Nios II High-Performance Example with Bridges
The Nios® II high-performance example illustrates how you can use bridges in your design to control the topology of your system. By controlling the system's topology, you can also increase the fMAX of your design.
This design example is based on the full-featured design provided in the Nios II Embedded Design Suite (EDS) and is enhanced to run at a higher clock speed without sacrificing features. Floating-point math hardware has been added to the design to accelerate single precision floating-point math operations.
Download high-performance full-featured ZIP (699 KB)
Design Specifications
- Nios II/f core (with floating-point math hardware)
- JTAG debug module (level 1)
- On-chip tightly coupled data memory (8 Kbyte)
- On-chip tightly coupled instruction memory (4 Kbyte)
- DDR SDRAM controller (32 Mbyte)
- SSRAM controller (2 Mbyte)
- CFI flash memory interface (16 Mbyte)
- DMA controller
- EPCS controller (with bootloader)
- JTAG UART
- UART (RS-232)
- Two timers
- Ethernet interface
- LED parallel I/O (PIO)
- Seven-segment display PIO
- Push-button PIO
- LCD display interface
- Performance counter
- System ID peripheral
Figure 1. Nios II High-Performance Example with Bridges
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Notes:
- TCIM = tightly coupled instruction master
- TCDM = tightly coupled data master
- RM = read master
- WM = write master
Performance
- 150-MHz clock frequency
- 167 MIPS* (*Dhrystones 2.1 benchmark) with .text, .rodata, .rwdata in SSRAM and heap, stack in tightly coupled data memory
- 100-MHz clock frequency
- 107 MIPS* (*Dhrystones 2.1 benchmark) with .text, .rodata, .rwdata in SSRAM and heap, stack in tightly coupled data memory
Additional Designs
You can also refer to the Standard Nios II Hardware Design Example for the Nios II Embedded Evaluation Kit, Cyclone III Edition to see examples of where to add bridges to your design to increase system performance.
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These Website Design Examples may be used within Altera Corporation devices only and remain the property of Altera. They are being provided on an "as-is" basis and as an accommodation, and therefore all warranties, representations, or guarantees of any kind (whether express, implied or statutory) including, without limitation, warranties of merchantability, non-infringement, or fitness for a particular purpose, are specifically disclaimed. Altera expressly does not recommend, suggest, or require that these examples be used in combination with any other product not provided by Altera.
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