Patent ID: 8438515

Claim:
A first memory device, comprising: a first ball grid array (BGA) that electrically couples the memory device to a set of signal lines in a memory module, wherein each ball in the BGA transfers an individual signal in the set of signals between the memory device and the memory module, and wherein at least a first signal routed through a first ball in the first ball grid array and a second signal routed through a second ball in the first ball grid array may be a mirrored signal pair, wherein being the mirrored signal pair causes the first signal to be routed through the second ball and the second signal to be routed through the first ball, wherein a set of outer connections, corresponding to interchangeable signals are to couple the first memory device to a substrate, wherein the interchangeable signals are arranged in first and second outer columns, and wherein the second outer column is located on a side of the integrated circuit that is opposite to a side of the integrated circuit on which the first outer column is located.