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麻烦推荐一下带DMA的PCIe Switch型号。
upstream port接CPU 的PCIe Gen4 X16，2个downstream port：GPU( Gen4 X16),FPGA(Gen3 X8)
您好，PCIE Gen4的switch可以看下TMUXHS4412. 这是一款4通道的2选1多路复用器，3.3V或1.8V两种供电电压模式，您看下是否满足您的应用需求。
https://www.ti.com/lit/ds/symlink/tmuxhs4412.pdf
