Circuits, systems and methods for dynamic reference voltage calibration

A system, comprising:

• a master device;
• a plurality of memory devices coupled to the master device by an interconnect and a storage location to store information indicating system configuration,
• wherein the master device obtains a plurality of values representing reference voltage values,
• wherein the master device selects a first value in the plurality of values representing reference voltage values to generate an internal reference voltage value when reading data from a selected memory device in the plurality of memory devices and,
• wherein the master device selects the first value in response to reading the information stored in the storage location.

A method, comprising:

• obtaining a plurality of values representing reference voltages for a plurality of memory devices;
• selecting a first value in the plurality of values representing reference voltages;
• obtaining information indicating a system configuration from a serial presence detect device and selecting the first value in response to the information;
• adjusting a reference voltage value in response to the first value to an adjusted reference voltage value;
• and
• transferring data to a selected memory device in the plurality of memory devices using the adjusted reference voltage value.

A system, comprising:

• a master device;
• and
• a plurality of memory devices coupled to the master device by an interconnect,
• wherein the master device obtains a plurality of values representing reference voltage values,
• wherein the master device selects a first value in the plurality of values representing reference voltage values to generate an external reference voltage value when writing data to a selected memory device in the plurality of memory devices and,
• wherein the external voltage value is external to the master device and the plurality of memory devices.