NH82801GHM S L8YR Intel, NH82801GHM S L8YR Datasheet - Page 484
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NH82801GHM S L8YR
Manufacturer Part Number
NH82801GHM S L8YR
Description
Manufacturer
Intel
Datasheet
1.NH82801GHM_S_L8YR.pdf
(848 pages)
Specifications of NH82801GHM S L8YR
Lead Free Status / RoHS Status
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11.2.3
11.2.4
484
USBINTR—USB Interrupt Enable Register
I/O Offset:
Default Value:
This register enables and disables reporting of the corresponding interrupt to the
software. When a bit is set and the corresponding interrupt is active, an interrupt is
generated to the host. Fatal errors (host controller processor error, (D29:F0/F1/F2/
F3:BASE + 02h, bit 4, USBSTS Register) cannot be disabled by the host controller.
Interrupt sources that are disabled in this register still appear in the Status Register to
allow the software to poll for events.
FRNUM—Frame Number Register
I/O Offset:
Default Value:
Bits [10:0] of this register contain the current frame number that is included in the
frame SOF packet. This register reflects the count value of the internal frame number
counter. Bits [9:0] are used to select a particular entry in the Frame List during
scheduled execution. This register is updated at the end of each frame time.
This register must be written as a word. Byte writes are not supported. This register
cannot be written unless the host controller is in the STOPPED state as indicated by the
HCHalted bit (D29:F0/F1/F2/F3:BASE + 02h, bit 5). A write to this register while the
Run/Stop bit is set (D29:F0/F1/F2/F3:BASE + 00h, bit 0) is ignored.
15:11
15:5
10:0
Bit
Bit
4
3
2
1
0
Reserved
Scratchpad (SP) — R/W.
Short Packet Interrupt Enable — R/W.
0 = Disabled.
1 = Enabled.
Interrupt on Complete Enable (IOC) — R/W.
0 = Disabled.
1 = Enabled.
Resume Interrupt Enable — R/W.
0 = Disabled.
1 = Enabled.
Timeout/CRC Interrupt Enable — R/W.
0 = Disabled.
1 = Enabled.
Reserved
Frame List Current Index/Frame Number — R/W. This field provides the frame
number in the SOF Frame. The value in this register increments at the end of each time
frame (approximately every 1 ms). In addition, bits [9:0] are used for the Frame List
current index and correspond to memory address signals [11:2].
Base + (04h
0000h
Base + (06
0000h
–
07h)
–
05h)
Description
Description
Attribute:
Size:
Attribute:
Size:
R/W (Writes must be Word Writes)
16 bits
Intel
R/W
16 bits
UHCI Controllers Registers
®
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