MMA4Z00-NS400 400Gb/s Single-port OSFP 400Gb/s Multimode SR4 50m 光模块

1 Introduction 
The NVIDIA MMA4Z00-NS400 is an InfiniBand (IB) and Ethernet (ETH) 400Gb/s, Single-port, OSFP, SR4  multimode parallel transceiver using a single, 4-channel MPO-12/APC optical connector. The Short  Reach 4-channel (SR4) design uses 100G-PAM4 modulation and has a maximum fiber reach of 50- meters using OM4 multimode fiber and assumes two optical patch panels in the link. It has identical  design and internals as the QSFP112 version, only with different connector shells. The transceiver firmware supports both InfiniBand and Ethernet and is automatically enabled  depending on the protocol of the switch attached to. The OSFP shell has a flat-top and utilizes the  riding heat sink (cooling fins) on the ConnectX-7 connector cage.  When linked to 1:2 splitter fiber cable split end has only 2 channels and will activate only 2- channels in the 400G transceiver automatically creating a 200G speed and reducing power. Multimode optics is denoted by a tan-colored pull tab and aqua-colored optical fiber. Green plastic  shell on the MPO-12/APC optical connector denotes Angled Polish Connector and is not compatible  with Ultra-flat Polished Connectors (UPC) (aqua colored). NVIDIA’s Single-port and Twin-port transceiver combinations guarantee optimal operation in NVIDIA  end-to-end systems and customer networking solutions. Rigorous production testing ensures the best  out-of-the-box installation experience, performance, and durability. Flat Top Transceiver  Images are for illustration purposes only. Product labels, colors, and lengths may vary. 

1.1 Key Features

• IB and ETH support • 400G SR4 multimode • 4-channels of 100G-PAM4 electrical and optical modulation • Flat top OSFP connector shell • 850nm VCSEL • Maximum reach: • 30m using OM3 fiber • 50m using OM4 fiber • Single MPO-12/APC optical connector • Operates as a 200Gb/s NDR200 transceiver with 2-fiber splitter ends 3
• 8.5 Watts (max) using 4-channels • 5.5 Watts (max) using 2-channels • Single 3.3V power supply • Class 1 laser safety • Hot pluggable, RoHS compliant • OSFPmsa.org compliant • CMIS 4.0 compliant • Case temperature range 0°C to +70°C

1.2 Applications
• Used in ConnectX-7/OSFP adapters linked to Twin-port transceivers in 2x400G IB/EN switches 45 1. 2. • •

2 Overview

2.1 Connectivity Scenarios The transceiver is inserted into 400Gb/s ConnectX-7/OSFP-based, PCIe-bus network cards. Typically,  the transceiver is linked to a single 800Gb/s Twin-port 2x400G OSFP transceiver (MMA4Z00-NS) in a  Quantum-2 InfiniBand or Spectrum-4 Ethernet switch.  The 400Gb/s transceiver has two speeds  depending on the number of fibers attached: 400Gb/s mode: Using 4-channels straight 50-meter crossover fiber cables (MFP7E10), the  transceiver draws 9 Watts maximum or 8 Watts typical. In this case, the Twin-port 2x400G  transceiver supports two  400G transceivers and two ConnectX-7/OSFP adapter cards. 200Gb/s mode: Using 2-channels and 1:2 splitter 50-meter crossover fiber cables fiber cables  (MFP7E20), the transceiver operates at 200Gb/s (200GbE, NDR200) rate and draws 5 Watts  typical and 6.5 Watts maximum automatically reducing power as only 2 channels are  activated. This case creates links to four 200Gb/s ConnectX-7/OSFP adapter cards. 

2.1.1 Use cases 1. Switch-to-switch at 800Gb/s or to two switches at 400Gb/s A Twin port OSFP transceiver using two, straight fiber cables can support up to two ConnectX-7/ OSFP adapters. Each of the two, 4-channel fiber cables (MFP7E10) can link to the 400G OSFP  MMA4Z00-NS400 transceiver up to 50-meters. ConnectX-7 adapters are offered on both OSFP and QSFP112

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