78-5102-0126-8 B
Product Data Sheet
3M™ Active Optical
Cable (AOC) Assemblies
for CX4 and QSFP+
Applications
3M Electronic Solutions Division
6801 River Place Blvd.
Austin, TX 78726-9000
www.3Mconnectors.com
Document Number: 78-5102-0126-8 B
Title: Product Data Sheet
Subject:
3M™ Active Optical Cable (AOC) Assemblies for CX4 and QSFP+
Applications
Issue Date: August 10, 2012
Supersedes: Rev A
Page:
1 of 9
Table of Contents
1.0
2.0
3.0
DESCRIPTION..................................................................................................................................................2
AOC BLOCK DIAGRAM .................................................................................................................................2
CONNECTOR PIN ASSIGNMENT .................................................................................................................3
3.1
3.2
3.3
4.0
5.0
6.0
Type Sense (TSense) ..............................................................................................................................3
Output Disable (ODIS
)
...........................................................................................................................3
Fault ........................................................................................................................................................4
LED INDICATIOR SUMMARY ......................................................................................................................4
ABSOLUTE MAXIMUM RATING .................................................................................................................4
RECOMMENDED OPERATING CONDITIONS............................................................................................4
6.1
6.2
6.3
Type Sense (TSense) ..............................................................................................................................4
Output Disable (ODIS
)
...........................................................................................................................4
Fault ........................................................................................................................................................4
7.0
EQUIPMENT CHARACTERISTICS................................................................................................................5
7.1
7.2
7.3
Transmitter and Receiver Electrical Characteristics ...............................................................................5
Optical Characteristics ............................................................................................................................5
Link Performance....................................................................................................................................5
8.0
TESTING...........................................................................................................................................................6
8.1
8.2
8.3
Standards and Regulatory Documents ....................................................................................................6
Functional Performance Criteria .............................................................................................................6
Mechanical Dimensions..........................................................................................................................7
9.0
ORDERING INFORMATION ..........................................................................................................................8
3M Electronic Solutions Division
6801 River Place Blvd.
Austin, TX 78726-9000
www.3Mconnectors.com
©
3M 2012. All Rights Reserved.
Document Number: 78-5102-0126-8 B
Title: Product Data Sheet
Subject:
3M™ Active Optical Cable (AOC) Assemblies for CX4 and QSFP+
Applications
Issue Date: August 10, 2012
Supersedes: Rev B
Page:
2 of 9
1.0
Description
3M’s new CX4-QSFP+ hybrid active optical cable assembly provides up to 5 Gbps per channel transmission over
100 meters of multimode fiber for high-performance computing and other ultra high-throughput networking
environments. The AOC transmits four parallel channels each operating up to 5Gbps. Using industry leading Vcsel
technology and an advanced new light-engine design, the 3M AOC provides exceptional cost/performance value.
Features
•
Low-power
•
Four channels each operating up to 5Gbps
•
Fiber link up to 100m
•
Reliable 850nm Vcsel technology
•
0 to +70 degree Celsius operating temperature range
•
Hot pluggable
•
Bend insensitive fiber
2.0
AOC block diagram
This document summarizes the product performance specifications for the 3M Active Optical Cable Assembly for
CX4 Applications. In the event of performance data conflicts between this specification and any document listed
below, this specification supersedes those documents.
3M Electronic Solutions Division
6801 River Place Blvd.
Austin, TX 78726-9000
www.3Mconnectors.com
©
3M 2012. All Rights Reserved.
