Kontron ETXexpress-WPM, Руководство пользователя

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ETXexpress-WPM User’s Guide page 75
12. Signal Descriptions
The ETXexpress-WPM signal descriptions are given in the following tables.
Gigabit Ethernet Pin Type Pwr Rail /
Tolerance
Description
GBE0_MDI[0:3]+
GBE0_MDI[0:3]- I/O
Analog 3.3V max
Suspend 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:
1000BASE-T
100BASE-TX 10BASE-T
MDI[0]+/- B1_DA+/- TX+/- TX+/-
MDI[1]+/- B1_DB+/- RX+/- RX+/-
MDI[2]+/- B1_DC+/-
MDI[3]+/- B1_DD+/-
NOTE: Gigabit Ethernet is not supported on the GBE0 Port. Only
10/100
GBE0_ACT# OD
CMOS
3.3V / 3.3V
Suspend Gigabit Ethernet Controller 0 activity indicator, active low.
GBE0_LINK# OD
CMOS
3.3V / 3.3V
Suspend Gigabit Ethernet Controller 0 link indicator, active low.
GBE0_LINK100# OD
CMOS
3.3V / 3.3V
Suspend Gigabit Ethernet Controller 0 100 Mbit / sec link indicator, active low.
GBE0_CTREF REF GND min
3.3V max
Reference voltage for Carrier Board Ethernet channel 0 magnetics
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.