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LEC-EL Product specification
4.3.8
LAN ports
4.3.8.1
First LAN port
The first LAN port is derived from the SOCs RGMII interface
Name
Pin #
Description
GBE0_MDI0+
P30
Differential Pair Signals for External Transformer
GBE0_MDI0-
P29
Carrier Series Termination: Magnetics Module
GBE0_MDI1+
P27
appropriate for 10/100/1000 GBE transceivers
GBE0_MDI1-
P26
Carrier Parallel Termination:
GBE0_MDI2+
P24
Secondary side center tap terminations appropriate
GBE0_MDI2-
P23
for Gigabit Ethernet implementations
GBE0_MDI3+
P20
GBE0_MDI3-
P19
GBE0_LINK100#
P21
Link Speed Indication LED for GBE0 100Mbps
GBE0_LINK1000#
P22
Link Speed Indication LED for GBE0 1000Mbps
GBE0_LINK_ACT#
P25
Link / Activity Indication LED Driven low on Link (10,
100 or 1000 mbps) Blinks on Activity
GBE0_CTREF
P28
Center-Tap reference voltage for Carrier board
Ethernet magnetic (if required by the Module GBE
PHY)
GBE0_SDP
P6
IEEE 1588 Trigger Signal. For hardware
implementation of PTP (precision time protocol)
Page 5
I/O
I/O
Type
Level
I/IO GBE
MDI
O OD
3.3V
CMOS
O OD
3.3V
CMOS
O OD
3.3V
CMOS
Analog
0 to
3.3V max
IO
3.3V
CMOS
copyright © 2021 ADLINK Technology Inc.
Power
PU / PD
Comments
Domain
Standby
Gigabit Ethernet Controller 0: Media Dependent Interface
Differential Pairs 0, 1, 2, 3. The MDI can operate in 1000, 100,
and 10Mbit/sec modes. Some pairs are unused in some modes
according to the following:
1000
MDI[0]+/-
B1_DA+/-
MDI[1]+/-
B1_DB+/-
MDI[2]+/-
B1_DC+/-
MDI[3]+/-
B1_DD+/-
Standby
Shall be able to sink 24mA or more Carrier LED current
Standby
Shall be able to sink 24mA or more Carrier LED current
Standby
Shall be able to sink 24mA or more Carrier LED current
Standby
Standby
SGET SMARC Rev 2.1
100
10
_
TX+/-
TX+/-
RX+/-
RX+/-
1
1
1
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