FW82801BA S L5PN Intel, FW82801BA S L5PN Datasheet - Page 506
FW82801BA S L5PN
Manufacturer Part Number
FW82801BA S L5PN
Description
Manufacturer
Intel
Datasheet
1.FW82801BA_S_L5PN.pdf
(671 pages)
Specifications of FW82801BA S L5PN
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EHCI Controller Registers (D29:F7)
13.2.9
13.2.10
506
CTRLDSSEGMENT—Control Data Structure Segment
Register
Offset:
Default Value:
This 32-bit register corresponds to the most significant address bits [63:32] for all EHCI data
structures. Since the ICH5 hardwires the 64-bit Addressing Capability field in HCCPARAMS to 1,
then this register is used with the link pointers to construct 64-bit addresses to EHCI control data
structures. This register is concatenated with the link pointer from either the
PERIODICLISTBASE, ASYNCLISTADDR, or any control data structure link field to construct a
64-bit address. This register allows the host software to locate all control data structures within the
same 4 GB memory segment.
PERIODICLISTBASE—Periodic Frame List Base Address
Register
Offset:
Default Value:
This 32-bit register contains the beginning address of the Periodic Frame List in the system
memory. Since the ICH5 host controller operates in 64-bit mode (as indicated by the 1 in the 64-bit
Addressing Capability field in the HCCSPARAMS register), then the most significant 32 bits of
every control data structure address comes from the CTRLDSSEGMENT register. HCD loads this
register prior to starting the schedule execution by the Host Controller. The memory structure
referenced by this physical memory pointer is assumed to be 4-Kbyte aligned. The contents of this
register are combined with the Frame Index Register (FRINDEX) to enable the Host Controller to
step through the Periodic Frame List in sequence.
31:12
31:12
11:0
11:0
Bit
Bit
Upper Address[63:44] — RO. Hardwired to 0s. The Intel
addresses up to 16 terabytes (44 bits of address).
Upper Address[43:32] — R/W. This 12-bit field corresponds to address bits 43:32 when forming a
control data structure address.
Base Address (Low) — R/W. These bits correspond to memory address signals [31:12],
respectively.
Reserved. Must be written as 0s. During runtime, the value of these bits are undefined.
CAPLENGTH + 10
00000000h
CAPLENGTH + 14
00000000h
–
–
13h
17h
Description
Intel
Description
Attribute:
Size:
Attribute:
Size:
®
82801EB ICH5 / 82801ER ICH5R Datasheet
®
ICH5 EHC is only capable of generating
R/W
32 bits
R/W, RO
32 bits
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