Altera 100G Development Kit, Stratix IV GT Edition - Manual (Page 72)

2–64 Chapter 2: Board Components
Components and Interfaces
100G Development Kit, Stratix IV GT Edition Reference Manual September 2010 Altera Corporation
Ethernet RGMII Interface
The Stratix IV GT 100G development board incorporates a triple speed 10/100/1000
Base-T Ethernet RGMII interface.
The implementation uses an auto-negotiating Marvell 88E1111 Ethernet PHY (U66)
with an RGMII interface to the FPGA and interfaces to an RJ-45 connector (J49) with
internal magnetics that can be used for driving copper lines with Ethernet traffic.
Figure 2–11 shows the RGMII interface between the FPGA and Marvell 88E1111 PHY.
Table 2–41 shows the Ethernet RGMII interface pin connection to the FPGA for the
Ethernet PHY.
Figure 2–11. Ethernet RGMII Interface
Stratix IV GT
FPGA
(U44)
RGMII
Marvell 88E1111
Ethernet PHY
(U66)
TX/RX
RJ45
Connector (J49)
Table 2–41. Ethernet RGMII Interface Pin Assignments, Signal Names and Functions (Part 1 of 2)
Board
Reference
Description
Schematic Signal
Name
I/O Standard
Stratix IV GT
Device Pin
Number
Other
Connections
U66.28 Ethernet reset ENET_RESETn
LVCMOS
AV35 —
U66.24 Ethernet management bus data ENET_MDIO AV38 —
U66.25 Ethernet management bus control ENET_MDC AJ32 —
U66.8 Ethernet clock ENET_GTX_CLK AP37 —
U66.9 Ethernet transmit enable ENET_TX_EN AJ31 —
U66.94 Ethernet receive data valid ENET_RX_DV AV37 —
U66.11 Ethernet transmit data ENET_TXD0 AK31 —
U66.12 Ethernet transmit data ENET_TXD1 AK32 —
U66.14 Ethernet transmit data ENET_TXD2 AW36 —
U66.16 Ethernet transmit data ENET_TXD3 AW37 —
U66.95 Ethernet receive data ENET_RXD0 AR35 —
U66.92 Ethernet receive data ENET_RXD1 AT36 —
U66.93 Ethernet receive data ENET_RXD2 AU34 —
U66.91 Ethernet receive data ENET_RXD3 AT34 —
U66.2 Ethernet receive clock ENET_RX_CLK U39 —
U66.31 Media dependent interface 0 (N) MDI_N0 — J49.2
U66.29 Media dependent interface 0 (P) MDI_P0 — J49.1
U66.34 Media dependent interface 1 (N) MDI_N1 — J49.6
U66.33 Media dependent interface 1 (P) MDI_P1 — J49.3