AMD SC2200 manual Bank, 010010 = GPIO18 ball AG1 000011, 010011 = GPIO19 ball C9 000100

Core Logic Module - Bridge, GPIO, and LPC Registers - Function 0 32580B

Table 6-30. F0BAR0+I/O Offset: GPIO Configuration Registers (Continued)

Bit	Description
5:0	Signal Select. Selects the GPIO signal to be configured in the Bank selected via bit 5 setting (i.e., Bank 0 or Bank 1). See
	Table 4-2 on page 76 for GPIO ball muxing options. GPIOs without an associated ball number are not available externally.
	Bank 0
	000000	= GPIO0 (ball D11)	010000	= GPIO16 (ball V31)
	000001	= GPIO1 (balls D10, N30)	010001	= GPIO17 (ball A10)
	000010	= GPIO2	010010	= GPIO18 (ball AG1)
	000011	= GPIO3	010011	= GPIO19 (ball C9)
	000100	= GPIO4	010100	= GPIO20 (balls A9, N31)
	000101	= GPIO5	010101	= GPIO21
	000110	= GPIO6 (ball D28)	010110	= GPIO22
	000111	= GPIO7 (ball C30)	010111	= GPIO23
	001000	= GPIO8 (ball C31)	011000	= GPIO24
	001001	= GPIO9 (ball C28)	011001	= GPIO25
	001010	= GPIO10 (ball B29)	011010	= GPIO26
	001011	= GPIO11 (ball AJ8)	011011	= GPIO27
	001100	= GPIO12 (ball N29)	011100	= GPIO28
	001101	= GPIO13 (ball M29)	011101	= GPIO29
	001110	= GPIO14 (ball D9)	011110	= GPIO30
	001111	= GPIO15 (ball A8)	011111	= GPIO31
	Bank 1
	100000	= GPIO32 (ball M28)	110000	= GPIO48
	100001	= GPIO33 (ball L31)	110001	= GPIO49
	100010	= GPIO34 (ball L30)	110010	= GPIO50
	100011	= GPIO35 (ball L29)	110011	= GPIO51
	100100	= GPIO36 (ball L28)	110100	= GPIO52
	100101	= GPIO37 (ball K31)	110101	= GPIO53
	100110	= GPIO38 (ball K28)	110110	= GPIO54
	100111	= GPIO39 (ball J31)	110111	= GPIO55
	101000	= GPIO40 (ball Y3)	111000	= GPIO56
	101001	= GPIO41 (ball W4)	111001	= GPIO57
	101010	= GPIO42	111010	= GPIO58
	101011	= GPIO43	111011	= GPIO59
	101100	= GPIO44	111100	= GPIO60
	101101	= GPIO45	111101	= GPIO61
	101110	= GPIO46	111110	= GPIO62
	101111	= GPIO47	111111	= GPIO63 (Note)

Note: GPIO63 can be used to generate the PWRBTN# input signal. See PWRBTN# signal description in Section 3.4.15 "Power Management Interface Signals" on page 68.

Offset 24h-27h GPIO Signal Configuration Access Register (R/W) Reset Value: 00000044h

This register is used to indicate configuration for the GPIO signal that is selected in the GPIO Signal Configuration Select Register (above).

Note: PME debouncing, polarity, and edge/level configuration is only applicable on GPIO0-GPIO15 signals (Bank 0 = 00000 to 01111) and on GPIO32-GPIO47 signals (Bank 1 settings of 00000 to 01111). The remaining GPIOs (GPIO16-GPIO31 and GPIO48-GPIO63) can not generate PMEs, therefore these bits have no function and read 0.

31:7 Reserved. Must be set to 0.

6PME Debounce Enable. Enables/disables IRQ debounce (debounce period = 16 ms).

0:Disable.

1:Enable. (Default)

See the note in the description of this register for more information about the default value of this bit.

5PME Polarity. Selects the polarity of the signal that issues a PME from the selected GPIO signal (falling/low or rising/high).

0:Falling edge or low level input. (Default)

1:Rising edge or high level input.

See the note in the description of this register for more information about the default value of this bit.

AMD Geode™ SC2200 Processor Data Book 233