Receive bus
Schematic Signal
Name
FPGA Pin Number
I/O Standard
Description
A68
PCIE_TX_CP12
AV49
1.4 V PCML
Transmit bus
A72
PCIE_TX_CP13
AR47
1.4 V PCML
Transmit bus
A76
PCIE_TX_CP14
AT49
1.4 V PCML
Transmit bus
A80
PCIE_TX_CP15
AP49
1.4 V PCML
Transmit bus
B11
PCIE_WAKEn_R
AU34
1.8V
Wake Signal
4.6.2. 10/100/1000 Ethernet PHY
The Intel Stratix 10 GX FPGA development board supports 10/100/1000 base-T
Ethernet using an external Marvell 88E1111 PHY and Intel Triple-Speed Ethernet
MegaCore MAC function. The PHY-to-MAC interface employs SGMII using the Intel
Stratix 10 GX FPGA LVDS pins in Soft-CDR mode at 1.25 Gbps trasmit and receive. In
10 Mb or 100 Mb mode, the SGMII interface still runs at 1.25 GHz but the packet data
is repeated 10 or 100 times. The MAC function must be provided in the FPGA for
typical networking applications.
The Marvell 88E1111 PHY uses a 2.5V and 1.0V power rails and requires a 25 MHz
reference clock driven from a dedicated oscillator. The PHY interfaces to a HALO
HFJ11-1G02E model RJ45 with internal magnetics that can be used for driving copper
lines with Ethernet traffic.
Figure 8.
SGMII Interface between FPGA (MAC) and Marvell 88E1111 PHY
MDI Interface
SGMII TX/RX
Marvell 10/100/1000
PHY
RJ45+
Magnetics
Intel
Stratix 10 FPGA
Table 17.
Ethernet PHY Pin Assignments, Signal Names and Functions
Board Reference
(U13)
Schematic Signal
Name
FPGA Pin Number
I/O Standard
Description
23
ENET_INTn
AC35
3.0V
Management bus
interrupt
25
ENET_MDC
AD35
3.0V
Management bus data
clock
24
ENET_MDIO
AD34
3.0V
Management bus data
28
ENET_RESETn
AB34
3.0V
Device reset
76
ENET_LED_LINK10
–
2.5V
10 Mb link LED
74
ENET_LED_LINK100
–
2.5V
100 Mb LED
73
ENET_LED_LINK1000
–
2.5V
1000 Mb link LED
69
ENET_LED_RX
–
2.5V
RX data active LED
continued...
4. Board Components
UG-20046 | 2018.07.20
Intel
®
Stratix
®
10 GX FPGA Development Kit User Guide
32