226 4 by 4 Array Multiplier
226 : 4 by 4 Array Multiplier
- Author: Hanyuan (Bob) Huang
- Description: 4x4 Structural Array Multiplier
- GitHub repository
- Clock: 0 Hz
How it works
The structural 4 by 4 binary array multiplier generates four partial products by ANDing each bit of one 4-bit input with each bit of the other. Each partial product is then shifted according to its significance (based on bit position). The shifted rows are summed using binary adders, yielding an 8-bit product. This structured approach is called an array multiplier.
How to test
To test a 4x4 binary multiplier, apply a set of 4-bit input pairs, covering typical, edge, and corner cases. For each pair, verify that the output matches the expected 8-bit product. Automate tests to check all possible inputs (total of 256 combinations) if feasible, or focus on key cases to ensure accuracy and catch potential design errors.
External hardware
N/A
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | q[0] | p[0] | |
| 1 | q[1] | p[1] | |
| 2 | q[2] | p[2] | |
| 3 | q[3] | p[3] | |
| 4 | m[0] | p[4] | |
| 5 | m[1] | p[5] | |
| 6 | m[2] | p[6] | |
| 7 | m[3] | p[7] |