Interface Specifications

Connector Pin Number	Symbol	Signal Description
1	GND	Ground
2	Tx2n	Connected to Port 2 lane Rx Inverted Data
3	Tx2p	Connected to Port 2 lane Rx Non-Inverted Data
4	GND	Ground
5	Tx4n	Connected to Port 4 lane Rx Inverted Data
6	Tx4p	Connected to Port 4 lane Rx Non-Inverted Data
7	GND	Ground
8	Mod-SelL	Cable/Module Select
9	ResetL	Cable/Module Reset
10	Vcc Rx	+3.3 V Power supply receiver
11	SCL	2-wire serial interface clock
12	SDA	2-wire serial interface data
13	GND	Ground
14	Rx3p	Connected to Port 3 lane Tx Non-Inverted Data
15	Rx3n	Connected to Port 3 lane Tx Inverted Data
16	GND	Ground
17	Rx1p	Connected to Port 1 lane Tx Non-Inverted Data
18	Rx1n	Connected to Port 1 lane Tx Inverted Data
19	GND	Ground
20	GND	Ground
21	Rx2n	Connected to Port 2 lane Tx Inverted Data
22	Rx2p	Connected to Port 2 lane Tx Non-Inverted Data
23	GND	Ground
24	Rx4n	Connected to Port 4 lane Tx Inverted Data
25	Rx4p	Connected to Port 4 lane Tx Non-Inverted Data
26	GND	Ground
27	ModPrsL	Module/cable Present
28	IntL	Interrupt
29	Vcc Tx	+3.3 V Power supply transmitter
30	Vcc 1	+3.3 V Power Supply
31	LPMode	Low Power Mode
32	GND	Ground
33	Tx3p	Connected to Port 3 lane Rx Non-Inverted Data
34	Tx3n	Connected to Port 3 lane Rx Inverted Data
35	GND	Ground
36	Tx1p	Connected to Port 1 lane Rx Non-Inverted Data
37	Tx1n	Connected to Port 1 lane Rx Inverted Data
38	GND	Ground

Rear View of Module with Pin Placement

Pin	Symbol Name	Description	Note
1	VeeT	Module Transmitter Ground	--
2	TX_Fault	Module Transmitter Fault	a
3	TX_Disable	Transmitter Disable. Turns off transmitter laser output	b
4	SDA	2-wire Serial Interface Data Line	c
5	SCL	2-wire Serial Interface Clock Line	d
6	MOD_ABS	Module Absent. Grounded within the module	d
7	RS0	No connection required	--
8	Rx_LOS	Loss of Signal indication. Logic 0 indicates normal operation.	d
9	RS1	No connection required	--
10	VeeR	Receiver Ground (Common with Transmitter Ground)	a
11	VeeR	Receiver Ground (Common with Transmitter Ground)	a
12	RD-	Receiver Inverted DATA out. AC Coupled	--
13	RD+	Receiver Non-inverted DATA out. AC Coupled	--
14	VeeR	Receiver Ground (Common with Transmitter Ground)	a
15	VccR	Receiver Power Supply	--
16	VccT	Transmitter Power Supply	--
17	VeeT	Transmitter Ground (Common with Receiver Ground)	a
18	TD+	Transmitter Non-Inverted DATA in. AC Coupled	--
19	TD-	Transmitter Inverted DATA in. AC Coupled	--
20	VeeT	Transmitter Ground (Common with Receiver Ground)	a

TFAULT is an open collector/drain output, which should be pulled up with a 4.7k-10k Ohms resistor on the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V. A high output indicates a transmitter fault caused by either the TX bias current or the TX output power exceeding the preset alarm thresholds. A low output indicates normal operation. In the low state, the output is pulled to <0.8V.
Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V
Should be pulled up with 4.7kΩ-10kΩ on host board to a voltage between 2.0V and 3.6V. MOD_ABS pulls line low to indicate module is plugged in.
LOS is open collector output. Should be pulled up with 4.7kΩ-10kΩ on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

The RS232 harness cable (DB9 to RJ45) is supplied with the switch to connect a host PC to the Console RJ45 port of the system.