3 Development Board Circuit
3.6 Ethernet
DBUG375-1.0E
15(40)
Name
FPGA Pin No.
BANK
I/O Level Description
DDR3_LDM
R3
6
1.5V
Data input mask
DDR3_LDQSn R4
6
1.5V
Data strobe
DDR3_LDQSp P4
6
1.5V
Data strobe
DDR3_ODT
B2
7
1.5V
On-Die Termination
Enable
DDR3_RASn
D1
7
1.5V
Row address
strobe
DDR3_RSTn
W4
6
1.5V
Reset
DDR3_UDM
K4
7
1.5V
Data input mask
DDR3_UDQSn L1
7
1.5V
Data strobe
DDR3_UDQSp L2
7
1.5V
Data strobe
DDR3_WEn
C1
7
1.5V
Write enable
3.6
Ethernet
3.6.1
Introduction
The development board has two Ethernet circuits and supports gigabit
mode, which can provide hardware testing environment in the LED display
applications. The interface connected to other devices is RJ45 and the
transformer is integrated. The connection diagram is as follows:
Figure 3-5 Connection Diagram of FPGA and Ethernet
PHY1
PHY1_GTXCLK
PHY1_RXC
PHY1_TX_EN
PHY1_RX_DV
PHY1_TXD[3..0]
PHY1_RXD[3:0]
CLK_PHY1
PHY2
RST_N
PHY_MDC
PHY_MDIO
PHY2_GTXCLK
PHY2_RXC
PHY2_TX_EN
PHY2_RX_DV
PHY2_TXD[3..0]
PHY2_RXD[3:0]
CLK_PHY2
GbE 2
GbE 1
25MHz
25MHz