NH82801FBM S L89K Intel, NH82801FBM S L89K Datasheet - Page 545

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

Specifications of NH82801FBM S L89K

• Lead Free Status / RoHS Status: Compliant

14.2.1.2
14.2.1.3
Intel
®
I/O Controller Hub 6 (ICH6) Family Datasheet
Note: This register is reset by a suspend well reset and not a D3-to-D0 reset or HCRESET.
HCIVERSION—Host Controller Interface Version Number
Register
Offset:
Default Value:
HCSPARAMS—Host Controller Structural Parameters
Offset:
Default Value:
NOTE: This register is writable when the WRT_RDONLY bit is set.
31:24
23:20
19:16
15:12
15:0
11:8
Bit
Bit
7:4
3:0
Host Controller Interface Version Number — RO. This is a two-byte register containing a BCD
encoding of the version number of interface that this host controller interface conforms.
Reserved — RO. Default=0h.
Debug Port Number (DP_N) — RO (special). Hardwired to 1h indicating that the Debug Port is on
the lowest numbered port on the ICH6.
Reserved
Number of Companion Controllers (N_CC) — R/W (special). This field indicates the number of
companion controllers associated with this USB EHCI host controller.
A 0 in this field indicates there are no companion host controllers. Port-ownership hand-off is not
supported. Only high-speed devices are supported on the host controller root ports.
A value of 1 or more in this field indicates there are companion USB UHCI host controller(s). Port-
ownership hand-offs are supported. High, Full- and Low-speed devices are supported on the host
controller root ports.
The ICH6 allows the default value of 4h to be over-written by BIOS. When removing classic
controllers, they should be disabled in the following order: Function 3, Function 2, Function 1, and
Function 0, which correspond to ports 7:6, 5:4, 3:2, and 1:0, respectively.
Number of Ports per Companion Controller (N_PCC) — RO. Hardwired to 2h. This field indicates the
number of ports supported per companion host controller. It is used to indicate the port routing
configuration to system software.
Reserved. These bits are reserved and default to 0.
N_PORTS — R/W (special). This field specifies the number of physical downstream ports
implemented on this host controller. The value of this field determines how many port registers are
addressable in the Operational Register Space. Valid values are in the range of 1h to Fh.
The ICH6 reports 8h by default. However, software may write a value less than 8 for some platform
configurations. A 0 in this field is undefined.
MEM_BASE + 02
0100h
MEM_BASE + 04
00104208h
–
–
03h
07h
Description
Description
Attribute:
Size:
Attribute:
Size:
EHCI Controller Registers (D29:F7)
RO
16 bits
R/W (special), RO
32 bits
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