Xilinx introduced their dual 100G Gearbox solution, which features a 28nm Virtex-7 HT FPGA and dual 100G Gearbox intellectual property cores. The new Xilinx solution enables equipment vendors to connect 100 Gbps interfaces with up to two CFP2 optical modules while lowering the overall BOM by reducing chip count and allowing integration with OTN framers as well as 100G bridges into a single chip. The programmability of the Virtex-7 HT FPGA ensures that the equipment vendors can easily keep up with changes in standards that are still evolving in the optical, Ethernet and OTN market space.
Xilinx’s Dual 100G Gearbox implementation enables engineers to convert existing CFP-based line cards to CFP2 so they can take advantage of higher density, lower power and lower cost per line card. This conversion can happen quickly without any changes to the CAUI-based FPGA/ASIC/NPU portion of the card. The solution enables higher density 100G line cards and transmission equipment while lowering overall system power consumption and solution cost through integration.
Xilinx’s dual 100G Gearbox solution includes Gearbox IP cores for dual 100 Gbps channels and the Virtex-7 HT FPGA silicon (7VH290T, 7VH580T or 7VH870T). The solution maps data between the ten and four serial lane interfaces, in both ingress and egress directions. It converts data streams of either CAUI (10x 10.3125G) or OTL4.10 (10x 11.18G) to four lanes of proposed CAUI4 (4x 25.78G) or OTL4.4 (4x 27.95G).
In the case of 100GE, the original twenty PCS lanes are reconstructed internally, allowing per-lane debug, skew insertion, and data manipulation, all under user control. In addition, the Xilinx Dual 100G Gearbox solution integrates advanced debugging capabilities to replicate basic test equipment thereby delivering development cost savings. Unique in the FPGA industry is the dedicated transceivers in the Virtex-7 HT Dual Gearbox devices that are pinned out to connect seamlessly with CFP2 optics without additional vias for crossovers to improve signal integrity.
More info: Xilinx, Inc.