40Gbps QSFP SR4 Optical Transceiver Module

40Gbps QSFP SR4 Optical Transceiver Module
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
40Gbps QSFP SR4 Optical Transceiver Module
QSFP-SR4
Features

4 independent full-duplex channels

Up to 11.2Gbps data rate per channel

MTP/MPO optical connector

QSFP MSA compliant

Digital diagnostic capabilities

Capable of over 100m transmission on OM3 multi-mode ribbon fiber

CML compatible electrical I/O

Single +3.3V power supply

Operating case temperature: 0~70C

XLPPI electric interface (with 1.5W Max power)

RoHS-6 compliant
Applications

Rack to rack

Data Center

Infiniband QDR, DDR and SDR

40G Ethernet
1. General Description
The QSFP-SR4 is a parallel 40Gbps 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 10Gbps operation for an aggregate data
rate of 40Gbps over 100 meters of OM3 multi-mode fiber.
1
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
An optical fiber ribbon cable with an MPO/MTPTM 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 zpluggable 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 QSFP-SR4is 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
The QSFP-SR4converts 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 10 Gbps per channel. Figure 1 shows the functional block diagram of the QSFP-SR4QSFP
Transceiver.
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.
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
2
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
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. When “Low”, it 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:QSFP Transceiver Block Diagram
3
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
4. Pin Assignment and Pin Description
Figure 2: QSFP Transceiver Electrical Pad Layout
5. Pin Definitions
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
1
5
CML-I
Tx4n
Transmitter Inverted Data Input
6
CML-I
Tx4p
Transmitter Non-Inverted Data output
GND
Ground
7
1
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
2
4
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
16
www.10gtek.com
GND
Ground
1
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
1
33
CML-I
Tx3p
Transmitter Non-Inverted Data Input
34
CML-I
Tx3n
Transmitter Inverted Data Output
GND
Ground
35
1
36
CML-I
Tx1p
Transmitter Non-Inverted Data Input
37
CML-I
Tx1n
Transmitter Inverted Data Output
GND
Ground
38
1
Note:
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 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.
5
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
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
Table1: lane assignment
Fiber #
Lane Assignment
1
RX0
2
RX1
3
RX2
4
RX3
5
Not used
6
Not used
7
Not used
8
Not used
9
TX3
10
TX2
11
TX1
12
TX0
7. Recommended Power Supply Filter
Figure 4 Recommended Power Supply Filter
6
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
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
Tst
-20
85
degC
Relative Humidit (non-condensation)
RH
-
85
%
Operating Case Temperature
Topc
0
70
degC
Supply Voltage
VCC
-0.5
3.6
V
Voltage on LVTTL Input
Vilvttl
-0.5
VCC+0.5
V
LVTTL Output Current
Lolvttl
-
15
mA
Voltage on Open Collector Output
Voco
0
6
V
Receiver Input Optical Power (Average)
Mip
2
dBm
Note
1
2
Notes:
1. Ta: -10 to 60degC with 1.5m/s airflow with an additional heat sink.
2. Pin Receiver.
9. Recommended Operating Conditions and Supply Requirements
Parameter
Symbol
Min
Max
Unit
Operating Case Temperature
Topc
0
70
degC
Power Supply Voltage
VCC
3.1
3.5
V
Power Supply Current
ICC
-
350
mA
-
1.5
W
Total Power Consumption (XLPPI)
10. Optical Characteristics
Parameter
Symbol
Min.
Typical
Max
Unit
Notes
Transmitter
Center Wavelength
λt
840
850
860
nm
RMS Spectral Width
Pm
-
0.5
0.65
nm
Pavg
-8
-2.5
+1
dBm
Poma
-6
-
+3
dBm
Average Optical Power,
each Lane
Optical Modulation
7
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
Amplitude (OMA)
Peak Power, each Lane
PPt
4
dBm
Launch Power in OMA
minus Transmitter and
-7
Dispersion Penalty (TDP),
-
dB
each Lane
TDP, each Lane
4
dB
Extinction Ratio
ER
3
-
-
dB
Relative Intensity Noise
Rin
-
-
-128
dB/Hz
-
-
12
dB
Optical Return Loss
Tolerance
12dB reflection
>86% at 19um
Encircled Flux
<30% at 4.5um
Transmitter Eye Mask
0.23, 0.34, 0.43, 0.27, 0.33,
Definition {X1, X2, X3, Y1,
0.4
Y2, Y3}
Average Launch Power
Poff
OFF Transmitter, each Lane
-30
dBm
Receiver
Center Wavelength
λr
830
Damage Threshold
THd
2
850
860
nm
dBm
1
Average Power at
Receiver Input, each
-9.9
0
dBm
-12
dB
3
dBm
-5.4
dBm
Lane
Receiver Reflectance
-
-
OMA, each Lane
Stressed Receiver
Sensitivity in OMA, each
-
-
-
-13
Lane
Receiver Sensitivity per
Channel
Peak Power, each Lane
Psens
PPr
dBm
4
dBm
8
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
Receiver Jitter Tolerance
Signal Level in OMA,
-5.4
dBm
each Lane
Los Assert
LosA
-30
-
-
dBm
Los Dessert
LosD
-
-
-14
dBm
Los Hysteresis
LosH
0.5
-
-
dB
Overload
Pin
+1
-
-
dBm
Conditions of Stress Receiver Sensitivity Test2:
Vertical Eye Closure
Penalty, each Lane
Stressed Eye J2 Jitter,
each Lane
Stressed Eye J9 Jitter,
each Lane
2
dB
0.35
UI
0.47
UI
Conditions of Receiver Jitter Tolerance Test:
Jitter Frequency and
(75, 5)
Peak-peak Amplitude
(375,1)
KHz, UI
Notes:
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. Vertical eye closure penalty
and stressed eye jitter are test conditions for measuring stressed receiver sensitivity. They are not characteristics of the
receiver.
11. Electrical Characteristics
The following electrical characteristics are defined over the Recommended Operating Environment unless
otherwise specified.
Parameter
Symbol
Data Rate, each Lane
Power Consumption
Min.
-
Typical
10.3125
-
(XLPPI)
Max
Unit
11.2
Gbps
1.5
W
Notes
9
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
Supply Current
ICC
Control I/O Voltage, High
VIH
Control I/O Voltage, Low
VIL
Inter-Channel Skew
TSK
www.10gtek.com
0.75
1.0
A
2.0
VCC
V
0
0.7
V
150
ps
RESETL Duration
10
us
RESETL De-assert time
100
ms
Power on time
100
ms
Transmitter (XLPPI)
Single Ended Output
Voltage Tolerance
AC Common mode
Voltage Tolerance (RMS)
-0.3
-
4
V
15
-
-
mV
1600
mV
120

