1. Digital Radio SoC Lab
2004 Spring
Bit Engineering Lab., SITI

2. Multiplier Design Making a 2n-bit multiplier using n-bit multipliers
Making 4n-bit multipliers from n-bit
Design of 1-bit multiplier
Bit Engineering Lab., SITI

3. Multiplier Design Making a 2n-bit multiplier using n-bit multipliers
Example
n=1
Bit Engineering Lab., SITI

4. Multiplier Design Making 4n-bit multipliers from n-bit
Step 1: Form & arrange Partial Products
Step 2: Sum
example
Bit Engineering Lab., SITI

5. Multiplier Design Design of 1-bit multiplier “brick”
1-bit multiplier design
AND gate forms 1x1 product
2-bit sum propagates from top to bottom
Carry propagates to left
Bit Engineering Lab., SITI

6. Multiplier Design Design of 1-bit multiplier “brick” (Cont.) example
Truth Table
Brick design
Bit Engineering Lab., SITI

7. Multiplier Design Design of 1-bit multiplier “brick” (Cont.)
The Magnified version of the previous slide 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Bit Engineering Lab., SITI