1g/10gbe testbench simulation flow, 1g/10gb ethernet mode, 1g/10gbe testbench simulation flow –9 – Altera 10-Gbps Ethernet MAC MegaCore Function User Manual

Page 54: 1g/10gb ethernet mode –9

Chapter 5: 1G/10GbE MAC Design Example

5–9

1G/10GbE Testbench

February 2014

Altera Corporation

10-Gbps Ethernet MAC MegaCore Function User Guide

5.5.4. 1G/10GbE Testbench Simulation Flow

The 1G/10GbE testbench provides two modes for simulation:

■

1G/10Gb Ethernet mode

■

Backplane-KR mode

By default the testbench runs in 1G/10Gb Ethernet mode.

To switch to backplane-KR mode, open the tb.sv file and specify the
MODE_1G10G_KR_BAR

parameter to 0.

5.5.4.1. 1G/10Gb Ethernet Mode

Upon a simulated power-on reset, the testbench performs the following operations:

1. Initializes the DUT by configuring the following options through the Avalon-MM

interface:

a. Changes both channel 1 and channel 0 to be operating speed at 10 Gbps.

b. Configures the MAC. In the MAC, enables address insertion on the transmit

path and sets the transmit primary MAC address to EE-CC-88-CC-AA-EE.

c. In the TX and RX FIFO buffers (Avalon-ST Single Clock FIFO core), enables

drop on error.

d. Waits for both the MAC and PHY to be ready to receive data.

2. Starts packet transmission. The testbench sends a total of eight packets:

a. Three 64-byte basic Ethernet frames

b. 1518-byte VLAN frame

c. 1518-byte basic Ethernet frame

d. 64-byte stacked VLAN frame

e. 500-byte VLAN frame

f. 1518-byte stacked VLAN frame

3. Displays the MAC statistics in the transcript panel.

4. Changes the operating speed for both channels.

a. Changes the operating speed for both channels to 1 Gbps.

b. Disables clause 37 auto-negotiation for both channels.