JAJSKW6 december 2020 TMUXHS4412
PRODUCTION DATA
For eight lane PCIe lane muxing application a topology with four TMUXHS4412 devices is illustrated. TMUXHS4412 is a passive mux/demux component that does not provide any signal conditioning. If a specific board implementation has too much loss from CPU to PCIe CEM connectors, a signal conditioning device such as linear redriver might be required for best fidelity of the PCIe link. DS160PR421 is a PCIe 4.0 linear redriver with intergrated mux and DS160PR412 is a PCIe 4.0 linear redriver with integrated demux. Both of these devices are pin-to-pin (p2p) compatible with TMUXHS4412 allowing easy transition if signal conditioing function is needed to extend the PCIe link reach. Figure 8-3 illustrates p2p passive vs redriver option to implement PCIe lane switching.