Tx Input Diff Voltage
VI
90
Tx Input Diff Impedance
ZIN
80
Differential Input Return
100
See IEEE 802.3ba 86A.4.11
Loss
dB
J2 Jitter Tolerance
Jt2
0.18
UI
J9 Jitter Tolerance
Jt9
0.26
UI
Data Dependent Pulse
DDPW
Width Shrinkage
S
0.07
UI
Eye Mask Coordinates
{X1, X2
0.1,
0.31
to
signal
common
10MHz- 11.1GHz
UI
95, 350
Y1, Y2}
Referred
mV
Receiver (XLPPI)
Single Ended Output
Voltage Tolerance1
AC Common mode
Voltage Tolerance (RMS)
-0.3
-
4
V
-
-
7.5
mV
5
%
Termination Mismatch at
1MHz
Differential Output Return
Loss
Common-mode Output
Referred to TP1 signal
common
See IEEE 802.3ba 86A.4.2.1
dB
10MHz- 11.1GHz
See IEEE 802.3ba 86A.4.2.2
dB
10MHz- 11.1GHz
10
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
Return Loss
Rx Output Diff Voltage
800
mV
Tr/Tf
35
ps
J2 Jitter Tolerance
Jr2
0.46
UI
J9 Jitter Tolerance
Jr9
0.63
UI
Rx Output Rise and Fall
Time
Vo
Eye Mask Coordinates
{X1, X2
Y1, Y2}
600
0.29, 0.5
UI
150, 425
mV
20% to 80%
Notes:
The single ended input voltage tolerance is the allowable range of the instantaneous input signals
12. Mechanical Dimensions
13. 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.
11
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
10Gtek Transceivers Co.,Ltd
Driving Your Next Generation Networks
www.10gtek.com
14. Laser Safety
This is a Class 1 Laser Product according to IEC 60825-1:1993:+A1:1997+A2:2001.
This product
complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated
(July 24, 2007)
Further Information
For further information, please contact info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
Web: www.10gtek.com
12
E-mail:info@10gtek.com
Tel: +86 755 2998 8100
Fax: +86 755 6162 4140
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising