Table Of Contents

Connector Pin Assignments

Serial Console-Interface Connector Pin Assignments

Serial Port Connector

Ethernet Connector Pin Assignments

Ethernet Port Connector

Fiber Connector Type

Cable Pin Assignments

Connector Pin Assignments

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This appendix lists the connector pin assignments for the CDEs, and includes the following sections:

•Serial Console-Interface Connector Pin Assignments

•Ethernet Connector Pin Assignments

•Cable Pin Assignments

Serial Console-Interface Connector Pin Assignments

The serial console-interface connector is a 9-pin, RS-232 D-type, DTE connector. A null modem cable is required to connect a workstation running the Linux or Windows operating system. Table B-1 lists the pin assignments for the serial console interface-connector.

Table B-1 RS-232 Connector Pin Assignments 

Description	Pin	I/O	Signal Name
Data carrier detect; input	1	In	DCD
Receive data; input	2	In	RXD
Transmit data; output	3	Out	TXD
Data terminal ready; output	4	Out	DTR
Interface signal ground	5	—	GND
Data set ready; input	6	In	DSR
Ready to send; output	7	Out	RTS
Clear to send; input	8	In	CTS
Ring indicator; input	9	In	RI

Serial Port Connector

The CDEs have one standard serial port connector located on the back of the device.

Figure B-1 shows the pin number assignments for the 9-pin, male D-shell serial port connector on the back of the device. These pin number assignments conform to the industry standard for RS-232 communications.

Figure B-1 Serial Port Connector

Table B-2 provides the RJ-45-to-DB-9 pinout information for the interconnections between the terminal server and a CDE.

Table B-2 RJ-45 Connector to DB-9 Pinout

Signal Name/ Function	RJ-45 Pin	RJ-45	DB-9 Pin	Signal Name/ Function
TXD	6	Yellow	2	RXD
RXD	3	Black	3	TXD
DSR	2	Orange	4	DTR
GND	5	Green	5	GND
DTR	7	Brown	6	DSR
RTS	1	Blue	7	CTS
CTS	8	Slate/Grey	8	RTS
GND	4	Red	—	GND
—	—	White	—	—
—	—	Purple	—	—

Ethernet Connector Pin Assignments

The Ethernet connector is an 8-pin, modular RJ-45 connector. Table B-3 through Table B-5 list the Ethernet connector pin assignments.

Table B-3 Ethernet Connector Pin Assignments for T568A

RJ-45 Pin	Wire Color (T568A)	Wire Diagram (T568A)	10BASE-T 100BASE-T	1000BASE-T Signal
1	White/Green		Transmit+	BI_DA+
2	Green		Transmit-	BI_DA-
3	White/Orange		Receive+	BI_DB+
4	Blue		Unused	BI_DC+
5	White/Blue		Unused	BI_DC-
6	Orange		Receive-	BI_DB-
7	White/Brown		Unused	BI_DD+
8	Brown		Unused	BI_DD-

Table B-4 Ethernet Connector Pin Assignments for T568B 

RJ-45 Pin	Wire Color (T568B)	Wire Diagram (T568B)	10BASE-T 100BASE-T	1000BASE-T Signal
1	White/Orange		Transmit+	BI_DA+
2	Orange		Transmit-	BI_DA-
3	White/Green		Receive+	BI_DB+
4	Blue		Unused	BI_DC+
5	White/Blue		Unused	BI_DC-
6	Green		Receive-	BI_DB-
7	White/Brown		Unused	BI_DD+
8	Brown		Unused	BI_DD-

Table B-5 RJ-45 Crossover Cable Pin Assignments for T568B

RJ-45 Pin End 1	Wire Color	Diagram End 1	RJ-45 Pin End 2
1	White/Orange		3
2	Orange		6
3	White/Green		1
4	Blue		7
5	White/Blue		8
6	Green		2
7	White/Brown		4
8	Brown		5

Ethernet Port Connector

The CDEs come with an integrated dual-port Ethernet controller. This controller provides an interface for connecting to 10-Mbps, 100-Mbps, or 1000-Mbps networks; it provides full-duplex (FDX) capability, which enables simultaneous transmission and reception of data on the Ethernet LAN.

To access the Ethernet port, connect a Category 3, 4, or 5 unshielded twisted-pair (UTP) cable to the RJ-45 connector on the back of the device.

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Note The 100BASE-TX/1000BASE-TX Ethernet standard requires that the cabling in the network be Category 5 or higher.

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Figure B-2 shows the pin number assignments for the Ethernet RJ-45 port.

Figure B-2 RJ-45 Ethernet Port Connector

Fiber Connector Type

The fiber connector type used to connect to the SE dual-fiber NIC cards is the GLC-SX-MM.

Cable Pin Assignments

Figure B-3 through Figure B-5 show the pin assignments for the cable connection for an RS-232 null modem, RJ-45 straight-through cable, and RJ-45 crossover cable, respectively.

Figure B-3 Pin Assignments for RS-232 Null Modem

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Figure B-4 Pin Assignments and Wiring for an RJ-45 Straight-Through Cable

Figure B-5 Pin Assignments and Wiring for an RJ-45 Crossover Cable