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Universal Serial Bus 3.0 Specification, Revision 0.9
xvi
10.3.1.6 DSPORT.Resetting.....................................................10-15
10.3.2 Disconnect Detect Mechanism ...........................................................10-16
10.3.3 Labeling ..............................................................................................10-16
10.4 Downstream Facing Ports Power Management...................................................10-16
10.4.1 Downstream Facing Port PM Timer....................................................10-16
10.4.2 Downstream Facing Port State Descriptions......................................10-18
10.4.2.1 Enabled U0 States ......................................................10-18
10.4.2.2 Attempt U0 – U1 Transition.........................................10-19
10.4.2.3 Attempt U0 – U2 Transition.........................................10-20
10.4.2.4 Link in U1 ....................................................................10-20
10.4.2.5 Link in U2 ....................................................................10-20
10.4.2.6 Link in U3 ....................................................................10-20
10.5 Upstream Facing Port ..........................................................................................10-21
10.5.1 Upstream Facing Port State Descriptions...........................................10-22
10.5.1.1 USPORT.Powered-off.................................................10-22
10.5.1.2 USPORT.Powered-on.................................................10-22
10.5.1.3 USPORT.Training .......................................................10-22
10.5.1.4 USPORT.Connected...................................................10-23
10.5.1.5 USPORT.ERROR .......................................................10-23
10.5.1.6 USPORT.Enabled.......................................................10-23
10.6 Upstream Facing Port Power Management .........................................................10-23
10.7 Hub Header Forwarding and Data Repeater........................................................10-24
10.7.1 Hub Elasticity Buffer ...........................................................................10-24
10.7.2 SKP Ordered Sets ..............................................................................10-25
10.7.3 Interpacket Spacing............................................................................10-25
10.7.4 Header Buffer Architecture .................................................................10-26
10.7.5 Upstream Facing Port TX ...................................................................10-28
10.7.6 Upstream Facing Port TX State Descriptions.....................................10-29
10.7.6.1 TX Idle.........................................................................10-29
10.7.6.2 TX Header...................................................................10-29
10.7.6.3 TX Data.......................................................................10-29
10.7.6.4 TX Data Abort .............................................................10-29
10.7.6.5 TX Link Command ......................................................10-30
10.7.7 Upstream Facing Port RX...................................................................10-30
10.7.8 Upstream Facing Port RX State Descriptions.....................................10-31
10.7.8.1 RX Idle ........................................................................10-31
10.7.8.2 RX Data.......................................................................10-31
10.7.8.3 RX Header ..................................................................10-31
10.7.8.4 Process Header ..........................................................10-32
10.7.8.5 RX Link Command......................................................10-33
10.7.8.6 Process Link Command..............................................10-33
10.7.9 Downstream Facing Port TX...............................................................10-33
10.7.10 Downstream Facing Port TX State Descriptions ................................10-35
10.7.10.1 TX Idle.........................................................................10-35
10.7.10.2 TX Header...................................................................10-35
10.7.10.3 TX Data.......................................................................10-35
10.7.10.4 TX Data Abort .............................................................10-35
10.7.10.5 TX Link Command ......................................................10-36
10.7.11 Downstream Facing Port RX ..............................................................10-36