Intel 460GX GP Data, 11.2.9.1GP Output

LPC/FWH Interface Configuration

Bit	GPIO	Bit	GPIO
25	GPIO[19]	5	GPIO[5]
24	GPIO[18]	4	GPIO[4]
23	Reserved	3	GPIO[3]
22	Reserved	2	GPIO[2]
21	Reserved	1	GPIO[1]
20	Reserved	0	GPIO[0]
19	GPIO[13]
18	GPIO[12]
17	GPIO[11]
16	GPIO[10]

11.2.9.1GP Output

	Offset:		00-03h
	Attribute:		Read/Write
	Default Value:		00000000h
	Size:		32 bits
	Bit		Description
	31:29	Reserved.
	28:24	Mux Output: When set to a ‘0’, the muxed GPIO pin is programmed as an input. When set to ‘1’,
		the muxed GPIO pin is programmed as an output. In the GPO mode, this bit cannot be changed
		once the GP Lock bit is set. The setting of this bit only has effect if the muxed GPIO is
		programmed to be a GPIO.
	23:20	Reserved.
	19:16	Mux Output: When set to a ‘0’, the muxed GPIO pin is programmed as an input. When set to ‘1’,
		the muxed GPIO pin is programmed as an output. In the GPO mode, this bit cannot be changed
		once the GP Lock bit is set. The setting of this bit only has effect if the muxed GPIO is
		programmed to be a GPIO.
	15:9	Reserved.
	8:0	Output: When set to a ‘0’, the GPIO pin is programmed as an input. When set to ‘1’, the GPIO pin
		is programmed as an output. This bit cannot be changed once the GP Lock bit is set.
11.2.9.2	GP Data
	Offset:		04-07h
	Attribute:		Read/Write
	Default Value:		00000000h
	Size:		32 bits
	Bit		Description
	31:29	Reserved.
	28:24	Muxed Data: If a data bit is programmed to be an output, then this bit can be updated by software
		to drive a value on the output pin. If the data bit is programmed as an input, then this bit reflects
		the state of the input pin and cannot be updated by software. This bit cannot be changed once the
		GP Lock bit is set. The value of this bit only has meaning if the muxed GPIO is enabled as a GPIO.
	23:20	Reserved.
11-38			Intel® 460GX Chipset Software Developer’s Manual