User guide

Using the System
28
3-11 Using the Fast Ethernet Network Controller
The DE2 board uses DM9000A for Fast Ethernet interface. The DM9000A is a fully
integrated and cost-effective low pin count single chip Fast Ethernet controller with a
general processor interface, a 10/100< PHY, and 4K Dword SRAM. It is designed
with low power and high performance process that support 3.3V with 5V IO
tolerance. Figure 3.13 shows the schematic design for the Fast Ethernet interface for
DE2. The pin assignment of the associated interface is shown in Table 3.11.
Figure 3.13 Fast Ethernet Solution for DE2
Signal Name FPGA Pin No. Description
ENET_DATA[0] PIN_D17 DM9000A DATA[0]
ENET_DATA[1] PIN_C17 DM9000A DATA[1]
ENET_DATA[2] PIN_B18 DM9000A DATA[2]
ENET_DATA[3] PIN_A18 DM9000A DATA[3]
ENET_DATA[4] PIN_B17 DM9000A DATA[4]
ENET_DATA[5] PIN_A17 DM9000A DATA[5]
ENET_DATA[6] PIN_B16 DM9000A DATA[6]
ENET_DATA[7] PIN_B15 DM9000A DATA[7]
ENET_DATA[8] PIN_B20 DM9000A DATA[8]
ENET_DATA[9] PIN_A20 DM9000A DATA[9]
ENET_DATA[10] PIN_C19 DM9000A DATA[10]
ENET_DATA[11] PIN_D19 DM9000A DATA[11]