NH82801FBM S L89K Intel, NH82801FBM S L89K Datasheet - Page 201

• Manufacturer Part Number: NH82801FBM S L89K
• Manufacturer: Intel

Specifications of NH82801FBM S L89K

• Lead Free Status / RoHS Status: Compliant

5.20
5.20.1
5.20.1.1
5.20.1.2
Intel
Table 5-45. UHCI vs. EHCI
®
I/O Controller Hub 6 (ICH6) Family Datasheet
USB EHCI Host Controller (D29:F7)
The ICH6 contains an Enhanced Host Controller Interface (EHCI) compliant host controller which
supports up to eight USB 2.0 high-speed compliant root ports. USB 2.0 allows data transfers up to
480 Mb/s using the same pins as the eight USB full-speed/low-speed ports. The ICH6 contains
port-routing logic that determines whether a USB port is controlled by one of the UHCI controllers
or by the EHCI controller. USB 2.0 based Debug Port is also implemented in the ICH6.
A summary of the key architectural differences between the USB UHCI host controllers and the
EHCI host controller are shown in
EHC Initialization
The following descriptions step through the expected ICH6 Enhanced Host Controller (EHC)
initialization sequence in chronological order, beginning with a complete power cycle in which the
suspend well and core well have been off.
BIOS Initialization
BIOS performs a number of platform customization steps after the core well has powered up.
Contact your Intel Field Representative for additional ICH6 BIOS information.
Driver Initialization
See Chapter 4 of the Enhanced Host Controller Interface Specification for Universal Serial Bus,
Revision 1.0.
Accessible by
Memory Data Structure
Differential Signaling Voltage
Ports per Controller
Parameter
2
I/O space
Single linked list
3.3 V
Table
USB UHCI
5-45.
Memory Space
Separated in to Periodic and Asynchronous lists
400 mV
8
USB EHCI
Functional Description
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