Encoding and decoding apparatuses and methods for implementing multi-mode coding

A method of transmitting data, the method comprising:

• receiving data bursts of 16-bits to be transmitted through a data line;
• splitting the data bursts into two half-data bursts;
• sending a 1-bit value of each of the two half-data bursts to a data bus inversion (DBI) signal line to encode a pair of 1-bit values into a symbol of the DBI signal line;
• performing 7:8-bit encoding on remaining 7-bits of each of the two half-data bursts to generate codewords comprising four symbols having at least four levels;
• determining whether a maximum transition (MT) event occurs between a last symbol of a previous codeword provided through the data bus and a first symbol of a current codeword in a block boundary between the codewords with respect to the half-data bursts;
• when it is determined that the MT event occurs, inverting the current codeword and transmitting the inverted codeword through the data line;
• and
• when it is determined that no MT event occurs, transmitting the current codeword through the data line.

A method of receiving data, the method comprising:

• receiving, through a data line, codewords of 8-bits comprising four symbols having at least four levels;
• determining whether a current codeword among the codewords received through the data line is an inverted codeword;
• when it is determined that the current codeword is the inverted codeword, inverting the current codeword and outputting the inverted codeword as a first codeword;
• when it is determined that the current codeword is not the inverted codeword, outputting the current codeword as the first codeword;
• converting 8-bits of the first codeword into data bursts of 7-bits by performing 8:7-bit decoding on 8-bits of the first codeword;
• and
• combining the 7-bits converted by the 8:7-bit decoding with a 1-bit value of a symbol received through a data bus inversion (DBI) signal line to recover data bursts of 8-bits.