Embodiments of the invention include features in the semiconductor memory
device that are configured to receive command signals from a memory
controller and selectively output at least a portion of the received
command signals back to the memory controller for verification.
Embodiments of the invention also provide methods for verifying the
proper communication of command signals from a memory controller to a
semiconductor memory device. Embodiments of the invention also provide
systems and methods for testing memory cells in a semiconductor memory
device.