Advantech SOM-5992 Design Manual page 64

Signal Pin#
GBE0_MDI3+ A3
GBE0_MDI3- A2
GBE0_CTREF A14
GBE0_LINK# A8
GBE0_LINK100# A4
GBE0_LINK1000# A5
GBE0_ACT# B2
GBE0_SDP A49
GBE0_MDI[0:3]+
GBE0_MDI[0:3]-
Note
Description
Media Dependent Interface (MDI) differential pair
3. The MDI can operate in 1000, 100, and 10Mbit/sec
modes.
Module has integrated termination.
Carrier Board:
Connect to Magnetics Module MDI3+/-
N/C if not used
Reference voltage for Carrier Board Ethernet channel 0
magnetics center tap.
Carrier Board:
0.1uF to ground.
N/C if not used.
Ethernet controller 0 link indicator, active low.
Carrier Board:
N/C if not used.
Ethernet controller 0 100Mbit/sec link indicator, active low.
Carrier Board:
N/C if not used.
Ethernet controller 0 1000Mbit/sec link indicator, active
low.
Carrier Board:
N/C if not used.
Ethernet controller 0 activity indicator, active low.
Carrier Board:
N/C if not used.
Gigabit Ethernet Controller 0 Software-Definable Pins.
Can also be used for IEEE1588 support such as a 1pps
signal. See section 2.6.2 for details.
Gigabit Ethernet Controller 0: Media Dependent Interface
Differential Pairs 0,1,2,3. The MDI can operate in 1000,
100 and 10 Mbit / sec modes. Some pairs are unused in
some modes, per the following:
６２
I/O Note
I/O GBE
REF
1
GND min
3.3V max
O 3.3V
Suspend /
3.3V
OD CMOS
O 3.3V
Suspend /
3.3V
OD CMOS
O 3.3V
Suspend /
3.3V
OD CMO
O 3.3V
Suspend /
3.3V
OD CMO
I/O
3.3V
Suspend /
3.3V
I/O
Analog