Micron Technology, Inc.
BIT AND SIGNAL LEVEL MAPPING

Abstract:

Methods, systems, and devices for bit and signal level mapping are described to enable a memory device to transmit or receive a multi-symbol signal that includes more than two (2) physical levels. Some cyclic redundancy check (CRC) calculations may generate one or more bits of CRC output per symbol of an associated signal and the output may be transmitted via a multi-symbol signal by converting one or more CRC output bit to a physical level of the signal. The conversion, or mapping, process may be performed such that the physical levels of the signal avoid a transition between a highest physical level and lowest physical level. For example, a modulation scheme or mapping process may be configured to map different values of CRC output bits to different physical levels, where the different physical levels are separated by one other physical level associated with the signal or the modulation scheme.