Gigabit Ethernet - ADLINK Technology COM Express Express-ID7 User Manual

Express-ID7 User's Guide
4.3.2

Gigabit Ethernet

Name Pin # Description
GBE0_MDI0+ A13 Gigabit Ethernet Controller 0: Media Dependent Interface Differential Pairs 0, 1, 2,
GBE0_MDI0- A12 3. The MDI can operate in 1000, 100, and 10Mbit/sec modes. Some pairs are
GBE0_MDI1+ A10 unused in some modes according to the following:
GBE0_MDI1- A9
GBE0_MDI2+ A7
MDI[0]+/-
GBE0_MDI2- A6
MDI[1]+/-
GBE0_MDI3+ A3
MDI[2]+/-
GBE0_MDI3- A2
MDI[3]+/-
GBE0_ACT# B2 Gigabit Ethernet Controller 0 activity indicator, active low.
GBE0_LINK# A8 Gigabit Ethernet Controller 0 link indicator, active low.
GBE0_LINK100# * A4 Gigabit Ethernet Controller 0 100Mbit/sec link indicator, active low.
GBE0_LINK1000# * A5 Gigabit Ethernet Controller 0 1000Mbit/sec link indicator, active low.
Reference voltage for Carrier Board Ethernet channel 1 and 2 magnetics center
tap. The reference voltage is determined by the requirements of the Module PHY
GBE0_CTREF A14 and may be as low as 0V and as high as 3.3V. The reference voltage output shall
be current limited on the Module. In the case in which the reference is shorted to
ground, the current shall be 250 mA or less.
Gigabit Ethernet Controller 0 Software-Definable Pin. Can also be used for
GBE0_SDP A49
IEEE1588 support such as 1pps signal.
Note: GBE0_ACT# and GBE0_LINK# share the same pin from LAN controller.
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1000 100 10____
B1_DA+/- TX+/- TX+/-
B1_DB+/- RX+/- RX+/-
B1_DC+/-
B1_DD+/-
Copyright © 2022 ADLINK Technology, Inc.
I/O PU / PD Comment
I/O Analog Twisted pair signals for
external transformer.
OD 3.3VSB
OD 3.3VSB
OD 3.3VSB
OD 3.3VSB
REF
GND min Not supported
3.3V max
PU 10K Depends on the selection
IO 3.3VSB
3.3VSB of LAN controller
PICMG COM.0 R3.1