3 Development Board Circuit
3.6 Ethernet
DBUG375-1.2E
14(34)
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
3.6.2
Pinout
Table 3-5 Ethernet Pinout
Name
FPGA
Pin No.
BANK
I/O
Level
Description
PHY_MDC
H19
2
3.3V
Manage channel clock
PHY_MDIO
J18
2
3.3V
Manage channel data
PHY1_GTCLK
H21
2
3.3V
PHY1 Transmit Clock
PHY1_TXD0
H22
2
3.3V
PHY1 transmitting data channel 0
PHY1_TXD1
G21
2
3.3V
PHY1 transmitting data channel 1
PHY1_TXD2
G22
2
3.3V
PHY1 transmitting data channel 2
PHY1_TXD3
F21
2
3.3V
PHY1 transmitting data channel 3
PHY1_TX_EN
F22
2
3.3V
PHY1 transmitting data enable
PHY1_RXC
E22
2
3.3V
PHY1 receiving clock
PHY1_RXD0
D22
2
3.3V
PHY1 receiving data channel 0
PHY1_RXD1
D20
2
3.3V
PHY1 receiving data channel 1