Local internal discovery and configuration of individually selected and jointly selected devices

A method for operating a memory controller having a command interface shared between at least two memory devices, the method comprising:

• obtaining, by address assignment logic, a device address for assigning to a first configurable width device of the at least two memory devices;
• generating, by the address assignment logic, a device address setting command for setting the device address of the first configurable width device, the device address setting command including a mask value and a data pattern, wherein the data pattern and the mask value are set such that a logic operation performed on the data pattern and the mask value maps to the device address;
• and
• transmitting the mask value to the configurable width device via the command interface and transmitting the data pattern to the first configurable width device via a data interface;
• generating a memory operation command including the device address of the first configurable width device;
• and
• sending the memory operation command on the command interface to cause the first configurable width device to perform a memory operation associated with the memory operation command.

A memory controller coupled to at least two memory devices via a command interface, comprising:

• device addressing means for obtaining a device address for assigning to a first configurable width device of the at least two memory devices;
• device address setting command generating means for generating a device address setting command for setting the device address of the first configurable width device, the device address setting command including a mask value and a data pattern, wherein the data pattern and the mask value are set such that a logic operation performed on the data pattern and the mask value maps to the device address;
• and
• device address setting command transmitting means for transmitting the mask value to the configurable width device via a command interface and transmitting the data pattern to the first configurable width device via a data interface memory command generating means for generating a memory operation command including the device address of the first configurable width device;
• and
• memory operation command setting means for sending the memory operation command on the command interface to cause the first configurable width device to perform a memory operation associated with the memory operation command.