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一直以来也没搞清楚USB 3.2的10Gbps的形式,一直以为是5Gbps*2lane。
翻看了下USB 3.2的协议,终于搞明白了。协议上是这么说的:
3.2.1 Physical LayerThe Gen X physical layer specifications are detailed in Chapter 6. The physical layer defines the PHY portion of a port and physical connection between a downstream facing port(on a host or hub)and the upstream facing port on a device. The Gen X physical connection is comprised of two differential data pairs(one transmit pat and one receive path) for each lane. Dual-lane support(Gen X x 2) is defined to enable two lane operation over the USB Type-C cable and connector.
传输速率分为Gen 1(5Gbps)和Gen 2(10Gbps),在Type-C接口上可以实现2lane同时传输,即Gen 1 x 2(10Gbps)和Gen 2 x 2(20Gbps)。
USB 3.2协议连接如下:
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