2
1
5
4
3
8
6
7
1
2
3
4
5
6
7
8
Bottom side of layout
Shield
Front side
%
%
21
&" #"! !$! #
(98/12/10)
ST7 ”Console” (tty00) RS232–Connector
Figure 12: Console Connector at CCU, MINI D, 8 pin, female
Pin # Signal
1 DTR
2 CTS
3 TxD
4 GND
5 RxD
6 RTS
7 DSR
8 GND
Fast Ethernet signal assignment at the RJ45–8 connectors
The twisted pair Ethernet requires a category 5 (CAT5) unshielded twisted–pair (UTP),
2–pair cable for a 100BASE–TX network connection or a category 3 (CAT3), or higher
UTP cable for a 10BASE–T network connection.
The standard twisted–pair cable has a straight–through pin to pin connection from plug to
plug.
The star topology of twisted pair Ethernet connecting several Hosts via one Hub requires
a different signal assignment between Hub and Host side.
The CU09/10 provides both assignments at 2 RJ45 sockets which enable it to be con-
nected to other Hosts via an Hub (standard way) or without an Hub (point–to point).
Figure 13: RJ45 Pin numbering
87654321
Category 5 EIA/TIA 568A
Front view
Modular plug
87654321
RJ45 Socket
Figure 14: Fast Ethernet Signal Assignment
Pin # Cable Color
Codes
Connector "FETH
to Hub"
Connector "FETH
to Host"
1 White-Orange TX+ RX+
2 Orange TX- RX-
3 White-Green RX+ TX+
4 Blue NC NC
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