FW82801EB Intel, FW82801EB Datasheet - Page 503
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FW82801EB
Manufacturer Part Number
FW82801EB
Description
Manufacturer
Intel
Datasheet
1.FW82801EB.pdf
(671 pages)
Specifications of FW82801EB
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Intel
®
82801EB ICH5 / 82801ER ICH5R Datasheet
Bit
3
2
1
0
Frame List Rollover — R/WC.
0 = No Frame List Index rollover from its maximum value to 0.
1 = The Host Controller sets this bit to a 1 when the Frame List Index (see Section) rolls over from
Port Change Detect — R/WC. This bit is allowed to be maintained in the Auxiliary power well.
Alternatively, it is also acceptable that on a D3 to D0 transition of the EHCI HC device, this bit is
loaded with the OR of all of the PORTSC change bits (including: Force port resume, overcurrent
change, enable/disable change and connect status change). Regardless of the implementation,
when this bit is readable (i.e., in the D0 state), it must provide a valid view of the Port Status registers.
0 = No change bit transition from a 0 to 1 or No Force Port Resume bit transition from 0 to 1 as a
1 = The Host Controller sets this bit to 1 when any port for which the Port Owner bit is set to 0 has a
USB Error Interrupt (USBERRINT) — R/WC.
0 = No error condition.
1 = The Host Controller sets this bit to 1 when completion of a USB transaction results in an error
USB Interrupt (USBINT) — R/WC.
0 = No completion of a USB transaction whose Transfer Descriptor had its IOC bit set. No short
1 = The host controller sets this bit to 1 when the cause of an interrupt is a completion of a USB
its maximum value to 0. Since the Intel
Frame List Index rolls over every time FRNUM13 toggles.
result of a J-K transition detected on a suspended port.
change bit transition from a 0 to 1 or a Force Port Resume bit transition from 0 to 1 as a result of
a J-K transition detected on a suspended port.
condition (e.g., error counter underflow). If the TD on which the error interrupt occurred also had
its IOC bit set, both this bit and Bit 0 are set. See the Enhanced Host Controller Interface
Specification for Universal Serial Bus, Revision 1.0 for a list of the USB errors that will result in
this interrupt being asserted.
packet is detected.
transaction whose Transfer Descriptor had its IOC bit set.
The host controller also sets this bit to 1 when a short packet is detected (actual number of bytes
received was less than the expected number of bytes).
®
Description
ICH5 only supports the 1024-entry Frame List Size, the
EHCI Controller Registers (D29:F7)
503
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