second arrangement comprises:
• the second signal provided to a fifth trace of the first metal layer and a sixth trace of the third metal layer, wherein the sixth trace of the third metal layer is vertically aligned with the fifth trace of the first metal layer;
• and
• the first signal provided to seventh and eighth traces of the second metal layer.

A substrate for an integrated circuit, the substrate comprising:

• means for providing a first signal to a first trace extending along a first length of a first metal layer and to a second trace extending along a first length of a third metal layer disposed above the first metal layer;
• means for providing a second signal to third and fourth traces extending along a first length of a second metal layer disposed between the first and third metal layers, wherein the first length of the second metal layer is vertically aligned with the first length of the first and third metal layers;
• means for coupling the first trace and the second trace to fifth and sixth traces extending along a second length of the second metal layer;
• means for coupling the third trace to a seventh trace extending along a second length of the third metal layer;
• and
• means for coupling the fourth trace to an eighth trace extending along a second length of the first metal layer, wherein the second length of the first metal layer, the second length of the second metal layer and the second length of the third metal layer are vertically aligned with each other.