N-bit Adder - Ripple Carry

Intermediate

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Specification

01General Operation

Configurable-width adder (g_width bits) with carry-in and carry-out. Implements bit-by-bit carry propagation (ripple carry). Purely combinational circuit.

Generic g_width (default 4)
Use only ieee.std_logic_1164, not numeric_std

02Interface

i_a

Direction: Input
Width: g_width bits
Description: Operand A

i_b

Direction: Input
Width: g_width bits
Description: Operand B

i_cin

Direction: Input
Width: 1 bit
Description: Carry in

o_sum

Direction: Output
Width: g_width bits
Description: Sum result

o_cout

Direction: Output
Width: 1 bit
Description: Carry out

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