FW82801ER S L742 Intel, FW82801ER S L742 Datasheet - Page 203
FW82801ER S L742
Manufacturer Part Number
FW82801ER S L742
Description
Manufacturer
Intel
Datasheet
1.FW82801ER_S_L742.pdf
(671 pages)
Specifications of FW82801ER S L742
Lead Free Status / RoHS Status
Not Compliant
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Intel
®
Table 91. USB Schedule List Traversal Decision Table
82801EB ICH5 / 82801ER ICH5R Datasheet
Context
Q
0
0
0
1
1
1
1
1
1
1
1
1
Legends:
QH.LP = Queue Head Link Pointer (or Horizontal Link Pointer)
QE.LP = Queue Element Link Pointer (or Vertical Link Pointer)
TD.LP = TD Link Pointer
QH.Q = Q bit in QH
QH.T = T bit in QH
QH.Q
–
–
–
0
x
x
0
x
x
x
1
1
QH.T
–
–
–
0
x
x
0
x
1
1
0
0
QH
QE
QE.Q
–
–
–
0
0
0
x
1
0
x
0
x
QELP
QHLP
QE.T
–
–
–
0
0
0
1
0
0
1
0
1
Vf
TD.Vf
Q
Q T
0
1
1
–
0
0
x
x
x
x
x
x
T
TD.Q
0
x
1
x
0
1
x
–
x
x
x
x
TDLP
TD.T
0
1
0
0
0
–
x
x
x
x
x
x
TD
• Not in Queue — execute TD.
• Use TD.LP to get next TD
• Not in Queue — execute TD. End of
• Not in Queue — execute TD.
• Use TD.LP to get next (QH+QE).
• Set Q Context to 1.
• In Queue. Use QE.LP to get TD.
• Execute TD. Update QE.LP with TD.LP.
• Use QH.LP to get next TD.
• In Queue. Use QE.LP to get TD.
• Execute TD. Update QE.LP with TD.LP.
• Use TD.LP to get next TD.
• In Queue. Use QE.LP to get TD.
• Execute TD. Update QE.LP with TD.LP.
• Use TD.LP to get next (QH+QE).
• In Queue. Empty queue.
• Use QH.LP to get next TD
• In Queue. Use QE.LP to get (QH+QE)
• In Queue. Use QE.LP to get TD.
• Execute TD. Update QE.LP with TD.LP.
• End of Frame
• In Queue. Empty queue. End of Frame
• In Queue. Use QE.LP to get TD.
• Execute TD. Update QE.LP with TD.LP.
• Use QH.LP to get next (QH+QE).
• In Queue. Empty queue.
• Use QH.LP to get next (QH+QE)
Vf Q T
Frame
QE.Q = Q bit in QE
QE.T = T bit in QE
TD. Vf = Vf bit in TD
TD.Q = Q bit in TD
TD. T = T bit in TD
Functional Description
Description
203
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