ADLINK Technology SMARC LEC-MTK-I1200 - LAN Ports

LEC-MTK-i1200 User’s Guide SGET SMARC Rev 2.1
Page 35 copyright © 2023 ADLINK Technology Inc.
4.4.5 LAN Ports
4.4.5.1 First LAN (GBE0)
Name
Pin #
Description
I/O
Type
I/O
Level
Power
Domain
PU /
PD
Comments
GBE0_MDI0+
GBE0_MDI0-
GBE0_MDI1+
GBE0_MDI1-
GBE0_MDI2+
GBE0_MDI2-
GBE0_MDI3+
GBE0_MDI3-
P30
P29
P27
P26
P24
P23
P20
P19
Differential Pair Signals for External Transformer
Carrier Series Termination: Magnetics Module
appropriate for 10/100/1000 GBE transceivers
Carrier Parallel Termination:
Secondary side center tap terminations appropriate for
Gigabit Ethernet implementations
I/IO GBE
MDI
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 100 10 _
MDI[0]+/- B1_DA+/- TX+/-
TX+/-
MDI[1]+/- B1_DB+/- RX+/-
RX+/-
MDI[2]+/- B1_DC+/-
MDI[3]+/- B1_DD+/-
GBE0_LINK100#
P21
Link Speed Indication LED for GBE 0 100Mbps
O OD
CMOS
3.3V
Standby
Shall be able to sink 24mA or more Carrier
LED current
GBE0_LINK1000#
P22
Link Speed Indication LED for GBE 0 1000Mbps
O OD
CMOS
3.3V
Standby
Shall be able to sink 24mA or more Carrier
LED current
GBE0_LINK_ACT#
P25
Link / Activity Indication LED Driven low on Link (10, 100
or 1000 mbps) Blinks on Activity
O OD
CMOS
3.3V
Standby
Shall be able to sink 24mA or more Carrier
LED current
GBE0_CTREF
P28
Center-Tap reference voltage for Carrier board Ethernet
magnetic (if required by the Module GBE PHY)
Analog
0 to
3.3V max
Standby
GBE0_SDP
P6
IEEE 1588 Trigger Signal. For hardware implementation
of PTP (precision time protocol)
IO
CMOS
3.3V
Standby
Note 1
: LAN_0 port comes from SoC RGMII interface while LAN_1 port derives from USB (optional)