Connector Pinouts

This appendix lists the pinouts of the connectors that connect the port adapters and interface modules to an external network. All pins not specifically listed are not connected.

For processor card cable pinouts, refer to the Processor Installation Guide for your system. The Processor Installation Guide does not apply to the Catalyst 8540 MSR.

This appendix includes the following sections:

Pinouts to RJ-45 Connectors
Pinouts to RJ-48c Connectors
Pinouts for the 96-Pin Molex to 4 Unshielded RJ-45 Connectors
Pinouts for the 96-Pin Molex to 12 Unshielded RJ-45 Connectors

Pinouts to RJ-45 Connectors

The 155-Mbps port adapter with unshielded twisted-pair (UTP) ports supports RJ-45 connectors. Table B-1 lists the signals for RJ-45 cable connectors.

Table B-1: RJ-45 Connector Pinouts

Pin	Signal	Description
1	RXD+	Receive data +
2	RXD-	Receive data -
3	NC	No connection
4	NC	No connection
5	NC	No connection
6	NC	No connection
7	TXD+	Transmit data +
8	TXD-	Transmit data -

Note For additional information, refer to the ATM Forum Physical Medium Specification for 155-Mbps Over Twisted-Pair
Cable publication.

Pinouts to RJ-48c Connectors

The T1, E1, CES T1 and E1 port adapters support RJ-48c connectors. Table B-2 lists the signals for RJ-48c connectors.

Table B-2: RJ-48c Connector Pinouts

Pin	Description
1	Receive ring
2	Receive tip
3	No connection
4	Transmit ring
5	Transmit tip
6	No connection
7	No connection
8	No connection

Pinouts for the 96-Pin Molex to 4 Unshielded RJ-45 Connectors

The 4-port 25-Mbps port adapter supports a 96-pin Molex to 4 unshielded RJ-45 connector. Table B-3 lists the signals for the 96-pin Molex connector.

Note The 4 unshielded RJ-45 connectors do not utilize all 96 pins on the 96-pin Molex connector. Table B-3 does not list the Molex connector pins that are not used.

Table B-3: 96-Pin Molex to 4 Unshielded RJ-45 Connector Pinouts

Signal	Molex Pin No.	RJ-45 Port No.	RJ-45 Pin No.	Description
RXA7	9	1	1	Receive data +
RXB7	10	1	2	Receive data -
GND	11	NC	NC	No connection
GND	12	NC	NC	No connection
TXA7	13	1	7	Transmit data +
TXB7	14	1	8	Transmit data -
GND	15	NC	NC	No connection
GND	16	NC	NC	No connection
RXA6	33	0	1	Receive data +
RXB6	34	0	2	Receive data -
GND	35	NC	NC	No connection
GND	36	NC	NC	No connection
TXA6	37	0	7	Transmit data +
TXB6	38	0	8	Transmit data -
GND	39	NC	NC	No connection
GND	40	NC	NC	No connection
RXA9	65	3	1	Receive data +
RXB9	66	3	2	Receive data -
GND	67	NC	NC	No connection
GND	68	NC	NC	No connection
TXA9	69	3	7	Transmit data +
TXB9	70	3	8	Transmit data -
GND	71	NC	NC	No connection
GND	72	NC	NC	No connection
RXA8	73	2	1	Receive data +
RXB8	74	2	2	Receive data -
GND	75	NC	NC	No connection
GND	76	NC	NC	No connection
TXA8	77	2	7	Transmit data +
TXB8	78	2	8	Transmit data -
GND	79	NC	NC	No connection
GND	80	NC	NC	No connection

Pinouts for the 96-Pin Molex to 12 Unshielded RJ-45 Connectors

The 12-port 25-Mbps port adapter supports a 96-pin Molex to 12 unshielded RJ-45 connector. Table B-4 lists the signals for the 96-pin Molex connector.

