Apparatus and method for generating pseudo noise code

A method of generating a PN code, the method comprising:

• receiving a clock signal;
• extracting at least two bit values from bit values that are output from a plurality of memory devices in correspondence to the clock signal;
• outputting an XOR operation value with respect to the extracted at least two bit values;
• and
• generating the PN code based on the output XOR operation value,
• wherein:
• the plurality of memory devices is cascaded, and
• the method further comprises:
• outputting an AND operation value with respect to a stored initial value of each of the memory devices and an output value of a memory device that is positioned in a final end among the plurality of cascaded memory devices, and
• a memory device that is positioned in a front end among the plurality of cascaded memory devices receives an AND operation value with respect to an initial value of the memory device of the front end, and
• each of memory devices excluding the memory device of the front end receives an XOR operation value with respect to an AND operation value associated with an initial value of each of the memory devices and an output value of the memory device that is disposed in front of each corresponding memory device.