Memory System with Calibrated Data Communication

A memory controller, comprising:

• an interface circuit for coupling the memory controller to one or more memory devices via a bus;
• control logic, coupled to the interface circuit,
• to address an individual memory device of the one or more memory devices;
• and
• to set a memory device-specific value in a reference voltage register in the individual memory device;
• and
• the interface circuit to transmit a data signal to the individual memory device;
• wherein the memory device-specific value stored in the reference voltage register of the individual memory device controls a reference voltage used by the individual memory device when receiving the data signal transmitted by the memory controller to the individual memory device.

A method of slave-specific calibration, performed by a memory controller coupled by a bus to one or more memory devices via a bus, the method comprising:

• addressing an individual memory device of the one or more memory devices;
• setting a memory device-specific value in a reference voltage register in the individual memory device;
• and
• transmitting a data signal to the individual memory device;
• wherein the memory device-specific value stored in the reference voltage register of the individual memory device controls a reference voltage used by the individual memory device when receiving the data signal transmitted by the memory controller to the individual memory device.