4 gbe port – Kontron AT8404 User Manual
Page 54
Hardware Description
41
AT8404 User Guide
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3.2.4 GbE Port
The SFP port is connected to the front board's GbE switch. The corresponding interface is identified as 0/22.
The SFPs uplink ports are according the Small Form-factor Pluggable (SFP) Transceiver MultiSource Agree-
ment (MSA), Sept. 14th, 2000. The fabric switch controls the SFPs via an I²C bus. The SFP connectors have the
following pin assignment:
Table 3-24: Fast Ethernet Management (RJ45) LEDs Signification
Speed LED (Yellow)
OFF
10BASE-T
ON
100BASE-T
Status LED (Green)
OFF
Link down
ON
Link up and no activity
BLINK
Link up and activity
Table 3-25: SFP Connectors Pin Assignment
Signal
Contact
Contact
Signal
GND
1
20
GND
TX_FAULT
2
19
TD-
TX_DIS
3
18
TD+
MODDEF2
4
17
GND
MODDEF1
5
16
3.3V TX
MODDEF0
6
15
3.3V RX
R_SEL
7
14
GND
LOS
8
13
RD+
GND
9
12
RD-
GND
10
11
GND
CAUTION
Do not look into the laser beam! The SFP modules are fitted with a class
1 or 1M laser. To avoid possible exposure to hazardous levels of invisi-
ble laser radiation, do not exceed maximum ratings.