BECKHOFF EtherCAT IP Core for Altera FPGAs v3.0.10 - Manual (Page 64)

Example Designs
III-52 Slave Controller – IP Core for Altera FPGAs
6.2 EBV Cyclone IV DBC4CE55 with NIOS
6.2.1 Configuration and resource consumption
Table 14: Resource consumption NIOS example design DBC4CE55
Configuration Resources EP4CE55
Physical layer 2x RMII Les 15,614 28 %
Internal Function 2x FMMU
4x SyncManager
1 KB RAM Registers 7,476 13 %
Distributed clocks none M9K 136 52 %
Feature details RUN_LED,
LED Test PLLs 1 25 %
PDI Digital I/O: 2 Byte IN, 2
Byte OUT Multiplier
elements 0 0 %
NOTE: The board uses two individual PHY management interfaces, with both PHYs having the same PHY
addresses. Additionally, some of the PHY address bits have to be configured by extra logic inside the FPGA.
Because of the identical PHY addresses, the management interfaces on the board cannot be combined to one,
and thus, the EtherCAT IP Core cannot make use of the MII management interfaces of the PHY.
The Ethernet PHYs used on the DBC3C40 require Enhanced link detection for proper link loss reaction times.
Due to the hardware restrictions, it cannot be enabled on this board. This is suitable for evaluation purposes, but
not for production.
It is probably possible to change the PHY addresses on the board, combine the two management interfaces
inside the FPGA and add extra logic for proper configuration of the PHY address bits which are strapped on
signals connected to the FPGA. If this can be done, the PHY management interface as well as the Enhanced Link
Detection should be enabled.
6.2.2 Functionality
The NIOS demo application performs the following tasks:

Accept any EtherCAT Slave State request (copying AL Control to AL Status register)

Visualize EtherCAT Slave State (7-segment displays and running IO light in Operational mode).
The NIOS demo application is not suitable for production, it cannot be certified. Use the EtherCAT
Slave Stack Code (SSC, available from the ETG) for products.
6.2.3 Implementation
The SOPC needs to be generated before implementing the example design. Perform the following
steps for implementation:
1. Open Altera Quartus II
2. Open example design from \example_designs\DBC4CE55_EtherCAT_NIOS
3. Choose Tools on the menu bar and select Qsys
…
4. Open Qsys system “DBC4CE55_EtherCAT_NIOS_QSYS.qsys” and view IP configurations
5. Select Generate on the Generation tab to generate system
6.
Choose “Tools” on the menu bar and select “NIOS II Software Build Tools for Eclipse”
7. Select workspace, e.g. create
\example_designs\DBC4CE55_EtherCAT_NIOS\workspace
8. Choose File on the menu bar and select New – “NIOS II Application and BSP from Template”
9. Select SOPC information file “DBC4CE55_EtherCAT_NIOS_QSYS.sopcinfo”, project template
“BECKHOFF EtherCAT” and enter project name the “EtherCAT_Demo”
10. Select Finish
11. Choose Project on the menu bar and select
“Build all” to build the software project
 “EtherCAT_Demo.elf” file is generated in the Debug-Folder of your workspace directory
12. Select “Make Targets – Build…” from the context menu of the “EtherCAT_Demo” project.
13. Select “mem_init_generate” and press “Build” button. This will generate the memory initialization
files.