Chapter 2: Board Components
2–29
Components and Transceiver Interfaces
August 2015
Altera Corporation
Cyclone IV GX FPGA Development Board
Reference Manual
Table 2–30
lists the Ethernet PHY interface pin assignments.
Table 2–31
lists the Ethernet PHY interface component reference and manufacturing
information.
Transceiver Connector (Optional)
The HSMC port B interface (J2) uses the same transceivers as the PCIe interface. A
capacitor or resistor stuffing option is used to select the transceivers for either the
PCIe or the HSMC port B interface. The default stuffing option is the PCIe interface.
Table 2–30. Ethernet PHY Pin Assignments, Signal Names and Functions
Board Reference
Description
Schematic Signal Name
I/O Standard
Cyclone IV GX
Device
Pin Number
U21.11
RGMII TX data
ENET_T_TX_D0
1.8-V CMOS
G10
U21.12
RGMII TX data
ENET_T_TX_D1
E3
U21.13
RGMII TX data
ENET_T_TX_D2
D10
U21.14
RGMII TX data
ENET_T_TX_D3
B10
U21.8
RGMII TX clock
ENET_T_GTX_CLK
D9
U21.9
RGMII TX control
ENET_T_TX_EN
A27
U21.95
RGMII RX data
ENET_T_RX_D0
F5
U21.92
RGMII RX data
ENET_T_RX_D1
B9
U21.93
RGMII RX data
ENET_T_RX_D2
G14
U21.91
RGMII RX data
ENET_T_RX_D3
E13
U21.2
RGMII RX clock
ENET_T_RX_CLK
B15
U21.94
RGMII RX data valid
ENET_T_RX_DV
E15
U21.25
Management bus control
ENET_T_MDC
K21
U21.24
Management bus data
ENET_T_MDIO
G7
U21.23
Management bus interrupt
ENET_T_INTN
A11
U21.28
Device reset
ENET_T_RESETn
D6
U21.68
RX data active LED
ENET_LED_TX
—
U21.69
TX data active LED
ENET_LED_RX
—
U21.76
10 Mbps connection speed LED
ENET_LED_LINK10
—
U21.74
100 Mbps connection speed LED
ENET_LED_LINK100
1.8-V CMOS
—
U21.73
1000 Mbps connection speed LED
ENET_LED_LINK1000
—
U21.70
Duplex or collision LED
ENET_LED_DUPLEX
—
Table 2–31. Ethernet PHY Component Reference and Manufacturing Information
Board
Reference
Description
Manufacturer
Manufacturing
Part Number
Manufacturer
Website
U21
Ethernet PHY BASE-T device
Marvell Semiconductor
88E1111-B2-CAAIC000
www.marvell.com