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Credo Announces PCI Express 6/7, Compute Express Link CXL 3.x Retimers, and AEC PCI Express Product Line at OCP Summit 2024

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Credo Technology Group Holding Ltd (Credo), an innovator in providing secure, high-speed connectivity solutions that deliver improved energy efficiency as data rates and corresponding bandwidth requirements increase throughout the data infrastructure market, is excited to announce the company's first Toucan PCI Express (PCIe) 6, Compute Express Link (CXL) 3.x and Magpie PCIe 7, CXL 4.x retimers and OSFP-XD 16x 64GT/s (1 Tb) PCIe 6/CXL HiWire AECs. Credo will demonstrate the Toucan PCIe 6 retimers and HiWire AECs at the upcoming Open Compute Project (OCP) Summit October 15-17 in Booth 31 and the OCP Innovation Center.

Building on Credo's renowned Serializer/Deserializer (SerDes) technology, the new PCIe 6 and PCIe 7 retimers deliver industry-leading performance and power efficiency while being built on lower cost, more mature process nodes than competing devices. Credo will also include enhanced diagnostic tools, including an embedded logic analyzer and advanced SerDes tools driven by a new GUI designed to enable rapid bring up and debug of customer systems.




"Credo is excited to extend our leadership into a new category of high-speed connectivity with the introduction of the Toucan PCIe 6 and Magpie PCIe 7 retimers," said Phil Kumin of Credo, Associate Vice President of PCIe Product. "By leveraging a mature process technology node, we are well positioned to achieve a cost advantage over our competition. Furthermore, with our SerDes already under evaluation on Tier 1 reference platforms, Credo is well positioned to capitalize on the AI industry's transition to PCIe 7 and take advantage of the throughput improvement."

"As PCIe speeds climb to 64 GT/s and 128 GT/s, retimers are increasingly critical components," said Dr. Debendra Das Sharma, Intel Senior Fellow, Chief Architect of I/O Technology and Standards in the Data Center Platforms and Artificial Intelligence Group at Intel Corporation. "As a leader in PCIe, we commend Credo for their investment in PCIe 6/CXL 3.x and PCIe 7/CXL 4.x retimers and we're excited to collaborate with them on pre-silicon co-simulation."

Credo's Toucan PCIe 6/CXL 3.x retimer, based on the TSMC N7 process technology, will sample in Q4, 2024. Toucan offers a full DSP SerDes to support PAM4 PCIe channels up to 43dB, enhanced diagnostic tools including an embedded logic analyzer, and x16 power of 11 W. Credo's Magpie PCIe 7/CXL 4.x retimer, based on the TSMC N5 process node, will begin sampling in H2 2025.


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Wow. Signal wires, either on PCBs or in cables, are becoming a sigificant consumer of electric power. These retimers are also power amplifiers that compensate for the huge power loss in transmission. Of the 11 W that they consume, about half is probably sent into wires, which is just enough to push the 16 signals 20 or 30 cm forward.
 
Wow. Signal wires, either on PCBs or in cables, are becoming a sigificant consumer of electric power. These retimers are also power amplifiers that compensate for the huge power loss in transmission. Of the 11 W that they consume, about half is probably sent into wires, which is just enough to push the 16 signals 20 or 30 cm forward.
It seems like we're still a few years away from optical interconnects.
 
It seems like we're still a few years away from optical interconnects.
It's a matter of economics. I took QSFP28 transceivers for comparison against PCIe here. A pair of 100 Gbit/s transceivers can be had for 140 € (retail price). They together consume 5 W. 16 lanes of PCIe 5.0 would require 5x as much bandwidth. A pair of hypothetical electro-optical converters using same technology would cost 700 € and consume 25 W, but could carry the signals to a distance of 20-30 metres. At what distance does the price of an active cable surpass 700 €, and how much power does it consume?

(I'm not sure but I assume that the rated speed of optics in Gbit/s is in each direction, just like in PCIe.)
 
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