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40G LM4

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40G Base QSFP+ LM4 Optical Transceiver

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6. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 6 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C 2-Wire Serial Address: 1010000x (A0h) QSFP Memory Map

13. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 13 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C Mechanical Drawing Unit: mm

10. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 10 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C Transceiver Block Diagram Pin Assignment QSFP Transceiver Pad Layout Figure 1: 40Gb/s QSFP IR4 Transceiver Block Diagram PIN Array (4ch) Dual-LC Connector DFB Driver Array (4ch) 4-wavelength DFB laser Array (4ch) Optical MUX TIA Array (4ch) Optical DeMUX TX3 TX2 TX1 TX0 RX3 RX2 RX1 RX0 Single Mode Fiber

12. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 12 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C 32 GND Ground 1 33 CML-I Tx3p Transmitter Inverted Data Output 34 CML-I Tx3n Transmitter Non-Inverted Data Output 35 GND Ground 1 36 CML-I Tx1p Transmitter Inverted Data Output 37 CML-I Tx1n Transmitter Non-Inverted Data Output 38 GND Ground 1 Notes: 1. GND is the symbol for single and supply (power) common for QSFP modules, all are common within the QSFP module and all module voltages are referenced to this potential otherwise noted. Connect these directly to the host board signal common ground plane. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V. 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. VccRx, Vcc1 and VccTx may be internally connected within the QSFP transceiver module in any combination. The connector pins are each rated for maximum current of 500mA. Recommended Circuit Recommended Host Board Power Supply Filtering

1. Data Sheet All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 1of 14 Description WST-QSFP+MR4-C is a transceiver module designed for 2km (SMF) / 150m (MMF) optical communication applications. They are compliant with the IEEE 802.3ba 40GBASE-LR4 referred to as LM4. The module converts 4 inputs channels (ch) of 10Gb/s electrical data to 4 CWDM optical signals, and multiplexes them into a single channel for 40Gb/s optical transmission. Reversely, on the receiver side, the module optically de-multiplexes a 40Gb/s input into 4 CWDM channels signals, and converts them to 4 channel output electrical data. The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm as members of the CWDM wavelength grid defined in ITU-T G694.2. It contains a duplex LC connector for the optical interface and a 38-pin connector for the electrical interface. Features:  4 independent full-duplex channels  Up to 11.2Gbps per channel bandwidth  Aggregate bandwidth of > 40Gbps  Duplex LC connector  QSFP MSA compliant RXPX  Maximum Transmission length:  2 km on SMF (G.652); 150m on MMF (OM3)  Single +3.3V power supply operating  IEEE 802.3ba Electrical Interface  Built-in digital diagnostic functions  Temperature range 0°C to 70°C  RoHS-6 Compliant Applications:  Data centers Interconnect  40G Ethernet  Switches and Routers  Infiniband QDR

9. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 9 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C Vol IntL Deassert Time toff_IntL 500 μs toff_IntL 500 μs Time from clear on read3 operation of associated flag until Vout:IntL = Voh. This includes deassert times for Rx LOS, Tx Fault and other flag bits. Rx LOS Assert Time ton_los 100 ms Time from Rx LOS state to Rx LOS bit set and IntL asserted Flag Assert Time ton_flag 200 ms Time from occurrence of condition triggering flag to associated flag bit set and IntL asserted Mask Assert Time ton_mask 100 ms Time from mask bit set4 until associated IntL assertion is inhibited Mask De-assert Time toff_mask 100 ms Time from mask bit cleared4 until associated IntlL operation resumes ModSelL Assert Time ton_ModSelL 100 μs Time from assertion of ModSelL until module responds to data transmission over the 2-wire serial bus ModSelL Deassert Time toff_ModSelL 100 μs Time from deassertion of ModSelL until the module does not respond to data transmission over the 2-wire serial bus Power_over-ride or Power-set Assert Time ton_Pdown 100 ms Time from P_Down bit set 4 until module power consumption enters lower Power Level Power_over-ride or Power-set De-assert Time toff_Pdown 300 ms Time from P_Down bit cleared4 until the module is fully functional3 Notes: 1. Power on is defined as the instant when supply voltages reach and remain at or above the minimum specified value. 2. Fully functional is defined as IntL asserted due to data not ready bit, bit 0 byte 2 de-asserted. 3. Measured from falling clock edge after stop bit of read transaction. 4. Measured from falling clock edge after stop bit of write transaction.

