252
AMD Geode™ SC3200 Processor Data Book
Core Logic Module - SMI Status and ACPI Registers - Function 1
32581C
Offset 14h
GPWIO Control Register 1 (R/W)
Reset Value: 00h
7:4
Reserved.
Must be set to 0.
3
Reserved.
2
GPWIO2_POL.
Select GPWIO2 polarity.
0: Active high
1: Active low
1
GPWIO1_POL.
Select GPWIO1 polarity.
0: Active high
1: Active low
0
GPWIO0_POL.
Select GPWIO0 polarity.
0: Active high
1: Active low
Offset 15h
GPWIO Control Register 2 (R/W)
Reset Value: 00h
7
Reserved.
6
GPWIO_SMIEN2.
Allow GPWIO2 to generate an SMI.
0: Disable. (Default)
1: Enable.
A fixed high-to-low or low-to-high transition (debounce period) of 31 µs exists in order for GPWIO2 to be recognized.
Bit 2 of this register must be set to 0 (input) for GPWIO2 to be able to generate an SMI.
If asserted, this bit overrides the setting of I/O Offset 12h[10] and its status is reported in I/O Offset 00h/
02h[0].
5
GPWIO_SMIEN1.
Allow GPWIO1 to generate an SMI.
0: Disable. (Default)
1: Enable.
See I/O Offset 07h[3] for debounce information.
Bit 1 of this register must be set to 0 (input) for GPWIO1 to be able to generate an SMI.
If asserted, this bit overrides the setting of I/O Offset 12h[9] and its status is reported in I/O Offset 00h/
02h[0].
4
GPWIO_SMIEN0.
Allow GPWIO0 to generate an SMI.
0: Disable. (Default)
1: Enable.
See I/O Offset 07h[3] for debounce information.
Bit 0 of this register must be set to 0 (input) for GPWIO0 to be able to generate an SMI.
If enabled, this bit overrides the setting of I/O Offset 12h[8] and its status is reported in I/O Offset 00h/
02h[0].
3
Reserved.
2
GPWIO2_DIR.
Selects the direction of GPWIO2.
0: Input.
1: Output.
1
GPWIO1_DIR.
Selects the direction of GPWIO1.
0: Input.
1: Output.
0
GPWIO0_DIR.
Selects the direction of the GPWIO0.
0: Input.
1: Output.
Table 6-34. I/O Offset: ACPI Support Registers (Continued)
Bit
Description
Summary of Contents for Geode SC3200
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Page 16: ...16 AMD Geode SC3200 Processor Data Book Overview 32581C...
Page 24: ...24 AMD Geode SC3200 Processor Data Book Architecture Overview 32581C...
Page 350: ...350 AMD Geode SC3200 Processor Data Book Debugging and Monitoring 32581C...
Page 420: ...420 AMD Geode SC3200 Processor Data Book Electrical Specifications 32581C...