Texas Instruments OMAP36 Series, Technical Reference Manual, Page: 411 / 3738

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PRCM Basic Programming Model
3.6.2.5 Domain Wake-Up Control Registers
The following modules have programmable wake-up control:
• CORE power domain:
– USBTLL
– HS USB OTG
– McBSP 1 and 5
– GPTIMER[10,11]
– UART[1,2]
– I2C[1..3]
– McSPI[1..4]
– MMC[1,2,3]
• PER power domain:
– McBSP[2..4]
– GPTIMER[2..9]
– UART [3,4]
– WDTIMER3
– GPIO[2..6]
• WKUP power domain:
– GPTIMER1
– GPIO1
– SR[1,2]
– I/O pad
• DSS power domain:
– DSS subsystem
• USBHOST power domain:
– HS USB Host subsystem
The registers in the following sections control the wake-up settings.
3.6.2.5.1 PM_WKEN_ <domain_name> (Wake-Up Enable Register)
The wake-up enable register applies only to modules that can generate wake-up events. It allows the
enabling or disabling of the wakeup of the related power domain on a module or subsystem wake-up
event. Each EN_<module> bit in the register enables/disables the wake-up event from the module to the
PRCM module.
The device has the following wake-up enable registers:
• PM_WKEN1_CORE and PM_WKEN3_CORE : CORE domain modules wake-up control
• PM_WKEN_DSS : Display subsystem (DSS) wake-up control
• PM_WKEN_PER : Peripheral domain modules wake-up control
• PM_WKEN_WKUP : WKUP domain modules wake-up control
• PM_WKEN_USBHOST : HS USB Host subsystem wake-up control
NOTE: The wake-up signals issued from the MPU and IVA2.2 INTCs are nonmaskable in the
PRCM module. However, they cannot be generated if the corresponding interrupts are
masked in the INTCs.
3.6.2.5.2 PM_WKST_ <domain_name> (Wake-Up Status Register)
The wake-up status register logs wake-up events from all modules. Each ST_<module> bit of this register
logs a given module-generated wake-up event.
The device has the following wake-up status registers:
411 SWPU177N – December 2009 – Revised November 2010 Power, Reset, and Clock Management
Copyright © 2009–2010, Texas Instruments Incorporated