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307013-003 Datasheet, PDF (470/848 Pages) Intel Corporation – Intel I/O Controller Hub 7 | |||
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UHCI Controllers Registers
11.1.1
11.1.2
11.1.3
VIDâVendor Identification Register
(USBâD29:F0/F1/F2/F3)
Address Offset:
Default Value:
00hâ01h
8086h
Attribute:
Size:
RO
16 bits
Bit
Description
15:0 Vendor ID â RO. This is a 16-bit value assigned to Intel
DIDâDevice Identification Register
(USBâD29:F0/F1/F2/F3)
Address Offset:
Default Value:
02hâ03h
UHCI #1 = See bit description
UHCI #2 = See bit description
UHCI #3 = See bit description
UHCI #4 = See bit description
Attribute:
Size:
RO
16 bits
Bit
15:0
Description
Device ID â RO. This is a 16-bit value assigned to the Intel® ICH7 USB universal host
controllers. Refer to the Intel® I/O Controller Hub 7 (ICH7) Family Specification Update
for the value of the Device ID Register.
PCICMDâPCI Command Register (USBâD29:F0/F1/F2/
F3)
Address Offset:
Default Value:
04hâ05h
0000h
Attribute:
Size:
R/W, RO
16 bits
Bit
Description
15:11 Reserved
Interrupt Disable â R/W.
0 = Enable. The function is able to generate its interrupt to the interrupt controller.
10 1 = Disable. The function is not capable of generating interrupts.
NOTE: The corresponding Interrupt Status bit is not affected by the interrupt enable.
9 Fast Back to Back Enable (FBE) â RO. Hardwired to 0.
8 SERR# Enable â RO. Reserved as 0.
7 Wait Cycle Control (WCC) â RO. Hardwired to 0.
6 Parity Error Response (PER) â RO. Hardwired to 0.
5 VGA Palette Snoop (VPS) â RO. Hardwired to 0.
4 Postable Memory Write Enable (PMWE) â RO. Hardwired to 0.
3 Special Cycle Enable (SCE) â RO. Hardwired to 0.
Bus Master Enable (BME) â R/W.
2 0 = Disable
1 = Enable. Intel® ICH7 can act as a master on the PCI bus for USB transfers.
1 Memory Space Enable (MSE) â RO. Hardwired to 0.
I/O Space Enable (IOSE) â R/W. This bit controls access to the I/O space registers.
0 0 = Disable
1 = Enable accesses to the USB I/O registers. The Base Address register for USB should
be programmed before this bit is set.
470
Intel ® ICH7 Family Datasheet
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