Avnet Qseven MSC Q7-BT - Ethernet

MSC Q7-BT MSC_Q7-BT_User_Manual.pdf 30 / 113
4.2 Ethernet
Based on Intels i210 ethernet controller the module provides a 1Gb Ethernet MDI with twisted pair signals for an external transformer.
The i210 includes a voltage mode line driver so it doesn’t require an analog powered center tap. Therefore Pin 15 GBE_CTREF specified in the
Qseven
®
specification 2.0 is not connected on the module.
The I210 has built in termination resistors. As a result, external termination resistors should not be used.
If only 10/100 Mbit/s is required, the unused MDI Pins can be left unconnected.
Table 4-2 Ethernet Signal Description
Signal
Pin Type
Signal Level
Available
Power
Tolerance
PU/PD
Description
GBE0_MDI0+
GBE0_MDI0-
I/O
Analog
Suspend
3.3V
Media Dependent Interface Differential Pair 0
Used for the receive pair in 10/100 Mbit/s mode
GBE0_MDI1+
GBE0_MDI1-
I/O
Analog
Suspend
3.3V
Media Dependent Interface Differential Pair 1
Used for the transmit pair in 10/100 Mbit/s mode
GBE0_MDI2+
GBE0_MDI2-
I/O
Analog
Suspend
3.3V
Media Dependent Interface Differential Pair 2
This signal pair is only used for 1000Mbit/s mode.
GBE0_MDI3+
GBE0_MDI3-
I/O
Analog
Suspend
3.3V
Media Dependent Interface Differential Pair 3
This signal pair is only used for 1000Mbit/s mode.
GBE0_ACT#
O PP
3.3V CMOS
Suspend
3.3V
Gigabit Ethernet Controller activity indicator, active
low.
GBE0_LINK#
O PP
3.3V CMOS
Suspend
3.3V
Gigabit Ethernet Controller link indicator, active low.
GBE0_LINK100#
O PP
3.3V CMOS
Suspend
3.3V
Gigabit Ethernet Controller 100 Mbit/s link indicator,
active low.
GBE0_LINK1000#
O PP
3.3V CMOS
Suspend
3.3V
Gigabit Ethernet Controller 1000 Mbit/s link
indicator, active low.