Document Number: 78-5102-0126-8 B
Title: Product Data Sheet
Subject:
3M™ Active Optical Cable (AOC) Assemblies for CX4 and QSFP+
Applications
Issue Date: August 10, 2012
Supersedes: Rev B
Page:
3 of 9
3.0
Connector Pin Assignment
In an active optical version of the CX4-QSFP+ cable assembly, certain ground pins are repurposed to provide power
and other control signaling. A CX4-QSFP+ hybrid active optical module requires a 3.3Volt power supply at each
end. On the CX4 side, this voltage supply is provided through pin G8 which is normally a ground pin in an
equivalent copper cable. It is used to provide electrical power to the opto-electronics inside the module. The host
uses G7, Type_Sense (labeled ‘TSense’ in the diagram below), to detect whether the module is an active of passive
variety. If the host detects a ground it automatically assumes the module is passive variety and thus requires no
electrical power. The 5K-Ohm resister allows the host to develop the appropriate voltage across a voltage
comparator circuit to detect that the module is active version and then automatically supplies power to pin G8.
3.1
Type Sense (TSense)
The Type_Sense pin on the module connector is an input pin. It is connected to a 5K-Ohm resister connected to
ground. The host system uses this line to detect whether this is an active optical module and thus provides power via
the voltage input pin G8.
3.2
Output Disable (ODIS)
The ODIS line is an input line to the module; it is used by the host system to switch OFF all the lasers. To turn ON
all the lasers the ODIS line must be kept low by the host system. The lasers turn OFF as soon as the ODIS line is
taken high. The module provides an internal 5K-Ohm pull-up resister to Vcc_In.
3M Electronic Solutions Division
6801 River Place Blvd.
Austin, TX 78726-9000
www.3Mconnectors.com
©
3M 2012. All Rights Reserved.
Document Number: 78-5102-0126-8 B
Title: Product Data Sheet
Subject:
3M™ Active Optical Cable (AOC) Assemblies for CX4 and QSFP+
Applications
Issue Date: August 10, 2012
Supersedes: Rev B
Page:
4 of 9
3.3
Fault
In normal operation, the CX4 module is able to respond to various fault conditions and signal them via the LEDS
and the Fault line on the CX4 connector. The following conditions are recognized:
•
RX loss-of-signal. If the Receiver IC detects loss-of-signal on one or more channels then the module will
turn ON the Red LED and pull the fault line low to ground. When the fault is cleared, the Red LED will
turn OFF and the fault line will be pulled low to ground.
•
TX fault: If the transmitter detects a transmit fault (laser short or open circuit) it will alternately flashes the
Red and Green LEDs and pulls the fault line low. The module must then be power cycled to continue.
Note: If no fault has occurred then the module will release the Fault line (open-collector output). The host
system is required to supply the recommended 5K-Ohm pull-up resister to this output line.
4.0
LED Indicator Summary
Red LED
off
off
on
flashing
Green LED
off
on
on
flashing
Fault line
low
low
Open-collector
Open-collector
Description
Power has not been applied or module is starting up and has not yet
initialized.
Module is operating normally.
Receiver has detected loss of signal on one of more channels
Alternate flashing of Red and Green LEDs means a laser short or
open circuit has been detected.
5.0
Absolute Maximum Rating
Min
-40
5
3.10
0
Parameters
Storage temperature
Relative humidity
Supply voltage
Operating case temperature
Typ
Max
+80
85
3.65
+70
Units
Deg. Celsius
%
V
Deg. Celsius
Note: if product is exposed to conditions beyond the levels indicated, the reliability of the product is likely to
be negatively affected.
6.0
Recommended Operating Conditions
Min
3.15
0
100
120
317
100
5.00
1200
Parameter
Supply voltage, Vcc
Power dissipation
Operating case temperature
Differential impedance input/output
Transmitter differential input voltage
Receiver differential output voltage. peak-to-peak
Differential input and output impedance
Signaling rate/channel, NRZ
Typ
3.3
730
Max
3.57
+70
Units
V
mW
Deg. Celsius
Ohm
mV
mV
Ohm
Gbps
3M Electronic Solutions Division
6801 River Place Blvd.
Austin, TX 78726-9000
www.3Mconnectors.com
©
3M 2012. All Rights Reserved.
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