The Previous Chapter

The previous chapter described the function of the Link Training and Status State Machine (LTSSM) of the Physical Layer. It also described the initialization process of the Link from Power-On or Reset, until the full-on L0 state, where traffic on the Link can begin. In addition, the chapter described the lower power management states L0s, L1, L2, L3 and briefly discusses entry and exit procedure to/from these states.