Advanced Configuration and Power Interface Specification

Device Configuration
Offset Field Name Definition
Byte 7
Interrupt and IO
Flags, bits [7:0]
For Interrupt Connections:
Bit [7:5] Reserved (must be 0)
Bit [4] Wake Capability, _WKC
0x0 = Not Wake Capable: This interrupt is not
capable of waking the system.
0x1 = Wake Capable: This interrupt is capable of
waking the system from a low-power idle state
or a system sleep state.
Bit [3] Interrupt Sharing, _SHR
0x0 = Exclusive: This interrupt is not shared with
other devices.
0x1 = Shared: This interrupt is shared with other
devices.
Bit [2:1] Interrupt Polarity, _POL
0x0 = Active-High: This interrupt is sampled when the signal
is high, or true.
0x1 = Active-Low: This interrupt is sampled when the signal
is low, or false.
0x2 = Active-Both: This interrupt is sampled on both rising
and falling edges. Interrupt mode must be set to
Edge-triggered.
0x3 – Reserved (do not use)
Bit [0] Interrupt Mode, _MOD
0x0 = Level-Triggered: Interrupt is triggered in response to
the signal being in either a high or low state.
0x1 = Edge-Triggered: This interrupt is triggered in response
to a change in signal state, either high to low or
low to high.
Byte 8
Interrupt and IO
Flags, bits
[15:8]
For IO Connections:
Bit [7:4] Reserved (must be 0)
Bit [3] IO Sharing, _SHR
0x0 = Exclusive: This interrupt is not shared with other
devices.
0x1 = Shared: This interrupt is shared with other devices.
Bit [2] Reserved (must be 0)
Bit [1:0] IO Restriction _IOR
0x0 = This pin or pins can be used for either Input or Output.
0x1 = This pin or pins can only be used for Input, and the
pin configuration must be preserved while not in use.
0x2 = This pin or pins can only be used for Output, and the
pin configuration must be preserved while not in use.
0x3 = This pin or pins can be used for either input or output,
but the configuration must be preserved until
explicitly changed.
Bit [15:8] Reserved (must be 0)
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