204
Ethernet Connector
The main board provides a dual-RJ45 connector (JA4A1) for Ethernet connection. See Table 37.
Below are definitions of the speed/status LEDs.
•
Speed LED: Yellow On, 1000-Mbps Ethernet
•
Speed LED: Green On, 100-Mbps Ethernet
•
Speed LED: Off, 10-Mbps Ethernet
•
Status LED: Green On, Ethernet link detected
•
Status LED: Off, Ethernet link not found
•
Status LED: Green Flashing, Ethernet data activity
Table 37. Ethernet Connector Pinout
Signal
Description
JA4A1
Pin
Ethernet Connector
LED Signals:
NIC1_LED_CA_L
Lower (Port 1) green
status LED cathode signal
indicating Port 1 activity
27
NIC1_LED_AN_L
Lower (Port 1) green
status LED anode to 100-
ohm pullup to 3.3 V
Standby
28
LINK100A_L
Lower (Port 1) green
speed LED cathode,
yellow LED anode
29
LINK1000A_L
Lower (Port 1) yellow
speed LED cathode, green
LED anode
30
NIC2_LED_CA_L
Upper (Port 2) green
status LED cathode signal
indicating Port 2 activity
31
NIC2_LED_AN_L
Upper (Port 2) green
status LED anode to 100-
ohm pullup to 3.3 V
Standby
32
LINK100B_L
Upper (Port 2) green
speed LED cathode,
yellow LED anode
33
LINK1000B_L
Upper (Port 2) yellow
speed LED cathode, green
LED anode
34
Ethernet Signals:
PORT1_MDI0P
Port 1 transceiver 0
positive of differential pair
15
PORT1_MDI0M
Port 1 transceiver 0
negative of differential pair
21
PORT1_MDI1P
Port 1 transceiver 1
positive of differential pair
23
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