CRC code calculation circuit and method thereof, and semiconductor device
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United States of America Patent
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Aug 29, 2017
Issued Date -
N/A
app pub date -
Mar 16, 2016
filing date -
Apr 14, 2015
priority date (Note) -
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Abstract
A CRC code calculation circuit including: an extraction circuit that extracts a calculation target packet that is a target of CRC calculation from a signal frame inputted as a parallel signal of a first bit length; a shift circuit that generates, when a bit length of the calculation target packet does not match an integral multiple of the first bit length, data A of a bit length that is the integral multiple of the first bit length by shifting the calculation target packet such that a last bit of the calculation target packet is positioned at a least significant bit, and adding “0” to a most significant bit side of a head bit of the shifted calculation target packet; and a calculation circuit that generates a CRC code by performing a CRC calculation on the data A based on an initial value “0” stored in a register.
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