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A.5
Low power interface
Name
SLEEPDEEP
SLEEPING
SLEEPHOLDACKn
WICMASKISR
WICMASKMON
WICMASKNMI
WICMASKRXEV
WICLOAD
WICCLEAR
WICDSACKn
SLEEPHOLDREQn
WICDSREQn
ARM DDI 0337G
Unrestricted Access
Table A-5 lists the signals of the low power interface.
Direction
Description
Output
Indicates that the Cortex-M3 clock can be stopped.
Output
Indicates that the Cortex-M3 clock can be stopped.
Output
Acknowledge signal for SLEEPHOLDREQn.
Output
WIC Active high set of signals indicating which interrupts would cause wakeup.
Output
WIC Active high signal indicating that debug monitor would cause wakeup.
Output
WIC Active high signal indicating that NMI would cause wakeup.
Output
WIC Active high signal indicating that RXEV would cause wakeup.
Output
Causes WIC to be loaded with sensitivity data given by WICMASK*.
Output
Causes WIC to clear registered sensitivity data.
Output
Active low indication that accepts WICDSREQn and means that SLEEPDEEP
is WIC mode sleep.
Input
Request to extend sleep. Can only be asserted when SLEEPING is high.
Input
WIC Active low request from WIC that SLEEPDEEP be WIC mode sleep.
Copyright © 2005-2008 ARM Limited. All rights reserved.
Table A-5 Low power interface signals
Non-Confidential
Signal Descriptions
A-7
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