82801FB Datasheet, PDF (350/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

LPC Interface Bridge Registers (D31:F0)
10.1.14
GPIOBASE—GPIO Base Address Register (LPC I/F —
D31:F0)
Offset Address: 48–4Bh
Default Value: 00000001h
Attribute:
Size:
R/W, RO
32 bit
Bit
Description
31:16
15:6
5:1
0
Reserved. Always 0.
Base Address (BA) — R/W. This field provides the 64 bytes of I/O space for GPIO.
Reserved. Always 0.
RO. Hardwired to 1 to indicate I/O space.
10.1.15
GC—GPIO Control Register (LPC I/F — D31:F0)
Offset Address: 4Ch
Default Value: 00h
Attribute:
R/W
Size:
8 bit
Bit
Description
7:5 Reserved.
GPIO Enable (EN) — R/W. This bit enables/disables decode of the I/O range pointed to by the
GPIO Base Address register (D31:F0:48h) and enables the GPIO function.
4
0 = Disable.
1 = Enable.
3:0 Reserved.
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Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet