ELEN 468 Advanced Logic Design

1. ELEN 468Advanced Logic Design Lecture 18 FPGA (Field Programmable Gate Arrays) ELEN 468 Lecture 18

2. Custom and ASIC Design vs. FPGA and PLD • Custom and ASIC • Design before fabrication • FPGA and PLD • Design on fabricated chips ELEN 468 Lecture 18

3. Characteristics of FPGAs • Low cost • Fast time-to-market • Large area • Slow circuit speed • Major venders • Xilinx • Altera ELEN 468 Lecture 18

4. FPGA v.s. Microprocessors • Xilinx XC2V8000: 8M equivalent gates, 420MHz • Intel Pentium 3: 9.5M transistors, 800MHz • Intel Pentium 4: 42M transistors, 1.5GHz ELEN 468 Lecture 18

5. Programmable Switch Types • Anti-fuse • EPROM • SRAM ELEN 468 Lecture 18

6. Type I: Anti-fuse Not reprogrammable ELEN 468 Lecture 18

7. Type II: EPROM ELEN 468 Lecture 18

8. Type III: SRAM-Based Volatile ELEN 468 Lecture 18

9. Basic Structure ELEN 468 Lecture 18

10. Configurable Logic Block (CLB) ELEN 468 Lecture 18

11. I/O Block ELEN 468 Lecture 18

12. Interconnect Structure – Xilinx 3000 Series ELEN 468 Lecture 18

13. Switch Box ELEN 468 Lecture 18

14. PIP – Programmable Interconnect Point ELEN 468 Lecture 18

15. PIP Within a Switch Box ELEN 468 Lecture 18

16. SRAM-Based PIP in a Big Picture ELEN 468 Lecture 18

17. A CLB With Its Neighboring Switch Boxes ELEN 468 Lecture 18

18. A Switch Box With Its Neighboring CLBs ELEN 468 Lecture 18

19. Detailed Routing Architecture ELEN 468 Lecture 18

20. Wire Segmenting ELEN 468 Lecture 18

21. Example of Length-2 Interconnect ELEN 468 Lecture 18