FW82801ER S L742 Intel, FW82801ER S L742 Datasheet - Page 492
FW82801ER S L742
Manufacturer Part Number
FW82801ER S L742
Description
Manufacturer
Intel
Datasheet
1.FW82801ER_S_L742.pdf
(671 pages)
Specifications of FW82801ER S L742
Lead Free Status / RoHS Status
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EHCI Controller Registers (D29:F7)
13.1.27
492
LEG_EXT_CS—USB EHCI Legacy Support Extended
Control / Status Register (USB EHCI—D29:F7)
Address Offset:
Default Value:
Power Well:
28:22
Bit
31
30
29
21
20
19
18
17
16
15
14
SMI on BAR —R/WC. Software clears this bit by writing a 1 to it.
0 = Base Address Register (BAR) not written.
1 = This bit is set to 1 when the Base Address Register (BAR) is written.
SMI on PCI Command — R/WC. Software clears this bit by writing a 1 to it.
0 = PCI Command (PCICMD) Register not written.
1 = This bit is set to 1 when the PCI Command (PCICMD) Register is written.
SMI on OS Ownership Change — R/WC. Software clears this bit by writing a 1 to it.
0 = No HC OS Owned Semaphore bit change.
1 = This bit is set to 1 when the HC OS Owned Semaphore bit in the LEG_EXT_CAP register
Reserved — RO. Hardwired to 00h
SMI on Async Advance — RO. This bit is a shadow bit of the Interrupt on Async Advance bit in the
USB2.0_STS register.
NOTE: To clear this bit system software must write a 1 to the Interrupt on Async Advance bit in the
SMI on Host System Error — RO. This bit is a shadow bit of Host System Error bit in the
USB2.0_STS register.
NOTE: To clear this bit system software must write a 1 to the Host System Error bit in the
SMI on Frame List Rollover — RO. This bit is a shadow bit of Frame List Rollover bit in the
USB2.0_STS register.
NOTE: To clear this bit system software must write a 1 to the Frame List Rollover bit in the
SMI on Port Change Detect — RO. This bit is a shadow bit of Port Change Detect bit in the
USB2.0_STS register.
NOTE: To clear this bit system software must write a 1 to the Port Change Detect bit in the
SMI on USB Error — RO. This bit is a shadow bit of USB Error Interrupt (USBERRINT) bit in the
USB2.0_STS register.
NOTE: To clear this bit system software must write a 1 to the USB Error Interrupt bit in the
SMI on USB Complete — RO. This bit is a shadow bit of USB Interrupt (USBINT) bit in the
USB2.0_STS register.
NOTE: To clear this bit system software must write a 1 to the USB Interrupt bit in the USB2.0_STS
SMI on BAR Enable — R/W.
0 = Disable
1 = Enable. When this bit is 1 and SMI on BAR is 1, then the host controller will issue an SMI.
SMI on PCI Command Enable — R/W.
0 = Disable
1 = Enable. When this bit is 1 and SMI on PCI Command is 1, then the host controller will issue an
transitions from 1 to 0 or 0 to 1.
SMI.
USB2.0_STS register.
USB2.0_STS register.
USB2.0_STS register.
USB2.0_STS register.
USB2.0_STS register.
register.
Suspend
6C
00000000h
–
6Fh
Description
Intel
Attribute:
Size:
®
82801EB ICH5 / 82801ER ICH5R Datasheet
R/W, R/WC, RO
32 bits
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