ADLINK Technology SMARC LEC-MTK-I1200 User Manual page 36

LEC-MTK-i1200 User's Guide
4.4.5.2 Second LAN (GBE1)
Name Pin # Description
GBE1_MDI0+ S17 Differential Pair Signals for External Transformer
GBE1_MDI0- S18 Carrier Series Termination:
GBE1_MDI1+ S20 Magnetics Module appropriate for 10/100/1000 GBE
GBE1_MDI1- S21 transceivers
GBE1_MDI2+ S23 Carrier Parallel Termination:
GBE1_MDI2- S24 Secondary side center tap terminations appropriate for
GBE1_MDI3+ S26 Gigabit Ethernet implementations
GBE1_MDI3- S27
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: Second optional LAN port comes from USB 3.1
Page 36
I/O
Type
I/IO GBE
MDI
O OD
CMOS
O OD
CMOS
O OD
CMOS
Analog
IO
CMOS
copyright © 2023 ADLINK Technology Inc.
I/O Power PU /
Level Domain PD
Standby
3.3V Standby
3.3V Standby
3.3V Standby
0 to 3.3V Standby
max
3.3V Standby
SGET SMARC Rev 2.1
Comments
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+/-
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