12. Signal Descriptions - Kontron ETXexpress-WPM User Manual

12. Signal Descriptions

The ETXexpress-WPM signal descriptions are given in the following tables.
Gigabit Ethernet Pin Type Pwr Rail /
GBE0_MDI[0:3]+ I/O
GBE0_MDI[0:3]- Analog
GBE0_ACT# OD
CMOS
GBE0_LINK# OD
CMOS
GBE0_LINK100# OD
CMOS
GBE0_CTREF REF
ETXexpress-WPM User's Guide
Description
Tolerance
3.3V max Gigabit Ethernet Controller 0: Media Dependent Interface Differential
Suspend 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:
MDI[0]+/-
MDI[1]+/-
MDI[2]+/-
MDI[3]+/-
NOTE: Gigabit Ethernet is not supported on the GBE0 Port. Only
10/100
3.3V / 3.3V Gigabit Ethernet Controller 0 activity indicator, active low.
Suspend
3.3V / 3.3V Gigabit Ethernet Controller 0 link indicator, active low.
Suspend
3.3V / 3.3V Gigabit Ethernet Controller 0 100 Mbit / sec link indicator, active low.
Suspend
GND min Reference voltage for Carrier Board Ethernet channel 0 magnetics
3.3V max center tap. The reference voltage is determined by the requirements of
the module PHY 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 limited to 250 mA or less.
1000BASE-T 100BASE-TX
B1_DA+/- TX+/-
B1_DB+/- RX+/-
B1_DC+/-
B1_DD+/-
10BASE-T
TX+/-
RX+/-
page 75