3 unit computer fast ethernet management interface – Kontron AT8404 User Manual
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Hardware Description
40
AT8404 User Guide
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Connection to the RJ45 can be established with a straight through Ethernet cable and a RJ45 (female) to
SubD (female) adapter if required. The adapter is described in the following table.
3.2.3 Unit Computer Fast Ethernet Management Interface
The Fast Ethernet port of Unit Computer is used as a management interface. The external FE PHY device on the
front board is connected to the top RJ45 connector of the RTM.
The default setting of the AT8404's PHY is to operate in autonegotiation enabled mode, 10/100, Full or Half
duplex. The two LEDs of the RJ 45 connector are controlled by the CPLD.
The connection is established with a straight trough Ethernet cable.
Table 3-22: Serial console terminal cable interface: RJ45 Female to DB9 Female
RJ45 Female
RJ45 Pin
Number
Signal
Connected
Description
DB9 Pin
Number
DB9 Female
Front View
1
RTS
Y
Request To Send
8
Front View
2
DTR
Y
Data Terminal Ready
76
3
TXD
Y
Transmit
2
4
GND
N
Ground
-
5
GND
Y
Ground
5
6
RXD
Y
Receive
3
7
DSR
Y
Data Set Ready
4
8
CTS
N
Clear To Send
7
-
RI
N
Ring Indicator (Not
Used)
9
-
DCD
N
Carrier Detect (Not
Used)
1
Table 3-23: FE Port (RJ45) Pin Assignment
Pin Num-
ber
Signal
RJ45
1
TX+
2
TX-
3
RX+
4
NC
5
NC
6
RX-
7
NC
8
NC