Reduced shifter memory system

A method of operating a memory device, comprising:

• shifting, with a parity shifter, multiple input signals, including one or more command signals and one or more other signals, to generate multiple shifted input signals that are shifted by a specified number of clock cycles, wherein the shifting, by the parity shifter for a given time segment of input, performs shifting for each of the one or more command signals no more than once;
• receiving, from the parity shifter, the multiple shifted input signals;
• providing, to a command decoder, at least some of the one or more shifted command signals;
• decoding, with the command decoder, the provided one or more shifted command signals into one or more shifted and decoded command signals;
• outputting, from the command decoder, the one or more shifted and decoded command signals;
• and
• providing the one or more shifted command signals to the command decoder when parity checking is being performed;
• and
• providing the one or more command signals that have not been shifted by the parity shifter to the command decoder when parity checking is not being performed.

A system comprising:

• parity shifting means for receiving multiple input signals, including one or more command signals and one or more other signals, and providing multiple shifted input signals that are shifted by a specified number of clock cycles, wherein the parity shifter shifts each of the one or more command signals no more than once for a unit of time;
• command decoding means for:
• receiving at least some of the one or more shifted command signals;
• decoding the received one or more shifted command signals into one or more shifted and decoded command signals;
• and
• providing the one or more shifted and decoded command signals;
• and
• providing means for:
• providing the one or more shifted command signals to the command decoding means when parity checking is being performed;
• and
• providing the one or more command signals that have not been shifted by the parity shifting means to the command decoding means when parity checking is not being performed.