Lan Ports - ADLINK Technology SMARC NXP iMX 8M Series User Manual

LEC-iMX8M plus User's Guide 1.0

4.3.8 LAN ports

4.3.8.1 First LAN port
The first LAN port is derived from the SOCs RGMII0 interface
Name Pin # Description
GBE0_MDI0+ P30 Gigabit Ethernet Controller 0: Media Dependent
GBE0_MDI0- P29 Interface Differential Pairs 0, 1, 2, 3. The MDI can
GBE0_MDI1+ P27 operate in 1000, 100, and 10Mbit/sec modes. Some
GBE0_MDI1- P26 pairs are unused in some modes according to the
GBE0_MDI2+ P24 following:
GBE0_MDI2- P23
GBE0_MDI3+ P20 MDI[0]+/-
GBE0_MDI3- P19 MDI[1]+/-
MDI[2]+/-
MDI[3]+/-
GBE0_LINK100# P21 Link Speed Indication LED for GBE 0 100Mbps
GBE0_LINK1000# P22 Link Speed Indication LED for GBE 0 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 34
1000 100 10 _
B1_DA+/- TX+/- TX+/-
B1_DB+/- RX+/- RX+/-
B1_DC+/-
B1_DD+/-
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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 Runtime
3.3V 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