Parity bits are often used in digital communication for error detection and correction. The simplest of these involve transmitting one additional bit with the data, a parity bit. Use Verilog arrays to represent a parity generator that generates a 5-bit-odd-parity generation for a 4-bit input number

Question

Parity bits are often used in digital communication for error detection and correction. The simplest of these involve transmitting one additional bit with the data, a parity bit. Use Verilog arrays to represent a parity generator that generates a 5-bit-odd-parity generation for a 4-bit input number using the look-up table (LUT) method.

Accepted Answer

The input word is a 4-bit binary number. A 5-bit odd-parity representation will contain exactly an odd number of 1s in the output word. This can be accomplished by the ROM or LUT method using a look-up table of size 16 entries × 5 bits. The look-up table is indicated in Figure 2-60.

The Verilog code for the parity generator is illustrated in Figure 2-61. The first 4 bits of the output are identical to the input. Hence, instead of storing all 5 bits of the output, one might store only the parity bit and then concatenate it to the input bits. The parameter construct is used to define the ParityBit which is 1-bit constant, and the 4-bit input data and 1-bit ParityBit are concatenated to make a parity code as an output.

Question 2.5: Parity bits are often used in digital communication for erro...

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