40Gb/s QSFP+ SR4 Optical Transceiver Module QSFP-4000-SR4 Product Specification

40Gb/s QSFP+ SR4 Optical Transceiver Module QSFP-4000-SR4 Product Specification
40Gb/s QSFP+ SR4 Optical Transceiver Module
QSFP-4000-SR4
Product Specification
Features

4 independent full-duplex channels

Up to 11.2Gb/s data rate per channel

MTP/MPO optical connector

QSFP+ MSA compliant

Digital diagnostic capabilities

Up to 100m transmission on OM3
multi-mode ribbon fiber

CML compatible electrical I/O

Single +3.3V power supply

Operating case temperature: 0~70oC

XLPPI electric interface

Rack to Rack

Maximum power consumption 1.5W

Data Center

RoHS-6 compliant

Infiniband QDR, DDR and SDR

40G Ethernet
Applications
Part Number Ordering Information
QSFP-4000-SR4
QSFP+ SR4 100m optical transceiver with full real-time digital
diagnostic monitoring and pull tab (MPO connector)
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 1 of 13
Rev.1.2 Apr 30/2014
1. General Description
This product is a parallel 40Gb/s Quad Small Form-factor Pluggable (QSFP+) optical
module. It provides increased port density and total system cost savings. The QSFP+
full-duplex optical module offers 4 independent transmit and receive channels, each
capable of 10Gb/s operation for an aggregate data rate of 40Gb/s on 100 meters of
OM3 multi-mode fiber.
An optical fiber ribbon cable with an MTP/MPO connector can be plugged into the
QSFP+ module receptacle. Proper alignment is ensured by the guide pins inside the
receptacle. The cable usually can not be twisted for proper channel to channel
alignment. Electrical connection is achieved though a z-pluggable 38-pin IPASS®
connector.
The module operates by a single +3.3V power supply. LVCMOS/LVTTL global control
signals, such as Module Present, Reset, Interrupt and Low Power Mode, are available
with the modules. A 2-wire serial interface is available to send and receive more
complex control signals, and to receive digital diagnostic information. Individual
channels can be addressed and unused channels can be shut down for maximum
design flexibility.
The product is designed with form factor, optical/electrical connection and digital
diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA). It has
been designed to meet the harshest external operating conditions including
temperature, humidity and EMI interference. The module offers very high
functionality and feature integration, accessible via a two-wire serial interface.
2. Functional Description
This product converts parallel electrical input signals into parallel optical signals, by a
driven Vertical Cavity Surface Emitting Laser (VCSEL) array. The transmitter module
accepts electrical input signals compatible with Common Mode Logic (CML) levels. All
input data signals are differential and internally terminated. The receiver module
converts parallel optical input signals via a photo detector array into parallel electrical
output signals. The receiver module outputs electrical signals are also voltage
compatible with Common Mode Logic (CML) levels. All data signals are differential
and support a data rates up to 10Gb/s per channel. Figure 1 shows the functional
block diagram of this product.
A single +3.3V power supply is required to power up the module. Both power supply
pins VccTx and VccRx are internally connected and should be applied concurrently. As
per MSA specifications the module offers 7 low speed hardware control pins
(including the 2-wire serial interface): ModSelL, SCL, SDA, ResetL, LPMode, ModPrsL
and IntL.
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 2 of 13
Rev.1.2 Apr 30/2014
Module Select (ModSelL) is an input pin. When held low by the host, the module
responds to 2-wire serial communication commands. The ModSelL allows the use of
multiple QSFP+ modules on a single 2-wire interface bus – individual ModSelL lines
