PCIe 5.0 Equalization Modes: Reducing Link Bring-Up Time

By _Synopsys: VIP Experts Blog

October 24, 2019

Billions of internet-connected devices and data-intensive real-time applications are expected to appear on the market in the near future and 100 Gigabit Ethernet (GE) speeds, common in data centers today, will just not be fast enough to handle the bandwidth. Therefore, we’re already anticipating the need for data center operators to migrate their networks from 100 GE to 400 GE, creating demand for faster memory and faster serial bus communications.

PCIe is a high-speed, differential, serial standard for point-to-point communications. Each new generation of the PCIe standard offers additional features and faster data transfer rates than the previous generation. The latest generation, PCIe 5.0, will double the throughput rate of PCIe 4.0. The transfer rate of PCIe 5.0 is 32 gigatransfers per second (GT/s) versus the 16 GT/s supported by PCIe 4.0. With 64 gigabytes per second (GB/s) of unidirectional transfer bandwidth, PCIe 5.0 provides data throughout at 128 GB/s of bidirectional traffic.

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