Altera Stratix II GX Embedded Gigabit Ethernet MAC/PHY - Manual (Page 7)

Stratix II GX Embedded Gigabit Ethernet MAC / PHY
User's Guide
Version 1.0 - October 2005
Table 1: Core Configuration Options
Option Description
Technology The Core is optimized for Altera Stratix II GX devices.
Maximum Frame Length
Maximum Frame Length. Defines a 14-Bit maximum frame length used by
the MAC receive logic to check frames.
Pause Frame Quanta
Receive Pause Quanta. 16-Bit value sets, in increment of 512 Ethernet bit
times, the pause quanta used in each Pause Frame sent to the remote
Ethernet device.
Enable Promiscuous
Receive Mode
When selected, all frames are received without Unicast address filtering.
Insert MAC Address on
Transmit
If select the MAC overwrites the source MAC address with the MAC set on
the Core signal mac_addr. If disabled, the source MAC address received
from the transmit application transmitted is not modified by the MAC.
3.3 Design Kit Database
Table 2: Design Kit Directory Structure
Directory Description
models Ethernet Frame generator and monitor models.
quartus
Contains the netist for Altera Stratix implementation and a script
to control the Altera Quartus design software.
simulation
Scripts to configure and execute RTL and Gate-Level Simulation
as well the Modelsim integrated TestBuilder.
source
Encrypted VHDL design source files, testbench and
configuration files.
3.4 Simulation Environment
A complete testbench is provided (File testbench.vhd in directory source/testbench/vhdl)
which implements the Core together with a simulation control state machine and the following
drivers and monitors.
• GMII Ethernet Frame Generator: Configurable Ethernet Gigabit Ethernet frame generator
with GMII interface.
• GMII Ethernet Frame Monitor: Gigabit Ethernet frame monitor with GMII interface.
• Ethernet Frame Generator (FIFO mode): Configurable Ethernet frame generator
simulating a user application connected to the MAC transmit FIFO interface.
• Ethernet Monitor (FIFO mode): Ethernet frame checker simulating a user application
connected to the MAC receive FIFO interface.
• PCS: 1000Base-X PCS function that decodes / encodes data from / to the MAC / PHY
Core and controls the Auto-Negotiation process within the testbench.
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