1. CMPE222 Final Project Presentation More Optimization on FIR Manju Anand manju@cse.ucsc.edu 06/03/03

2. Outline of Presentation Problem Different Optimizations Waveforms Result Improvements?

3. Problem Statement Minimize power, timing and area requirements for design of FIR filter Architectural improvements Improvements in Synthesis stage using Design Analyser from Synopsys Improvements in Placement and Routing using Seultra from cadence

4. Optimizations Combine all calculations into one stage This reduces 3 calc stages to one. Reduces latency from 5 cycles to 3 Increases critical path time Combine all multiplication into combinatorial network (Ack: previous presentation on 16-Tap FIR filter) Reduce 6-stages to 4-stages: reduce the 3 calc stages in datapath to 1 stage.

5. Signal Waveforms - Unoptimized

6. Waveform – Optimized version

7. Optimization – Combine calc stages RunArea (Sq. micron) Power (mW) Time (nsec) P*D*A Med setting and boundary opt 57327.17 97 1.861814.671565754.7 With incremental mapping and prioritize min path 88924.66 41 3.335210.203025131.7

8. Unoptimized version and one with combinatorial mult unit RunAreaTimePowerP*D*A Comb mult unit 57340.484314.472.48432061265.466 Unoptimi zed 77135.8906 25 9.775.10783849328.24

9. Improvements Use structural models for adders and multipliers Use other tools from Cadence and Synopsys like power compiler, etc to improve power

10. Thank you