Ethernet Interfaces - Lattice Semiconductor ECP5 User Manual

Ethernet Interfaces

One Marvell 88E1512 Gigabit Ethernet transceiver device (U11) is included on the board. This physical layer
device supports 1000BASE-T, 100BASE-TX, and 10BASE-T applications via a standard media interface to a RJ45
connection. The RJ45 connection includes network magnetics providing the proper signal conditioning, electro-
magnetic interference suppression and signal isolation. This connector includes two LEDs and the board includes
four status LEDs from the Marvell device. The LEDs are register-programmed and detailed descriptions are avail-
able in the Marvell device data sheet.
Table 6. PHY Status Indicators
The Marvell 88E1512 device communicates via a RGMII interface to the ECP5 device.
Table 7. FPGA GPIO to RGMII Interfaces
(See Appendix B, "RJ45" sheet)
LED
RJ45 (Yellow)
RJ45 (Yellow)
Signal
RxClk
RxCtrl
RxD0
RxD1
RxD2
RxD3
TxClk
TxCtrl
TxD0
TxD1
TxD2
TxD3
Mdc
Mdio
CLK125
CLK125
Resetn
Config
ECP5 PCI Express Board User's Guide
Status Description
LED RX
LED TX
PHY
A18
AC28
A19
F18
D18
B19
A2
AD29
A5
A4
A3
D7
AE30
AD30
B29(URC_GPLL1T_IN)
C17 (PCLKT0_0)
AC31
AE31
10