CS5530A datasheet(226/259 Pages) AMD

226 / 259 page

226

AMD Geode™ CS5530A Companion Device Data Book

Revision 1.1

ACPI_BASE 0Eh-0Fh

SETUP_IDX — Setup Index Register (R/W)

Reset Value = 0000h

SETUP_IDX is a 16-bit register that references an internal setting in the VSA (refer to Table 5-35). A read of SETUP_IDX returns the last

value written to SETUP_IDX. A write of SETUP_IDX selects the index for a corresponding write to SETUP_DATA. Writes of any unde-

fined index values to SETUP_IDX are ignored. If the current value of SETUP_IDX is invalid, a read of SETUP_DATA returns 0.

ACPI_BASE 10h-11h

GPE0_STS — General Purpose Event 0 Status Register (R/W)

Reset Value = 0000h

Each bit is set by an external event and cleared by a write of a one to that bit. The GPE0_STS bits are mapped to specific, chipset-resident

GPIO signals using the SETUP_IDX and SETUP_DATA registers. Refer to Tables 5-35 through 5-37.

OEM_GPE_S15: Original Equipment Manufacturer General Purpose Event Status Bit 15 - OEM defined.

OEM_GPE_S14: Original Equipment Manufacturer General Purpose Event Status Bit 14 - OEM defined.

OEM_GPE_S13: Original Equipment Manufacturer General Purpose Event Status Bit 13 - OEM defined.

OEM_GPE_S12: Original Equipment Manufacturer General Purpose Event Status Bit 12 - OEM defined.

OEM_GPE_S11: Original Equipment Manufacturer General Purpose Event Status Bit 11 - OEM defined.

OEM_GPE_S10: Original Equipment Manufacturer General Purpose Event Status Bit 10 - OEM defined.

OEM_GPE_S09: Original Equipment Manufacturer General Purpose Event Status Bit 9 - OEM defined.

OEM_GPE_S08: Original Equipment Manufacturer General Purpose Event Status Bit 8 - OEM defined.

OEM_GPE_S07: Original Equipment Manufacturer General Purpose Event Status Bit 7 - OEM defined.

OEM_GPE_S06: Original Equipment Manufacturer General Purpose Event Status Bit 6 - OEM defined.

The recommended mapping for the lid switch input is to use GPIO6. If the recommended mapping is used, this bit (bit 6)

needs to be mapped to GPIO6 at boot time via SETUP_IDX and SETUP_DATA. Similarly, the lid switch input needs to be

routed to GPIO6 in hardware. If this method is selected, this bit is defined as:

LID_STS: Lid Status - Set when lid state changes. If LID_EN (ACPI_BASE 12h[6] is set, a SCI interrupt is asserted. Reset

by writing a 1 to this bit.

OEM_GPE_S05: Original Equipment Manufacturer General Purpose Event Status Bit 5 - OEM defined.

OEM_GPE_S04: Original Equipment Manufacturer General Purpose Event Status Bit 4 - OEM defined.

OEM_GPE_S03: Original Equipment Manufacturer General Purpose Event Status Bit 3 - OEM defined.

OEM_GPE_S02: Original Equipment Manufacturer General Purpose Event Status Bit 2 - OEM defined.

OEM_GPE_S01: Original Equipment Manufacturer General Purpose Event Status Bit 1 - OEM defined.

OEM_GPE_S00: Original Equipment Manufacturer General Purpose Event Status Bit 0 - OEM defined.

ACPI_BASE 12h-13h

GPE0_EN — General Purpose Event 0 Enable Register (R/W)

Reset Value = 0000h

OEM_GPE_E15: Original Equipment Manufacturer General Purpose Event Enable Bit 15 - When set, enables a SCI to be