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2.6 Gb Ethernet
One Gigabit Ethernet port is defined, designated GBE0. The ports
Mbit/sec modes. Magnetics are assumed to be on the Carrier Board. All COM Express Modules
implement at least one Ethernet port on the GBE0 pin slot and this
mode.
2.6.1 Gb Ethernet Signal Definitions
The LAN interface of the COM Express Module consists of 4 pairs of low voltage differential pair signals
'GBE0_MDI0'
designated from
activity indicators. These signals can be used to connect to a 10/100/1000BASE-T RJ45 connector with
integrated or external isolation magnetics on the Carrier Board. The corresponding LAN differential pair
and control signals can be found on rows A and B of the Module's connector.
Table 18 : Gb Ethernet Interface Signal Descriptions
Signal
Pin#
GBE0_MDI0+
A13
GBE0_MDI0-
A12
GBE0_MDI1+
A10
GBE0_MDI1-
A9
GBE0_MDI2+
A7
GBE0_MDI02
A6
'GBE0_MDI3'
(+ and -) to
Description
Media Dependent Interface (MDI) differential pair
0. The MDI can operate in 1000, 100, and
10Mbit/sec modes.
Module has integrated termination.
Carrier Board:
Connect to Magnetics Module MDI0+/-
N/C if not used.
Media Dependent Interface (MDI) differential pair
1. The MDI can operate in 1000, 100, and
10Mbit/sec modes.
Module has integrated termination.
Carrier Board:
Connect to Magnetics Module MDI0+/-
N/C if not used
Media Dependent Interface (MDI) differential pair
2. The MDI can operate in 1000, 100, and
10Mbit/sec modes.
Module has integrated termination.
Carrier Board:
Connect to Magnetics Module MDI2+/-
N/C if not used.
６１
may
operate in 10, 100, or 1000
should
be capable of at least 10/100
(+ and -) plus additional control signals for link
shall
I/O
Note
I/O GBE
I/O GBE
I/O GBE
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