2. array multiplier

• Multiplication basic operation in DSP multiplies occupies larger areas long latency and consume considerate power

• A Multiplier circuit works on two input multipliers multiplier the product of two numbers is obtained by adding the multiple and itself the number of times a specified by multiplier

• Let us consider in multiplication of a=a1a2a1a0 and b=b3b2b1b0

$A_3 a_2 a_1 a_0$

× $B_3 b_2 b_1 b_0$

$a_3b_3 a_2b_2 a_1b_1 a_0b_0$

$A_3b_1 a_2b_1 a_2b_1 a_0b_1$ $A_3b_2 a_2b_2 a_1b_1 a_0b_2$ $A_3b_3 a_2b_3 a_1b_3 a_0b_3$

$P_1 P_6 P_5 P_4 P_3 P_2 P_1 P_0$

$P_1 = \Sigma_{i = \alpha + \beta}\alpha + \beta + C_i -1$

Partial product generation

4×4 multiplier

3. barrel shifter