1. FPGA Microprocessor Cores company

2. Hardcore PowerPC Softcore PicoBlaze MicroBlaze

3. PowerPC PowerPC 405 features Embedded32-bit RISC processor with Harvard architecture 5-stage pipeline (fetch, decode, execute, write back and load write back stage) Branch prediction Hardware multiply/divide unit The auxiliary processor unit (APU)

4. PowerPC 405 functional unit Instruction and data cache, 16 KB each Memory management unit with 64-entry translation lookaside buffer (TLB) Fetch & decode unit Execution unit with thirty two 32-bit generalpurpose registers, ALU , and MAC (Multiple Accumulate Unit) Timers Debug logic

5. PPC405 Organization

6. PicoBlaze: PicoBlaze key features Embedded 8-bit RISC processor 16-byte-wide general-purpose data registers 256-1024 instruction words Byte-wide ALU operation with carry and zero flags 64-byte internal scratchpad RAM 256 input/output ports Four to 31 locations of CALL/RETURN stack Each instruction takes two clock cycles

7. PicoBlaze key features Twenty-one MIPS for CoolRunner II to 100 MIPS for Virtex 4 Instruction size 16 to 18-bits Eight to 16 ,8-bit registers Size 76-96 slices (Virtex/Spartan) or 212 macrocells in CoolRunner-II

8. PicoBlaze Block Diagram

9. MicroBlaze: MicroBlaze key features A Harvard 32-bit RISC processor MicroBlaze v4 is a three-pipeline-stage core with 0.92 DMIPS/MHz MicroBlaze v5 is a five-pipeline-stage core with 1.15 DMIPS/MHz The ALU, shifter, and 32 32 register file are standard

10. MicroBlaze optional items Barrel shifter Array multiplier Divider Floating-point unit for add, subtraction, multiply, divide, and comparison Data cache from 2-64 KB Instruction cache from 2 to 64 KB

11. MicroBlaze Core Block Diagram

12. Creating a PowerPC or MicroBlaze design The Xilinx EDK Toolset: EDK = Embedded Development Kit. It is a set of tools used to build embedded processing systems. i.e. Systems-On-Chip (SoCs) Processors (MicroBlaze, PowerPC) Memories (BRAM, DDR) Peripherals (UART, GPIO, Ethernet, Custom, etc.) Provides a single environment for Simulation Synthesis Compilation

13. Using EDK: Xilinx Platform Studio (XPS) - the actual tool.

14. Xilinx Plaform Studio

15. Using the PicoBlaze in an FPGA Design The PicoBlaze microcontroller is supplied as a VHDL source file, called KCPSM3.vhd Synthesis: Xilinx Synthesis Tool (XST) for logic synthesis Simulation: ModelSim, pBlazSIM

16. Comparison PowerPC: Low power dissipation, power-conscious applications Higher speed PicoBlaze: provides cost-efficient microcontroller-based control and simple data processing. PicoBlaze fits for8-bit application, such as automotive and home appliance

17. Comparison MicroBlaze: Easy to use with EDK High performance softcore processor - Most of instructions can be completed with 1 cycles - Shorter pipeline, higher working frequency