Apparatus and method for producing IDs for interconnected devices of mixed type
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United States of America Patent
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Oct 1, 2013
Grant Date -
Feb 14, 2013
app pub date -
Aug 21, 2012
filing date -
Dec 6, 2006
priority date (Note) -
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Abstract
A plurality of memory devices of mixed type (e.g., DRAMs, SRAMs, MRAMs and NAND-, NOR- and AND-type Flash memories) having associated device type information is serially interconnected. A serial input (SI) containing a device type (DT) and a device identifier (ID) is fed to one device of the serial interconnection. Upon a match between the fed DT matches the DT of the device, the fed ID is latched in a register of the device and an ID for another device is generated, which is then transferred to the next device in the serial interconnection. Otherwise, ID generation is skipped. These steps are performed in all devices. Thus, sequential IDs are generated for the different device types and also the total number of each device type is recognized. If the fed DT is “don't care”, sequential IDs are generated for all devices and the total number of the devices is recognized.
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