400G PAM4 The Wave of the Future. Michael G. Furlong - Senior Director, Product Marketing

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1 400G The Wave of the Future Michael G. Furlong - Senior Director, Product Marketing mfurlong@inphi.com ECOC 2017

2 100G is Ramping in the Cloud 100G Now Shipping (~2H2016) Numerous Market Reports Millions of Ports/Year Driven by Cloud TOR/Leaf/Spine Switching Multiple Suppliers of 100GE Switches Numerous Optical Module Developers Low Cost DAC for Server 100G Breakout Competitive Pricing Network Traffic Continues to Grow Doubling Year/Year Data-intensive Applications Drives the Switch Bandwidth Switch Bandwidth 400G Inphi Proprietary and and Confidential Confidential 2

3 Optics Electrical Interface Switching Solutions Data Center Switch/Optics Transitions 3.2/6.4Tb 6.4/12.8Tb 25Tb+ Public Announcements Others. 128/256x25G NRZ Public Announcements 128/256x50G Others. 256x100G 4x25G (NRZ) 8x50G () nx100g () COLORZ ER4 SR4 PSM4 QSFP28 CWDM4 LR4 CLR4 OSFP DR4 FR4 ZR QSFP-DD LR8 FR8 SR8 Inphi Proprietary and and Confidential Confidential 3

4 Data Center Port Speed Transitions Ethernet Speed Transitions by Lane Speed Lane Speed 10Gbps 25Gbps 50Gbps 100Gbps 1X 10G 25G 50G 100G 2X 50G 100G 200G 4X 40G 100G 200G 400G 8X 400G 800G Server Interface Leaf-Spine Interface Availability Years 3 Years 2 Years Networks Confidential 6 Source: Arista Inphi Proprietary and and Confidential Confidential 4

5 Relevant 400G Standards/MSAs Optical Standards Electrical Standards 802.3bs 400Gbase- Reach Fiber Speed Spec LR8 10km SMF 8x50G 802.3bs LR4 10km SMF 4x100G MSA FR8 2km SMF 8x50G 802.3bs FR4 2km SMF 4x100G MSA DR4 500m P-SMF 4x100G 802.3bs SR8 100m MMF 8x50G 802.3cd 802.3bs - Target Standard Complete Dec GAUI-8 (CDAUI-8) IEEE802.3bs OIF C2C CEI 56G VSR C2M CEI 56G MR 802.3cd 50G DAC / BKPL Data Center Network Topology <10km <2km <500m CFP8 <100m - 102x40x9.5mm - Power < 16W - Routers - Sampling x22.6x9.0mm - Power < 16W - TOR L/S Switches - In Development x18.35x8.5mm - Power < 14W - TOR L/S Switches - In Development - Defines Electrical I/O, Connectors, Thermals, etc. - In Development Inphi Proprietary and and Confidential Confidential 5

6 So Why 50G? 3 Meter DAC Insertion Loss 56Gb 56Gb NRZ Meets the Performance, Power, and Cost objectives for 400G Cloud Data Centers 12.8Terabit Switch Bandwidth Options 1. Double the Number of Existing I/O? 256 I/O -> 512 I/O at 28Gbaud Issues: Die Size, Packaging, Cost 2. Double the Speed on Each I/O 28Gbaud NRZ -> 56Gbaud NRZ Issues: Channel Loss, SerDes Complexity, Cost, Power 3. Advanced Modulation Same Number of I/O Same 28Gbaud Speed Benefits of 50Gbps Use Existing (and Fewer) 28Gb Optics Same Copper Infrastructure 3 Meter DAC Backplanes & Connectors Switches can Mix / Match Cables and Optics up to 100Km in Reach Inphi Proprietary and and Confidential Confidential 6

7 Next Generation 400G Optical Modules OSFP / QSFP-DD / COBO 8x50G H O S T 8x50G Host Interface CTLE Rx EQ IEEE 400GAUI-8 OIF CEI 56G VSR Tx FIR 8:4 Multiplex 8:4 Demultiplex DSP PLL/Clocking Mapping & Pre-Coder Mapping & Pre-Coder DSP Line Interface - Multi-tap FIR - Level Control Control Loops Calibration Algorithms Diagnostics - Multi-tap FFE - Multi-tap DFE - Slicer DAC ADC Clock Recovery 4 4 Linear Driver (x4) TIA (x4) TOSA (x4) ROSA (x4) Opt Mux/ Dmux (FR4/LR4) 4x 100G L I N E 4x 100G REFCLK (If Needed) Power Low-speed CMOS Control Interface uc Power Reg Misc System BER Sweeps Sample Levels Internal Histograms /Eye Diagrams Channel SNR 21dB 0-1 Real Time / Easy Access Non-destructive User Programmable Thresholds -3 Inphi Proprietary and and Confidential Confidential 7

8 DSP Advantages For 400G Amplitude Amplitude Eye Diagram Time / NRZ Eyes Eye Diagram Time Amplitude Amplitude Eye Diagram Time Small ISI Plus Noise Eye Diagram Time More Sensitive to ISI and Noise Versus NRZ has 1/3 rd Eye Opening DSP Equalization High Performance (DFE/FFE) High Number of Taps Proven Algorithms DSP Performance Low Risk Enables Lower Cost Optics Low-power CMOS Process 16nm Scaling 7nm Meets Module Power Targets DSPs are Low Risk and Enable Low Cost Optics Meeting the 400G Module Power Inphi Proprietary and and Confidential Confidential 8

9 Next Generation Cloud 400G Summary Cloud Data Centers Network Traffic is Driving Switch Bandwidth Big Data Movement Video Artificial Intelligence IoT Many Others Switch/Optics Infrastructure Switch Bandwidth is driving 400G Interfaces Next Generation Switches are Coming to Market QSFP28 OSFP QSFP-DD Industry Split on Module Form Factor Optical & Electrical Signaling 56Gbps PAM-4 Required to Achieve 12.8T Switch Bandwidth Optical & Electrical Industry Standards Based on DSP s Are Shipping Today Inphi Proprietary and and Confidential Confidential 9

10 Inphi s Complete Platform to Enable Customer Success High Performance Best Quality Low Power Optical Platform Fast Time-to-market Coherent DSP DSP SiPho or Partner Optics Driver TiA Competitive Cost Dedicated Customer Support Long Reach Inphi Proprietary and and Confidential Confidential 10

11 Live DSP Demonstration at ECOC 2017 Booth #337 Highest Performance 50G DSP 400G QSFP-DD/OSFP Optics 10G-400G Backplane Retimer IEEE FEC/PCS Integrated EML/VCSEL Drivers COLORZ-Lite QSFP Gbps 20km Campus Inphi Proprietary and and Confidential Confidential 11

12 Thank you