Interfaces and Connectors
VL-EPICs-36 Reference Manual
31
Ethernet (Interface J5, LED J4)
The VL-EPICs-36 features an on-board Intel 82574IT Gigabit Ethernet controller, which
provides a standard IEEE 802.3 Ethernet interface for 1000Base-T, 100Base-TX, and 10Base-T
applications. The 82574IT provides one PCIe lane with sufficient bandwidth to support a 2.5
gigabits per second (GB/s) transfer rate.
BIOS
C
ONFIGURATION
The Ethernet interface (J5) uses PCI interrupt INTB#. CMOS Setup screen is used to select the
IRQ line routed to each PCI interrupt line.
E
THERNET
C
ONNECTOR
(J5)
A board-mounted RJ-45 connector is provided to make connection with a Category 5 or 6
Ethernet cable. The 82574IT Ethernet controller auto-negotiates connection speed. The interface
uses IEC 61000-4-2-rated TVS components to help protect against ESD damage.
E
THERNET
LED
(J4)
Connector J4 provides an on-board Ethernet LED interface. The 3.3V power supplied to this
connector is protected by a 1 Amp fuse.
Table 10: Ethernet LED Connector Pinout
J4
Pin
Signal
Name
Function
1
+3.3V
Protected Power Supply
2
YEL
Yellow LED
3
ORN
Orange LED
4
GRN
Green LED
5
+3.3V
Protected Power Supply
6
NC
(not connected)
7
NC
(not connected)
8
NC
(not connected)
9
GND
Ground
10
NC
(not connected)
