
9.0 System Wake-Up Control (SWC)
(Continued)
Revision 1.2
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P
9.3.10
This register contains control and status bits for the SWC module. It is reset by hardware to 00h.
Power Well:V
PP
Location:
All Banks
, Offset 08h
Type:
Varies per bit
SWC Miscellaneous Control Register (SWC_CTL)
Bit
7
6
5
4
3
2
1
0
Name
SW_OFF
_CTL
0
SW_ON
_CTL
0
PWB_OVR
_STS
0
CROWBAR
_STS
0
Reserved
SWAP
_KBMS
0
Reset
0
0
0
Bit
Type
Description
7
R/W
SW_OFF_CTL (Software Off Control).
Writing ‘1’ to this bit sets the SW_OFF_STS bit in the
GPE1_STS_3 register (see Section 9.4.11 on page 211), which requests a V
DD
power off sequence.
This bit then returns to ‘0’ (read always returns ‘0’).
0: Inactive (default)
1: Requests a V
DD
power off sequence
6
R/W
SW_ON_CTL (Software On Control).
Writing ‘1’ to this bit sets the SW_ON_STS bit in the
GPE1_STS_3 register (see Section 9.4.11 on page 211), which requests a V
DD
Power On sequence.
This bit then returns to ‘0’ (read always returns ‘0’). When the V
DD
power is off, this bit can be written
only through the ACCESS.bus (
PC87413 and PC87417
).
0: Inactive (default)
1: Requests a V
DD
Power On sequence
5
R/W1C
PWB_OVR_STS (Power Button Override Status).
Indicates that the Power Button Override event has
occurred (Power button pressed for more than 4 seconds). In this condition the V
DD
power is
unconditionally turned off. Writing ‘1’ clears this bit; writing ‘0’ is ignored.
0: Inactive (default)
1: Power Button Override event has occurred
4
R/W1C
CROWBAR_STS (Crowbar Status).
Indicates that the Crowbar event has been detected (V
DD
remained Off for longer than the Crowbar Timeout). In this condition the V
DD
power is turned off. Writing
‘1’ clears this bit; writing ‘0’ is ignored.
0: Inactive (default)
1: Crowbar event has been detected
3-1
Reserved.
0
R/W
SWAP_KBMS (Swap Keyboard and Mouse Inputs).
When this bit is set, the keyboard signals
(KBCLK and KBDAT) are swapped with the mouse signals (MCLK and MDAT). This bit must be set to
the same value as the Swap bit in the KBC Configuration register (see Section 3.13.3 on page 69).
0: No swapping (default)
1: Swaps the keyboard and mouse signals