O'Reilly logo

PCI Express System Architecture by MindShare, Inc, Ravi Budruk, Don Anderson, Tom Shanley

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Link Training and Status State Machine (LTSSM)

General

Figure 14-5 on page 510 illustrates the top-level states of the Link Training and Status State Machine (LTSSM). Each state consists of substates that, taken together, comprise that state. The first LTSSM state entered after exiting Fundamental Reset (Cold or Warm Reset) or Hot Reset is the Detect state.

Figure 14-5. Link Training and Status State Machine (LTSSM)

The LTSSM consists of 11 top-level states: Detect, Polling, Configuration, Recovery, L0, L0s, L1, L2, Hot Reset, Loopback, and Disable. These states can be grouped into five categories:

  1. The Link Training states.

  2. A Link Re-Training State. ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required