Hamming (7,4) Corrector

Intermediate

00:00

Specification

01General Operation

The module receives an encoded Hamming word on i_code. It computes the syndrome, corrects the faulty bit when the syndrome is non-zero, then extracts data d3..d0.

Behaviour

even parity;
o_syndrome=000 means no single-bit error is detected;
o_error='1' when a non-zero syndrome is found;
correction of one bit error.

02Interface

i_code

Direction: Input
Width: 7 bits
Description: Received Hamming word

o_data

Direction: Output
Width: 4 bits
Description: Corrected data d3..d0

o_syndrome

Direction: Output
Width: 3 bits
Description: Error position, or 000

o_error

Direction: Output
Width: 1 bit
Description: Single-bit error detected

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