Tx specs Measuring Tx Signals: "breakout channel" (?) SMA (SubMiniature version A) microwave-type coaxial connectors (?) low-jitter clock source to the device under test (?) "replica channe
对应章节Chapter 13 physical layer electrical link training是以2.5G开始的 一个设备如果支持8G,必须支持2.5G,但非必须支持5G L0 full-on state 差分电路中,保持DC common mode voltage 如果进了electrical idle则会低于一个threshold value TX端