Table 11 Ethernet Signal Descriptions - Congatec Qseven conga-QMX6 User Manual

Table 11 Ethernet Signal Descriptions
Signal Pin # Description
GBE_MDI0+ 12 Media Dependent Interface (MDI) differential pair 0. The MDI can
GBE_MDI0- 10 operate in 1000, 100, and 10Mbit/sec modes.
This signal pair is used for all modes.
GBE_MDI1+ 11 Media Dependent Interface (MDI) differential pair 1. The MDI can
GBE_MDI1- 9 operate in 1000, 100, and 10Mbit/sec modes.
This signal pair is used for all modes.
GBE_MDI2+ 6 Media Dependent Interface (MDI) differential pair 2. The MDI can
GBE_MDI2- 4 operate in 1000, 100, and 10Mbit/sec modes.
This signal pair is only used for 1000Mbit/sec Gigabit Ethernet mode.
GBE_MDI3+ 5 Media Dependent Interface (MDI) differential pair 3. The MDI can
GBE_MDI3- 3 operate in 1000, 100, and 10Mbit/sec modes.
This signal pair is only used for 1000Mbit/sec Gigabit Ethernet mode.
GBE_CTREF 15 Reference voltage for carrier board Ethernet channel 0 magnetics
center tap. The reference voltage is determined by the requirements
of the module's PHY and may be as low as 0V and as high as 3.3V.
The reference voltage output should be current limited on the module.
In a case in which the reference is shorted to ground, the current must
be limited to 250mA or less.
GBE_LINK# 13 Ethernet controller 0 link indicator, active low.
GBE_LINK100# 7 Ethernet controller 0 100Mbit/sec link indicator, active low.
GBE_LINK1000# 8 Ethernet controller 0 1000Mbit/sec link indicator, active low.
GBE_ACT# 14 Ethernet controller 0 activity indicator, active low.
Note
The theoretical maximum performance of 1 Gbps Ethernet is limited to 470 Mbps (total for Tx and Rx) due to internal bus throughput
limitations. The actual measured performance in optimized environment is up to 400 Mbps. For more information, consult NXP's Errata
ERR004512.
Some signals have special functionality during the reset process. They may bootstrap some basic important functions of the module. For more
information, refer to section 9.1 of this user's guide.
Copyright © 2013 congatec AG
I/O PU/PD Comment
I/O Analog Twisted pair signals for external transformer.
I/O Analog Twisted pair signals for external transformer.
I/O Analog Twisted pair signals for external transformer.
I/O Analog Twisted pair signals for external transformer.
REF Not Supported
O 3.3V PP PD 1k GBE0_LINK# is a bootstrap signal (see note below)
O 3.3V PP PU 4k99 Not Supported. Internally connected to GBE_
2,5VSB ACT#.
GBE0_LINK100# is a bootstrap signal (see note
below)
O 3.3V PP PD 1k Not Supported. Internally connected to GBE_
LINK#.
GBE0_LINK1000# is a bootstrap signal (see note
below)
O 3.3V PP PU 4k99 GBE0_ACT# is a bootstrap signal (see note below)
2,5VSB
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