14. Page 14 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C Ordering Information Part No Specification Package Data rate per Lane Laser Optical Power Detector Max. Receive Sensitivity (OMA) Temp Other Application code WST-QSFP+MR4-C QSFP+ 10.3125 Gbps per channel CWDM DFB -7.5~ +3.5 each Channel PIN -10 dBm each Channel 0~70°C DDM RoHS 40G Ethernet Modification History Revision Date Description Originator Review Approved V1.0 21-Jun-2019 New Issue Ivy Chen Wayne Liao Wayne Liao V1.1 06-Nov-2019 Change PN to MR4 Ivy Chen Wayne Liao Wayne Liao All specification data are accurate on the date of publication for product comparisons and ordering information. WaveSplitter Technologies, Inc. reserves the right to change specifications without notice. U.S. Branch 2080 Rancho Higuera Ct. Fremont, CA 94539, USA Tel: 510-651-7800 Fax: 510-651-7822 Taipei Headquarters 16F-5, No. 75, Sec. 1, Xintai 5th Rd., Xizhi Dist., New Taipei City 22101, Taiwan Tel: +886-2-2698-7208 Fax: +886-2-2698-7210 ShenZhen Branch 610#, 6F, No.204 Building, 2nd Industrial zone Nanyou, Nanshan district, Shenzhen, Guangdong China 518054 Tel: +86-755-86265980 Fax: +86 - 755 - 26642741

2. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 2 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C 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 operates from a single +3.3V power supply and 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 obtain digital diagnostic information. Individual channels can be addressed and unused channels can be shut down for maximum design flexibility. WST-QSFP+MR4-C 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. Absolute Maximum Ratings Parameter Symbol Min. Typical Max. Unit Storage Temperature T S -40 +85 °C Supply Voltage V CC T, R -0.5 4 V Relative Humidity RH 0 85 % Recommended Operating Conditions Parameter Symbol Min. Typical Max. Unit Case operating Temperature T C 0 +70 °C Supply Voltage V CCT, R +3.13 3.3 +3.47 V Supply Current I CC 500 mA Power Dissipation PD 3.5 W Data Rate Specifications Data Rate Specifications Symbol Min typ Max Units Ref. Bit Rate per Lane BR 10.313 Bit Error Ratio BER 10-12 Link distance on OM3 d 150 m Link distance on OM4 d 160 m Link distance on SMF d 1000 m

8. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 8 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C tolerance (wavelength Tol.=value/200 in nm) 190 1 Max case temp. Maximum case temperature in degrees C 191 1 CC_BASE Check code for base ID fields (addresses 128-190) Extended ID fields 192-195 4 Options Rate Select, TX Disable, TX Fault, LOS 196-211 16 Vendor SN Serial number: CZYMR00001 (ASCII) 212-219 8 Date Code YYMMDD 20 20 220 1 Diagnostic Monitoring Type Indicates which types of diagnostic monitoring are implemented (if any) in the Module. Bit 1,0 Reserved 221 1 Enhanced Options Indicates which optional enhanced features are implemented in the transceiver. 222 1 Reserved 223 1 CC_EXT Check code for the Extended ID Fields (addresses 192-222) Vendor Specific ID Fields 224-255 32 Vendor Specific EEPROM Page02 is User EEPROM and its format decided by user. The detail description of low memory and page00.page03 upper memory please see SFF-8436 document. Timing for Soft Control and Status Functions Parameter Symbol Max Unit Conditions Initialization Time t_init 2000 ms Time from power on1, hot plug or rising edge of Reset until the module is fully functional2 Reset Init Assert Time t_reset_init 2 μs A Reset is generated by a low level longer than the minimum reset pulse time present on the ResetL pin. Serial Bus Hardware Ready Time t_serial 2000 ms Time from power on1 until module responds to data transmission over the 2-wire serial bus Monitor Data Ready Time t_data 2000 ms Time from power on1 to data not ready, bit 0 of Byte 2, deasserted and IntL asserted Reset Assert Time t_reset 2000 ms Time from rising edge on the ResetL pin until the module is fully functional2 LPMode Assert Time ton_LPMode 100 μs Time from assertion of LPMode (Vin:LPMode =Vih) until module power consumption enters lower Power Level IntL Assert Time ton_IntL 200 ms Time from occurrence of condition triggering IntL until Vout:IntL =

7. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 7 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C Serial ID: Data Fields Address Size (Bytes) Name Description of Base ID Field Base ID fields 128 1 Identifier Identifier Type of serial Module 129 1 Ext. Identifier Extended Identifier of Serial Module 130 1 Connector Code for connector type 131-138 8 Specification compliance Code for electronic compatibility or optical compatibility 139 1 Encoding Code for serial encoding algorithm 140 1 BR, nominal Nominal bit rate, units of 100 MBits/s 141 1 Extended Rate select Compliance Tags for extended rate select compliance 142 1 Length (SMF) Link length supported for SMF fiber in km 143 1 Length (OM3 50um) Link length supported for EBW 50/125um fiber (OM3), units of 2m 144 1 Length (OM2 50um) Link length supported for 50/125um fiber (OM2), units of 1m 145 1 Length (OM1 62.5 um) Link length supported for 62.5/125um fiber (OM1), units of 1m 146 1 Length (Copper) Link length of copper or active cable, units of 1m 147 1 Device tech Device technology 148-163 16 Vendor name WAVESPLITTER (ASCII) 164 1 Extended Module Extended Module codes for InfiniBand 165-167 3 Vendor OUI QSFP+ vendor IEEE company ID 168-183 16 Vendor PN Part number: WST-QSFPmLR4-C (ASCII) 184-185 2 Vendor rev Revision level: 01 (ASCII) 186-187 2 Wavelength or Copper Cable Attenuation Nominal laser wavelength (wavelength=value/20 in nm) 188-189 2 Wavelength Guaranteed range of laser wavelength (+/- value) from nominal wavelength.

5. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 5 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C Diagnostic Monitoring Interface Digital diagnostics monitoring function is available on all QSFP+ IR4. A 2-wire serial interface provides user to contact with module. The structure of the memory is shown in flowing. The memory space is arranged into a lower, single page, address space of 128 bytes and multiple upper address space pages. This structure permits timely access to addresses in the lower page, such as Interrupt Flags and Monitors. Less time critical time entries, such as serial ID information and threshold settings, are available with the Page Select function. The interface address used is A0xh and is mainly used for time critical data like interrupt handling in order to enable a one-time-read for all data related to an interrupt situation. After an interrupt, IntL has been asserted, the host can read out the flag field to determine the affected channel and type of flag. Lower Memory Map (A0h) Address Size (Bytes) Description Type 0 1 Identifier Read-Only 1-2 2 Status Read-Only 3-21 19 Interrupt Flags Read-Only 22-33 12 Module Monitors Read-Only 34-81 48 Channel Monitors Read-Only 82-85 4 Reserved Read-Only 86-97 12 Control Read/Write 98-99 2 Reserved Read/Write 100-106 7 Module and Channel Masks Read/Write 107-118 12 Reserved Read/Write 119-122 4 Reserved Read/Write 123-126 4 Reserved Read/Write 127 1 Page Select Byte Read/Write Upper Memory Map Page 03h Address Size (Bytes) Description Type 128-175 48 Module Thresholds Read-Only 176-223 48 Reserved Read-Only 224-225 2 Reserved Read-Only 226-239 14 Reserved Read/Write 240-241 2 Channel Controls Read/Write 242-253 12 Reserved Read/Write 254-255 2 Reserved Read/Write

3. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 3 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C Electrical Characteristics (T OP = 0 to 70 °C, V CC = 3.135 to 3.465 Volts) Parameter Symbol Min Typ Max Unit Note Data Rate per Channel - 10.3125 11.2 Gbps Power Consumption - 2.5 3.5 W Supply Current Icc 0.75 1.0 A Control I/O Voltage-High VIH 2.0 Vcc V Control I/O Voltage-Low VIL 0 0.7 V Inter-Channel Skew TSK 150 Ps RESETL Duration 10 Us RESETL De-assert time 100 ms Power on Time 100 ms Transmitter Single Ended Output Voltage Tolerance 0.3 4 V 1 Common mode Voltage Tolerance 15 mV Transmit Input Diff Voltage VI 150 1200 mV Transmit Input Diff Impedance ZIN 85 100 115 Data Dependent Input Jitter DDJ 0.2 UI Data Input Total Jitter TJ 0.65 UI Receiver Single Ended Output Voltage Tolerance 0.3 4 V Rx Output Diff Voltage Vo 370 600 950 mV Rx Output Rise and Fall Voltage Tr/Tf 35 ps 1 Total Jitter TJ 0.2 UI Deterministic Jitter DJ 0.65 UI Notes: 1. 20 ~ 80%

11. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 11 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C Pin Logic Symbol Name/Description Ref. 1 GND Ground 1 2 CML-I Tx2n Transmitter Inverted Data Input 3 CML-I Tx2p Transmitter Non-Inverted Data output 4 GND Ground 1 5 CML-I Tx4n Transmitter Inverted Data Output 6 CML-I Tx4p Transmitter Non-Inverted Data Output 7 GND Ground 1 8 LVTTL-I ModSelL Module Select 9 LVTTL-I ResetL Module Reset 10 VccRx +3.3V Power Supply Receiver 2 11 LVCMOS-I/O SCL 2-Wire Serial Interface Clock 12 LVCMOS-I/O SDA 2-Wire Serial Interface Data 13 GND Ground 1 14 CML-O Rx3p Receiver Inverted Data Output 15 CML-O Rx3n Receiver Non-Inverted Data Output 16 GND Ground 1 17 CML-O Rx1p Receiver Inverted Data Output 18 CML-O Rx1n Receiver Non-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 23 GND Ground 1 24 CML-O Rx4n Receiver Inverted Data Output 25 CML-O Rx4p Receiver Non-Inverted Data Output 26 GND Ground 1 27 LVTTL-O ModPrsL Module Present 28 LVTTL-O IntL Interrupt 29 VccTx +3.3V Power Supply Transmitter 2 30 Vcc1 +3.3V Power Supply 2 31 LVTTL-I LPMode Low Power Mode

4. All contents are Copyright © 1996 - 2019 Wavesplitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 4 of 14 Document Number: 95-0283-V1.1 40GBase QSFP+ LM4 Transceivers WST-QSFP+MR4-C Optical Characteristics (T OP = 0 to 70°C, V CC = 3.135 to 3.465 Volts) Parameter Symbol Min Typ Max Unit Ref. Transmitter Wavelength Assignment L0 1264.5 1271 1277.5 nm L1 1284.5 1291 1297.5 nm L2 1304.5 1311 1317.5 nm L3 1324.5 1331 1337.5 nm Side-mode Suppression Ratio SMSR 30 dB Total Average Launch Power P T +8.3 dBm Transmitter Dispersion Penalty, MMF TDP +4.7 dB Transmitter Dispersion Penalty, SMF TDP +2.6 Optical Modulation Amplitude, each Lane,MMF OMA +4.7 Optical Modulation Amplitude, each Lane,SMF OMA -7.5 +3.5 dBm Laser Off Power Per Channel Poff -30 dBm Optical Extinction Ratio ER 3.5 dB Transmitter Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3} {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} Relative Intensity Noise Rin -128 dB/HZ 1 Optical Return Loss Tolerance 12 dB Receiver Damage Threshold THd 3.3 dBm 1 Receiver Sensitivity (OMA), each Lane, MMF R -10 Receiver Sensitivity (OMA), each Lane, SMF R -10 dBm Receiver Power (OMA), each Lane, MMF RXP X 4.8 dB Receiver Power (OMA), each Lane, SMF RXP X 3.3 Receive Electrical 3 dB upper Cut off Frequency, each Lane 12.3 GHz RSSI Accuracy -2 2 dB Receiver Reflectance Rrx -12 dB LOS De-Assert LOS D -13 dBm LOS Assert LOS A -30 dBm LOS Hysteresis LOS H 0.5 dB Note 1: 12dB Reflection

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