for each QSFP+ module must be used.
Serial Clock (SCL) and Serial Data (SDA) are required for the 2-wire serial bus
communication interface and enable the host to access the QSFP+ memory map.
The ResetL pin enables a complete module reset, returning module settings to their
default state, when a low level on the ResetL pin is held for longer than the minimum
pulse length. During the execution of a reset the host shall disregard all status bits
until the module indicates a completion of the reset interrupt. The module indicates
this by posting an IntL (Interrupt) signal with the Data_Not_Ready bit negated in the
memory map. Note that on power up (including hot insertion) the module should
post this completion of reset interrupt without requiring a reset.
Low Power Mode (LPMode) pin is used to set the maximum power consumption for
the module in order to protect hosts that are not capable of cooling higher power
modules, should such modules be accidentally inserted.
Module Present (ModPrsL) is a signal local to the host board which, in the absence of
a module, is normally pulled up to the host Vcc. When a module is inserted into the
connector, it completes the path to ground though a resistor on the host board and
asserts the signal. ModPrsL then indicates a module is present by setting ModPrsL to
a “Low” state.
Interrupt (IntL) is an output pin. Low indicates a possible module operational fault or
a status critical to the host system. The host identifies the source of the interrupt
using the 2-wire serial interface. The IntL pin is an open collector output and must be
pulled to the Host Vcc voltage on the Host board.
3. Transceiver Block Diagram
Figure 1. Transceiver Block Diagram
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 3 of 13
Rev.1.2 Apr 30/2014
4. Pin Assignment and Pin Description
Figure 2. QSFP+ Transceiver Electrical Pad Layout
5. Pin Definition
PIN
Logic
1
Symbol
Name/Description
Note
GND
Ground
1
2
CML-I
Tx2n
Transmitter Inverted Data Input
3
CML-I
Tx2p
Transmitter Non-Inverted Data output
GND
Ground
4
5
CML-I
Tx4n
Transmitter Inverted Data Input
6
CML-I
Tx4p
Transmitter Non-Inverted Data output
GND
Ground
7
8
LVTLL-I
ModSelL
Module Select
9
LVTLL-I
ResetL
Module Reset
VccRx
+3.3V Power Supply Receiver
10
11
LVCMOS-I/O
SCL
2-Wire Serial Interface Clock
12
LVCMOS-I/O
SDA
2-Wire Serial Interface Data
GND
Ground
13
14
CML-O
Rx3p
Receiver Non-Inverted Data Output
15
CML-O
Rx3n
Receiver Inverted Data Output
GND
Ground
16
1
1
2
1
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 4 of 13
Rev.1.2 Apr 30/2014
17
CML-O
Rx1p
Receiver Non-Inverted Data Output
18
CML-O
Rx1n
Receiver Inverted Data Output
19
GND
Ground
1
20
GND
Ground
1
21
CML-O
Rx2n
Receiver Inverted Data Output
22
CML-O
Rx2p
Receiver Non-Inverted Data Output
GND
Ground
1
1
23
24
CML-O
Rx4n
Receiver Inverted Data Output
25
CML-O
Rx4p
Receiver Non-Inverted Data Output
GND
Ground
26
1
27
LVTTL-O
ModPrsL
Module Present
28
LVTTL-O
IntL
Interrupt
29
VccTx
+3.3 V Power Supply transmitter
2
30
Vcc1
+3.3 V Power Supply
2
LPMode
Low Power Mode
GND
Ground
31
LVTTL-I
32
33
CML-I
Tx3p
Transmitter Non-Inverted Data Input
34
CML-I
Tx3n
Transmitter Inverted Data Output
GND
Ground
35
36
CML-I
Tx1p
Transmitter Non-Inverted Data Input
37
CML-I
Tx1n
Transmitter Inverted Data Output
GND
Ground
38
1
1
1
Notes:
1.
GND is the symbol for signal and supply (power) common for QSFP+ modules.
All are common within the QSFP+ module and all module voltages are referenced
to this potential unless otherwise noted. Connect these directly to the host board
signal common ground plane.
2.
VccRx, Vcc1 and VccTx are the receiver and transmitter power suppliers and shall
be applied concurrently. Recommended host board power supply filtering is
shown in Figure 4 below. Vcc Rx, Vcc1 and Vcc Tx may be internally connected
within the QSFP+ transceiver module in any combination. The connector pins are
each rated for a maximum current of 500mA.
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 5 of 13
Rev.1.2 Apr 30/2014
6. Optical Interface Lanes and Assignment
Figure 3 shows the orientation of the multi-mode fiber facets of the optical
connector. Table 1 provides the lane assignment.
Fiber 12
Fiber 1
Figure 3. Outside View of the QSFP+ Module MPO
receptacle
Table 1: Lane Assignment
Fiber #
Lane
Assignment
1
RX0
2
RX1
3
RX2
4
RX3
5,6,7,8
Not used
9
TX3
10
TX2
11
TX1
12
TX0
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 6 of 13
Rev.1.2 Apr 30/2014
7. Recommended Power Supply Filter
Figure 4. Recommended Power Supply Filter
8. Absolute Maximum Ratings
It has to be noted that the operation in excess of any individual absolute maximum
ratings might cause permanent damage to this module.
Parameter
Symbol
Min
Max
Unit
Storage Temperature
TS
-40
85
degC
Operating Case Temperature
TOP
0
70
degC
Power Supply Voltage
VCC
-0.5
3.6
V
Relative Humidity (non-condensation)
RH
0
85
%
Damage Threshold, each Lane
THd
3.4
Note
dBm
9. Recommended Operating Conditions and Power Supply Requirements
Parameter
Symbol
Min
Operating Case Temperature
TOP
0
Power Supply Voltage
VCC
3.135
Data Rate, each Lane
Typical
Max
70
3.3
3.465
10.3125
11.2
Unit
degC
V
Gb/s
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 7 of 13
Rev.1.2 Apr 30/2014
Control Input Voltage High
2
Vcc
V
Control Input Voltage Low
0
0.8
V
100
m
Link Distance (OM3)
D
10. Electrical Characteristics
The following electrical characteristics are defined over the Recommended Operating
Environment unless otherwise specified.
Parameter
Symbol
Min.
Typical
Power Consumption
Supply Current
Icc
Transceiver Power-on
Initialization Time
Max
Unit
1.5
W
450
mA
2000
ms
Notes
1
Transmitter (each Lane)
Referred
Single-ended Input
Voltage Tolerance (Note
-0.3
4.0
V
2)
15
Voltage Tolerance (RMS)
Differential Input Voltage
Differential Input
Impedance
mV
50
Swing Threshold
Swing
signal
common
AC Common Mode Input
Differential Input Voltage
to TP1
Vin,pp
180
Zin
90
Differential Input Return
Loss
1200
100
110
mVp
LOSA
p
Threshold
mVp
p
Ohm
See IEEE 802.3ba 86A.4.11
dB
J2 Jitter Tolerance
Jt2
0.17
UI
J9 Jitter Tolerance
Jt9
0.29
UI
0.07
UI
10MHz11.1GHz
Data Dependent Pulse
Width Shrinkage
(DDPWS ) Tolerance
Eye Mask Coordinates
{X1, X2
Y1, Y2}
0.11, 0.31
UI
Hit Ratio
95, 350
mV
= 5x10-5
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 8 of 13
Rev.1.2 Apr 30/2014
Receiver (each Lane)
Referred
Single-ended Output
-0.3
Voltage
4.0
7.5
Output Voltage (RMS)
Voltage Swing
Differential Output
Impedance
to signal
common
AC Common Mode
Differential Output
V
Vout,pp
600
Zout
800
90
100
Termination Mismatch at
1MHz
Differential Output Return
Loss
Common Mode Output
Return Loss
mV
mVp
p
110
Ohm
5
%
See IEEE 802.3ba 86A.4.2.1
dB
See IEEE 802.3ba 86A.4.2.2
dB
Output Transition Time
28
ps
J2 Jitter Output
Jo2
0.42
UI
J9 Jitter Output
Jo9
0.65
UI
Eye Mask Coordinates
{X1, X2
Y1, Y2}
10MHz11.1GHz
10MHz11.1GHz
20% to
80%
0.29, 0.5
UI
Hit Ratio
150, 425
mV
= 5x10-5
Notes:
1. Power-on Initialization Time is the time from when the power supply voltages
reach and remain above the minimum recommended operating supply voltages
to the time when the module is fully functional.
2. The single ended input voltage tolerance is the allowable range of the
instantaneous input signals
11. Optical Characteristics
Parameter
Symbol
Min.
Typical
Max
Unit
Notes
Transmitter
Center Wavelength
λC
840
850
860
nm
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 9 of 13
Rev.1.2 Apr 30/2014
RMS Spectral Width
Average Optical Power, each
Lane
Optical Modulation Amplitude
(OMA), each Lane
0.5
∆λrms
0.65
nm
PAVG
-7.6
1.0
dBm
1
POMA
-5.6
3.0
dBm
2
Ptx,diff
4.0
dB
PPT
4.0
dBm
Difference in Launch Power
between any Two Lanes
(OMA)
Peak Power, each Lane
Launch Power in OMA minus
Transmitter and Dispersion
Penalty (TDP), each Lane
OMATDP
-6.5
dBm
TDP, each Lane
3.5
3.0
dB
Extinction Ratio
ER
dB
Relative Intensity Noise
RIN
-128
dB/Hz
Optical Return Loss Tolerance
TOL
12
dB
<30% at 4.5um
Transmitter Eye Mask
0.23, 0.34, 0.43, 0.27,
Definition {X1, X2, X3, Y1, Y2,
0.35, 0.4
Y3}
Transmitter, each Lane
reflection
>86% at 19um
Encircled Flux
Average Launch Power OFF
12dB
Poff
-30
dBm
860
nm
Receiver
Center Wavelength
λC
840
Damage Threshold, each Lane
THd
3.4
Average Power at Receiver
-9.5
Input, each Lane
Receiver Reflectance
Receive Power (OMA), each
Lane
Stressed Receiver Sensitivity
(OMA), each Lane
RR
850
dBm
2.4
dBm
-12
dB
3.0
dBm
-5.4
dBm
3
4
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 10 of 13
Rev.1.2 Apr 30/2014
Receiver Sensitivity (OMA),
each Lane
Peak Power, each Lane
SEN
-7.5
dBm
PPR
4.0
dBm
LOS Assert
LOSA
LOS Deassert
LOSD
LOS Hysteresis
LOSH
-30
dBm
-12
0.5
dBm
dB
Conditions of Stress Receiver Sensitivity Test (Note 5):
Vertical Eye Closure Penalty,
each Lane
Stressed Eye J2 Jitter, each
Lane
Stressed Eye J9 Jitter, each
Lane
OMA of each aggressor lane
1.9
dB
0.3
UI
0.47
UI
-0.4
dBm
Notes:
1. The maximum transmitter average optical power of 1.0 dBm is well within the
guardband of receiver overload specifications of commercially available 10GBASESR SFP+ transceivers offered by ROBOfiber and other vendors.
2. Even if the TDP < 0.9 dB, the OMA min must exceed the minimum value specified
here.
3. The receiver shall be able to tolerate, without damage, continuous exposure to a
modulated optical input signal having this power level on one lane. The receiver
does not have to operate correctly at this input power.
4. Measured with conformance test signal at receiver input for BER = 1x10-12.
5. Vertical eye closure penalty and stressed eye jitter are test conditions for
measuring stressed receiver sensitivity. They are not characteristics of the receiver.
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 11 of 13
Rev.1.2 Apr 30/2014
12. Digital Diagnostic Functions
The following digital diagnostic characteristics are defined over the Recommended
Operating Environment unless otherwise specified. It is compliant to SFF-8436.
Parameter
Temperature monitor
absolute error
Supply voltage
monitor absolute error
Channel RX power
monitor absolute error
Channel Bias current
monitor
Channel TX power
monitor absolute error
Symbol
Min.
Max
Unit
Notes
DMI_Temp
-3
3
degC
DMI _VCC
-0.15
0.15
V
DMI_RX_Ch
-2
2
dB
1
DMI_Ibias_Ch
-10%
10%
mA
Ch1~Ch4
DMI_TX_Ch
-2
2
dB
1
Over operating
temp
Full operating
range
Notes:
1.
Due to measurement accuracy of different multi-mode fibers, there could be an
additional +/-1 dB fluctuation, or a +/- 3 dB total accuracy.
13. Mechanical Dimensions
Figure 5. Mechanical Outline
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 12 of 13
Rev.1.2 Apr 30/2014
14. ESD
This transceiver is specified as ESD threshold 1KV for SFI pins and 2KV for all others
electrical input pins, tested per MIL-STD-883, Method 3015.4 /JESD22-A114-A (HBM).
However, normal ESD precautions are still required during the handling of this
module. This transceiver is shipped in ESD protective packaging. It should be
removed from the packaging and handled only in an ESD protected environment.
15. Laser Safety
This is a Class 1 Laser Product according to IEC 60825-1:2007. This product complies
with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No.
50, dated (June 24, 2007).
Part Number Ordering Information
QSFP-4000-SR4
QSFP+ SR4 100m optical transceiver with full real-time digital
diagnostic monitoring and pull tab (MPO connector)
E-mail: [email protected]
Robofiber, Inc., 3000F Danville Blvd, Alamo, CA 94507 US, www.robofiber.com, (888) 27-FIBER
Page 13 of 13
Rev.1.2 Apr 30/2014
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