I-Pi-SMARC User's Guide
5.8.2 2nd LAN
Name
Pin #
Description
GBE1_MDI0+
S17
Gigabit Ethernet Controller 1: Media Dependent
GBE1_MDI0-
S18
Interface Differential Pairs 0, 1, 2, 3. The MDI can
GBE1_MDI1+
S20
operate in 1000, 100, and 10Mbit/sec modes. Some
GBE1_MDI1-
S21
pairs are unused in some modes according to the
GBE1_MDI2+
S23
following:
GBE1_MDI2-
S24
GBE1_MDI3+
S26
MDI[0]+/-
GBE1_MDI3-
S27
MDI[1]+/-
MDI[2]+/-
MDI[3]+/-
GBE1_LINK100#
S19
Link Speed Indication LED for GBE 1 100Mbps
GBE1_LINK1000#
S22
Link Speed Indication LED for GBE 1 1000Mbps
GBE1_LINK_ACT#
S31
Link / Activity Indication LED Driven low on Link (10, 100
or 1000 mbps) Blinks on Activity
GBE1_CTREF
S28
Center-Tap reference voltage for Carrier board Ethernet
magnetic `(if required by the Module GBE PHY)`
GBE1_SDP
P5
IEEE 1588 Trigger Signal. For hardware implementation
of PTP (precision time protocol)
Note: The number of functional LAN ports is dependent on the module used.
Page 21
1000
100
10
B1_DA+/-
TX+/-
TX+/-
B1_DB+/-
RX+/-
RX+/-
B1_DC+/-
B1_DD+/-
copyright © 2024 ADLINK Technology Inc.
I/O
I/O
Power
Type
Level
Domain
GBE MDI
Runtime
O OD
3.3V
Runtime
CMOS
O OD
3.3V
Runtime
CMOS
O OD
3.3V
Runtime
CMOS
Analog
0 to 3.3V
Runtime
max
IO
3.3V
Runtime
CMOS
SGET SMARC Rev 2.1
PU /
Comments
PD
Twisted pair signals for external
transformer.
Shall be able to sink 24mA or more Carrier
LED current
Shall be able to sink 24mA or more Carrier
LED current
Shall be able to sink 24mA or more Carrier
LED current
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