Importance

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Abstract

A plurality of memory devices of mixed type (e.g., DRAMs, SRAMs, MRAMs, and NAND-, NOR-, AND-type Flash memories) are serially interconnected. Each device has device type information on its device type. A specific device type (DT) and a device identifier (ID) contained in a serial input are fed to one device of the serial interconnection configuration. The device determines whether the fed DT matches the DT of the device. In a case of match, a calculator included in the device performs calculation to generate an ID for another device and the fed ID is latched in a register of the device. The generated ID is transferred to another device of the serial interconnection. In a case of no match, the ID generation is skipped and no ID is generated for another device. Such a device type match determination and ID generation or skip are performed in all devices of the serial interconnection.

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First Claim