10
ECP5 PCI Express Board User’s Guide
Ethernet Interfaces
(See Appendix B, "RJ45" sheet)
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
LED
Status Description
RJ45 (Yellow)
LED RX
RJ45 (Yellow)
LED TX
Signal
PHY
RxClk
A18
RxCtrl
AC28
RxD0
A19
RxD1
F18
RxD2
D18
RxD3
B19
TxClk
A2
TxCtrl
AD29
TxD0
A5
TxD1
A4
TxD2
A3
TxD3
D7
Mdc
AE30
Mdio
AD30
CLK125
B29(URC_GPLL1T_IN)
CLK125
C17 (PCLKT0_0)
Resetn
AC31
Config
AE31