FW82801DBM S L6DN Intel, FW82801DBM S L6DN Datasheet - Page 464
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FW82801DBM S L6DN
Manufacturer Part Number
FW82801DBM S L6DN
Description
Manufacturer
Intel
Datasheet
1.FW82801DBM_S_L6DN.pdf
(615 pages)
Specifications of FW82801DBM S L6DN
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EHCI Controller Registers (D29:F7)
12.2.2.7
12.2.2.8
464
ASYNCLISTADDR—Current Asynchronous List Address Register
Offset:
Default Value:
This 32-bit register contains the address of the next asynchronous queue head to be executed. Since
the ICH4 host controller operates in 64-bit mode (as indicated by a one in 64-bit Addressing
Capability field in the HCCPARAMS register), then the most significant 32 bits of every control
data structure address comes from the CTRLDSSEGMENT register. Bits [4:0] of this register
cannot be modified by system software and will always return zeros when read. The memory
structure referenced by this physical memory pointer is assumed to be 32-byte aligned.
CONFIGFLAG—Configure Flag Register
Offset:
Default Value:
This 32-bit register contains the address of the next asynchronous queue head to be executed. Since
the ICH4 host controller operates in 64-bit mode (as indicated by a one in 64-bit Addressing
Capability field in the HCCPARAMS register), then the most significant 32 bits of every control
data structure address comes from the CTRLDSSEGMENT register. Bits [4:0] of this register
cannot be modified by system software and will always return zeros when read. The memory
structure referenced by this physical memory pointer is assumed to be 32-byte aligned.
31:5
31:1
4:0
Bit
Bit
0
Link Pointer Low (LPL) — R/W. These bits correspond to memory address signals [31:5],
respectively. This field may only reference a Queue Head (QH).
Reserved. These bits are reserved and their value has no effect on operation.
Reserved. Read from this field will always return 0.
Configure Flag (CF) — R/W. Host software sets this bit as the last action in its process of
configuring the Host Controller. This bit controls the default port-routing control logic. Bit values and
side-effects are listed below. For operation details, see Chapter 4 of the Enhanced Host Controller
Interface (EHCI) Specification for Universal Serial Bus .
0 = Port routing control logic default-routes each port to the classic host controllers. (Default)
1 = Port routing control logic default-routes all ports to this host controller.
CAPLENGTH + 18
00000000h
CAPLENGTH + 40
00000000h
–
–
1Bh
43h
Description
Description
Attribute:
Size:
Attribute:
Size:
Intel
R/W
32 bits
R/W
32 bits
®
82801DBM ICH4-M Datasheet
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