Table B-4: 96-Pin Molex to 12 Unshielded RJ-45 Connector Pinouts

Signal	Molex Pin No.	RJ-45 Port No.	RJ-45 Pin No.	Description
RXA3	1	3	1	Receive data +
RXB3	2	3	2	Receive data -
GND	3	NC	NC	No connection
GND	4	NC	NC	No connection
TXA3	5	3	7	Transmit data +
TXB3	6	3	8	Transmit data -
GND	7	NC	NC	No connection
GND	8	NC	NC	No connection
RXA7	9	7	1	Receive data +
RXB7	10	7	2	Receive data -
GND	11	NC	NC	No connection
GND	12	NC	NC	No connection
TXA7	13	7	7	Transmit data +
TXB7	14	7	8	Transmit data -
GND	15	NC	NC	No connection
GND	16	NC	NC	No connection
RXA11	17	11	1	Receive data +
RXB11	18	11	2	Receive data -
GND	19	NC	NC	No connection
GND	20	NC	NC	No connection
TXA11	21	11	7	Transmit data +
TXB11	22	11	8	Transmit data -
GND	23	NC	NC	No connection
GND	24	NC	NC	No connection
RXA10	25	10	1	Receive data +
RXB10	26	10	2	Receive data -
GND	27	NC	NC	No connection
GND	28	NC	NC	No connection
TXA10	29	10	7	Transmit data +
TXB10	30	10	8	Transmit data -
GND	31	NC	NC	No connection
GND	32	NC	NC	No connection
RXA6	33	6	1	Receive data +
RXB6	34	6	2	Receive data -
GND	35	NC	NC	No connection
GND	36	NC	NC	No connection
TXA6	37	6	7	Transmit data +
TXB6	38	6	8	Transmit data -
GND	39	NC	NC	No connection
GND	40	NC	NC	No connection
TXB2	41	2	8	Transmit data -
TXA2	42	2	7	Transmit data +
GND	43	NC	NC	No connection
GND	44	NC	NC	No connection
RXB2	45	2	2	Receive data -
RXA2	46	2	1	Receive data +
GND	47	NC	NC	No connection
RXA6	48	NC	NC	No connection
RXA1	49	1	1	Receive data +
RXB1	50	1	2	Receive data -
GND	51	NC	NC	No connection
GND	52	NC	NC	No connection
TXA1	53	1	7	Transmit data +
TXB1	54	1	8	Transmit data -
GND	55	NC	NC	No connection
GND	56	NC	NC	No connection
RXA4	57	4	1	Receive data +
RXB4	58	4	2	Receive data -
GND	59	NC	NC	No connection
GND	60	NC	NC	No connection
TXA4	61	4	7	Transmit data +
TXB4	62	4	8	Transmit data -
GND	63	NC	NC	No connection
GND	64	NC	NC	No connection
RXA9	65	9	1	Receive data +
RXB9	66	9	2	Receive data -
GND	67	NC	NC	No connection
GND	68	NC	NC	No connection
TXA9	69	9	7	Transmit data +
TXB9	70	9	8	Transmit data -
GND	71	NC	NC	No connection
GND	72	NC	NC	No connection
RXA8	73	8	1	Receive data +
RXB8	74	8	2	Receive data -
GND	75	NC	NC	No connection
GND	76	NC	NC	No connection
TXA8	77	8	7	Transmit data +
TXB8	78	8	8	Transmit data -
GND	79	NC	NC	No connection
GND	80	NC	NC	No connection
TXB5	81	5	8	Transmit data -
TXA5	82	5	7	Transmit data +
GND	83	NC	NC	No connection
GND	84	NC	NC	No connection
RXB5	85	5	2	Receive data -
RXA5	86	5	1	Receive data +
GND	87	NC	NC	No connection
GND	88	NC	NC	No connection
TXB0	89	0	8	Transmit data -
TXA0	90	0	7	Transmit data +
GND	91	NC	NC	No connection
GND	92	NC	NC	No connection
RXB0	93	0	2	Receive data -
RXA0	94	0	1	Receive data +
GND	95	NC	NC	No connection
GND	96	NC	NC	No connection

Table of Contents

Connector Pinouts

Pinouts to RJ-45 Connectors

Pinouts to RJ-48c Connectors

Pinouts for the 96-Pin Molex to 4 Unshielded RJ-45 Connectors

Pinouts for the 96-Pin Molex to 12 Unshielded RJ-45 Connectors