TELEC started technical standards conformity certification and construction design certification services for 6GHz band of Wi-Fi 6E and 5.2GHz band wireless equipment in automobiles.TP-Link releases Wi-Fi 5 mesh system "Deco S7" for 8,000 yen per unit.Successor to the Deco M5Regarding Ethernet or 10GBASE-T, since 2017 [10GBASE-T, finally popular?], we delivered all 11 episodes and 2 extra episodes.However, twisted pair copper wiring Ethernet is up to 10GBASE-T, and 25/40GBASE-T has not yet been put into practical use.The OSFP MSA was launched in November 2016.Founding members are Arista Networks, Acacia Communications, Accelink, Adva Optical Networking, Amphenol, AppliedMicro, Applied Optoelectronics, Barefoot Networks, Broadcom, Cavium, ClariPhy Communications, ColorChip, Coriant, Corning, Dell EMC, Finisar, Foxconn Interconnect Technology, Fujitsu Optical Components, Google, Hewlett Packard Enterprise, Hitachi Cable, Huawei Technologies, Infinera, Innolight, Innovium, Inphi, Intel, Ixia, Juniper Networks, Kaiam, Lorom, Lumentum, Luxtera, Macom, Marvell, Mellanox Technologies, Molex, MultiLane, NeoPhotonics, NEL America, Nokia, Oclaro, PHY-SI, SAE, Senko, Source Photonics, Sumitomo Electric Industries, TE Connectivity, Yamaichi Electric, and 49 companies are gathered here.In the case of the MSA, deliberations are usually carried out in a narrower manner and standardization is completed quickly, but with so many member companies, it seems a little confusing.In fact, Specification Revision 1.0 was released in May 2017, half a year later, and I get the impression that it took a while for something like this.By the way, OSFP stands for Octal Small Form factor Pluggable.By the way, the OSFP module is compatible with both Optical/Copper, but the feature is that the heat sink is integrated on the module, although it is short.The external dimensions (width x depth x height) of 22.58 x 100.40 x 13.00 mm (maximum) are slightly larger than CFP4.By the way, this OSFP is mainly targeted around 400G Ethernet "400GBASE-DR4" "400GBASE-SR8" "400GBASE-SR4.2" "400GBASE-FT4" "400GBASE-FR8" "400GBASE-LR8" as shown in the lower left. andHowever, in addition to 400G Ethernet, it also covers 200GBASE-FR4 x 2 and CWDM4 x 2 (more on this later) as shown in the bottom right.As a signal, 25 Gbps NRZ or 50 Gbps PAM-4 is in mind, but if you want to use it other than 400G, you can use it for 200GBASE-SR4 x 2 as shown below. .Another thing that makes OSFP different from other modules is the power supply.As I wrote earlier, there are 4 Vcc pins and the power supply voltage is 3.3V, but since it allows 1.6A per pin, the maximum configuration is 3.3V x 6.4A ≒ 21.1W, the module introduced so far It is designed to withstand higher power consumption.Power Classes are defined as 1.5/3.5W/7W/8W/10W/12W/14W/>14W, respectively, from 1 to 8.I can't help feeling that it's strangely finely chopped from Class 3, but considering heat dissipation, raising the power consumption frame unnecessarily will only tighten my neck, so if possible, I want to keep it down to 14W. Seem.The last "CDFP" is (I did a little research to find out where "CDFP" came from, but I couldn't find it).In fact, CDFP MSA was formed in September 2013, which is quite old compared to other MSAs.Founder Members are Avago, Brocade, IBM, JDSU, Juniper Networks, Molex, and TE Connectivity.Its purpose is to formulate a 400Gbps pluggable module standard, and in March 2014, it released Mechanical Specification 1.0 as early as possible.However, the fact that the standard was established a long time ago also means that it does not support the latest transmission. 25Gb/s) Pluggable Transceiver".The actual module shape is Style 1 (right) with a short insertion part and Style 2/3 with a much longer insertion part.The size of the insertion part (width x depth x height) is 27.06 x 26.05 x 9.81mm for Style 1 and 46.55mm for Style 2/3.The maximum external size is 29.71 x 90 x 17.47mm, and if you add both, it will be quite large.By the way, the maximum power consumption per card is 6W.For the time being, the Power Class is defined as 1 to 5, and 6W/8W/10W/12W/12W are defined for the entire module.The power supply voltage is still 3.3V, and the power supply pin is 3 pins per card (6 pins for the entire module), so at 12W, 0.6A per pin seems to be a little more leeway.In 2015, TSMC started mass production of the 16FF (16nm FinFET) process.Although this was the most advanced process at the time, it was still common to use 28 to 40 nm for network equipment.For this reason, 12W may have been quite severe.In fact, assuming that the power consumption would increase a little more, it was assumed that a heat sink would be attached to the cage as shown in the figure on the right.By the way, the target of this CDFP, or the virtual enemy, was CFP4 and QSFP28.Looking at the FAQ of CDFP, compared to CFP4 and QSFP28, the advantage was that it can provide a larger bandwidth with far fewer ports.There is nothing wrong with this per se, but is it unfortunate that 400G Ethernet actually began to spread using higher density modules and CDFP didn't get much attention?Also, the CDFP connector was patented by Molex, so it is possible that they didn't like the fact that the connector had to be purchased with the license fee included.Freelance technical writer.His expertise spans a wide range of fields, from CPUs, memories, and chipsets to communications, OS, databases, and medical-related fields.Homepage is http://www.yusuke-ohara.com/Module standards of 'CFP8', 'QSFP-DD', 'OSFP', and 'CDFP' are scattered with '200GBASE-R' of 25 Gbps × 8Module standards of 'CFP8', 'QSFP-DD', 'OSFP', and 'CDFP' are scattered with '200GBASE-R' of 25 Gbps × 8Interconnect and transceiver standards defined in IEEE 802.3ba for 40G/100G40Gbps "QSFP+", 50Gbps "QSFP56", 112Gbps "SFP-DD" "QSFP28"Copyright ©2018 Impress Corporation.