NH82801HBM S LB9A Intel, NH82801HBM S LB9A Datasheet - Page 582
NH82801HBM S LB9A
Manufacturer Part Number
NH82801HBM S LB9A
Description
CONTROLLER HUB, ICH8M, I/O, 82801HBM
Manufacturer
Intel
Datasheet
1.NH82801HBM_S_LB9A.pdf
(890 pages)
Specifications of NH82801HBM S LB9A
Power Dissipation Pd
2.4W
Digital Ic Case Style
BGA
No. Of Pins
676
Pci Bus Type
I/O Controller Hub
Pci Express Base Spec
PCIe 1.1
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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14.2.7
Note:
582
PORTSC[0,1]—Port Status and Control Register
I/O Offset:
Default Value:
For UHCI #1 (D29:F0), this applies to ICH8 USB ports 0 and 1; for UHCI #2 (D29:F1),
this applies to ICH8 USB ports 2 and 3; for UHCI #3 (D29:F2), this applies to ICH8 USB
ports 4 and 5, for UHCI #4 (D26:F0), this applies to ICH8 USB ports 6 and 7, and for
UHCI #5 (D26:F1), this applies to ICH8 USB ports 8 and 9.
After a power-up reset, global reset, or host controller reset, the initial conditions of a
port are: no device connected, Port disabled, and the bus line status is 00 (single-
ended 0).
Port Reset and Enable Sequence
When software wishes to reset a USB device it will assert the Port Reset bit in the Port
Status and Control register. The minimum reset signaling time is 10 mS and is enforced
by software. To complete the reset sequence, software clears the port reset bit. The
Intel UHCI controller must re-detect the port connect after reset signaling is complete
before the controller will allow the port enable bit to de set by software. This time is
approximately 5.3 uS. Software has several possible options to meet the timing
requirement and a partial list is enumerated below:
• Iterate a short wait, setting the port enable bit and reading it back to see if the
• Poll the connect status bit and wait for the hardware to recognize the connect prior
• Wait longer than the hardware detect time after clearing the port reset and prior to
enable bit is set.
to enabling the port.
enabling the port.
Port 0/2/4/6/8: BASE + (10h
Port 1/3/5/7/9: BASE + (12h
0080h
–
–
11h)
13h)
Attribute:R/WC, RO,
R/W (Word writes only)
Size:16 bits
UHCI Controllers Registers
Intel
®
ICH8 Family Datasheet
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