EP80579 Datasheet, PDF (994/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
Note:
• When a ‘1’ is present in the Override register, then the classic controller operates
the port regardless of the EHCI port routing logic. The corresponding EHCI port will
always appear disconnected in this mode.
EHCI test modes will not work on a port that has been overridden by this register.
• Port 0 must never be programmed to the Classic USB Override mode. This is
because the Debug Port is used on Port 0 and the two modes conflict with each
other.
Table 26-28. Offset 64h: CUO - Classic USB Override Register
Description: Reset:Suspend well, and not D3-to-D0, HCRESET nor core well.
View: PCI
BAR: Configuration
Bus:Device:Function: 0:29:7
Offset Start: 64h
Offset End: 65h
Size: 16 bit
Default: 0000h
Power Well: Suspend
Bit Range
15 :08
07 :02
01 :1
Bit Acronym
Bit Description
Sticky
Reserved
Reserved
CUSBPO
Reserved. These bits are reserved for future use; Reads
return 0.
Reserved
Classic USB Port Owner: A ‘1’ in a bit position forces the
corresponding USB port to the classic host controller.
Bit Reset
Value
00h
000000b
00b
Bit Access
RW
RW
00
Reserved Reserved
0h
26.2.1.27 Offset 68h: ULSEC - USB 2.0 Legacy Support Extended
Capability Register
Table 26-29. Offset 68h: ULSEC - USB 2.0 Legacy Support Extended Capability Register
(Sheet 1 of 2)
Description: Reset: suspend well, and not D3-to-D0 warm reset nor core well.
View: PCI
BAR: Configuration
Bus:Device:Function: 0:29:7
Offset Start: 68h
Offset End: 6Bh
Size: 32 bit
Default: 00000001h
Power Well: Suspend
Bit Range
31 :25
24
23 :17
Bit Acronym
Bit Description
Sticky
Reserved
HC_OS
Reserved
Reserved. Hardwired to 00h.
Host Controller OS Owned Semaphore: System
software sets this bit to request ownership of the EHCI
controller.
0 = Ownership of the EHCI controller is not obtained.
1 = Ownership is obtained when this bit reads as 1 and
the HC BIOS Owned Semaphore bit reads as clear.
Reserved.
Bit Reset
Value
00h
0h
00h
Bit Access
RW
Intel^® EP80579 Integrated Processor Product Line Datasheet
994
August 2009
Order Number: 320066-003US