NH82801DB S L8DE Intel, NH82801DB S L8DE Datasheet - Page 183
NH82801DB S L8DE
Manufacturer Part Number
NH82801DB S L8DE
Description
Manufacturer
Intel
Datasheet
1.NH82801DB_S_L8DE.pdf
(587 pages)
Specifications of NH82801DB S L8DE
Lead Free Status / RoHS Status
Compliant
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Intel
Context
Q
®
0
0
0
1
1
1
1
1
1
1
1
1
Table 5-66. USB Schedule List Traversal Decision Table
82801DB ICH4 Datasheet
QH.Q
—
—
—
0
x
x
0
x
x
x
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.T
—
—
—
0
0
1
1
0
0
x
x
x
QE.Q
—
—
—
0
0
0
1
0
0
x
x
x
QH
QE
QE.T
—
—
—
0
0
0
1
0
0
1
0
1
QELP
QHLP
TD.Vf
—
x
x
x
0
1
1
x
0
x
0
x
Vf
Q
Q T
TD.Q
—
T
0
x
1
x
0
1
x
x
x
x
x
TD.T
—
TDLP
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 Frame
• 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
Description
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
183
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