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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1075630/tusb8020b-q1-does-tusb8020biphprq1-chip-affect-signal-consistency-test-do-you-need-any-configuration
tusb8020biphprq1芯片是否影响信号一致性测试？ 您是否需要任何配置？
是的，集线器在每个端口上都有收发器，这将影响信号质量。
请在此处查看 USB 2.0测试步骤：
https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1031982/faq-tusb8041-tusb8041-how-do-i-force-a-usb-hub-to-send-usb-2-0-high-speed-test-packets-for-eye-diagram-testing
此致，
JMMN
