1. 1 GPS Waypoint Navigation Team M-2: Charles Norman (M2-1) Julio Segundo (M2-2) Nan Li (M2-3) Shanshan Ma (M2-4) Design Manager: Zack Menegakis Presentation 7: Functional Block Layout & Floorplan March 20, 2006 Overall Project Objective: Design a low-power chip that navigates an aircraft to pre- determined waypoints.

2. 2 Status Design Proposal Design Proposal Architecture Proposal Architecture Proposal Size Estimates / Floorplan Size Estimates / Floorplan  Schematic Design Top-level wiring Top-level wiring Cell Analysis Cell Analysis Individual Schematics Simulated Individual Schematics Simulated Clock Speed Clock Speed Updated Floorplan Updated Floorplan Power Estimates at Targeted Clock Speeds Power Estimates at Targeted Clock Speeds Top-level simulated Top-level simulated Critical Path Estimates Critical Path Estimates  Layout Basic Gates Basic Gates Registers Registers  Major Functional Blocks  Everything Else  Simulations

3. 3 Design Decisions  Replace SRAM with registers

4. 4 Power Consumption SRAM 305.5uW Total 540.7uW

5. 5 Block Level System Diagram

6. 6 Pathmill Result  Left Side: 6.630ns Combinational Logic 6.630ns Combinational Logic + 0.2ns Registers + 0.113ns Input Buffer + 0.113ns Output Buffer Total: 7.056ns  Right Side: 4.139ns Combinational Logic 4.139ns Combinational Logic + 0.2ns Registers Total: 4.339ns

7. 7 Inputs Blackbox Outputs

8. 8 Cell Analysis Functional Component Recent Count Area (µm²) Power FSM2722,0001.02nW Registers (old SRAM) 3,988 3,988-- Registers/Buffers Clock / Counter Logic Done Logic 6,2101,91254828,50010,5003,5009.8uW-- Speed Comparator Altitude Comparator Waypoint Comparator 2564123,6969001,90016,000902pW1.42nW225.4uW Heading Calculator Distance Calculator Speed Calculator Angle Calculator 3,4563,4281,6261,24615,50015,5007,0006,50015.59nW11.12nW5.82nW4.71nW Total27,050--

9. 9 30 bit Adder

10. 10 30 bit Adder

11. 11 30 bit Adder

12. 12 30 bit Register data clk out

13. 13 30 bit Mux 2 to 1 sel AB Y

14. 14 What’s Next… Here’s what’s on our agenda for next week…  Finish layout for major functional block

15. 15 Questions???