Microchip has just released two retimer chips, which support the 32gt / s link rate of pci5.0. The models of two xpressconnect chips are rtm-c 8xg5 and rtm-c 16xg5, which can extend the range of PCIe signal and increase the delay of less than 10nm. Obviously, with the increase of the speed of the PCIe, the transmission length of the PCIe signal on the circuit board is also relatively shortened, and the server market has included the PCIe signal repeater for a long time. < / P > < p > for the mainstream application scenarios of pciegen 3, the common transfer driver chip is enough to complete the signal amplification. However, when it comes to PCIe Gen 4 and Gen 5, the requirement for signal relay retimer becomes higher. < / P > < p > without this link, the transmission range of the PCIe Gen 5 signal will be limited to a few inches unless expensive and low loss PCB materials are used. < / P > < p > for large rack servers, you can install a PCIe adapter card on the backplane. The front drive bay requires multiple retimer chips. < / P > < p > in addition, this also helps with CXL 1.1 / 2.0 because it uses the same physical layer signaling as the PCIe Gen 5, but the related use cases are more sensitive to latency. < / P > < p > the first released xpressconnect retimer chip has two versions of 8 / 16 channels, and both support splitting into smaller link widths (such as multiple x1, X2, X4 links). SpaceX beat blue origin and Northrop Grumman to win a $316 million air force contract

By ibmwl