ADLINK Technology Inc.
LEC-
iMX6R2 User’s Guide
Page 38
copyright © 2021 ADLINK Technology Inc.
4.3.8.2
Second LAN port
Second LAN port is derived from USB hub
Name
Pin #
Description
I/O
Type
I/O
Level
Power
Domain
PU /
PD
Comments
GB
GBE1_MDI0-
GB
GBE1_MDI1-
GB
GBE1_MDI2-
GB
GBE1_MDI3-
S17
S18
S20
S21
S23
S24
S26
S27
Gigabit Ethernet Controller 1: 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 100 10
MDI[0]+/- B1_DA+/- TX+/- TX+/-
MDI[1]+/- B1_DB+/- RX+/- RX+/-
MDI[2]+/- B1_DC+/-
MDI[3]+/- B1_DD+/-
GBE MDI
Runtime
Twisted pair signals for external
transformer.
GBE1_LINK100#
S19
Link Speed Indication LED for GBE 1 100Mbps
O OD
CMOS
3.3V
Runtime
Shall be able to sink 24mA or more Carrier
LED current
GBE1_LINK1000# S22
Link Speed Indication LED for GBE 1 1000Mbps
O OD
CMOS
3.3V
Runtime
Shall be able to sink 24mA or more Carrier
LED current
GBE1_LINK_ACT# S31
Link / Activity Indication LED Driven low on Link (10, 100
or 1000 mbps) Blinks on Activity
O OD
CMOS
3.3V
Runtime
Shall be able to sink 24mA or more Carrier
LED current
GBE1_CTREF
S28
Center-Tap reference voltage for Carrier board Ethernet
magnetic `(if required by the Module GBE PHY)`
Analog
0 to 3.3V
max
Runtime
GBE1_SDP
P5
IEEE 1588 Trigger Signal. For hardware implementation
of PTP (precision time protocol)
IO
CMOS
3.3V
Runtime
