Intel PXA27X manual Typical Battery and External Regulator Configuration

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Intel® PXA27x Processor Family Power Requirements

Figure 2. Typical Battery and External Regulator Configuration

	PXA27x Processor
16	Application Note

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Contents Intel PXA27x Processor Family Power Requirements Application NoteApplication Note Contents Figures Introduction Naming ConventionsExternal Power Supply Descriptions Intel PXA27x Processor Power Supply DomainsPower Domain Enable1 Units Specified Levels Tolerance Volts PLL PxtalSram DMAPower Domains and System Voltage/Current Requirements Intel PXA27x Processor Power SuppliesIntel PXA27x Processor Voltage Domains Sheet 1 Voltage DescriptionPower Supply Configuration in a Minimal System Intel PXA27x Processor Voltage Domains Sheet 2Modeling Intel PXA27x processor power consumption Regulators Required to Power the Intel PXA27x ProcessorIntel PXA27x Processor Vcccore Supply Current Regulator DescriptionFrequency Dhrystones Power MPEG4 Decode Power Stress Supply Current For Each Power DomainIntel PXA27x Processor Vcccore Supply Current Default Reset Values Intel PXA27x Processor Supply Current For Each Power DomainName Functional Units Current mA @ Power VccbattBackup Battery Main BatteryBatteries Possible Backup Battery Configurations Battery Chargers and Main PowerBackup Battery Description Typical Battery and External Regulator Configuration Intel PXA27x Processor Low Power Operating Modes Intel PXA27x Processor Operating ModesCPDIS=1 Power Controller Interface SignalsCPDIS=0 Power Enable Pwren System Power Enable Sysen / GPIO2Power Manager I2C Clock Pwrscl / GPIO3 Power Controller Interface SignalsPower Manager I2C Data Pwrsda / GPIO4 On, Off, and ResetUser-Initiated Hard Reset Input System-Level Considerations for I2CNRESET Output from Pmic to the Intel PXA27x Processor Power Manager Capacitor SignalsUniversal Subscriber Identity Module Usim Power-On Power Mode SequencingCold-Start Power-On and Hardware Reset Initial Power Up and Deep Sleep Exit Sequence Vcccore Vccpll VccsramHardware Reset Behavior Intel PXA27x Processor Family Power Requirements Sysdel PwrdelSleep and Deep Sleep Sleep Entry and ExitDeep Sleep Entry and Exit Dynamic Voltage Management DVM Vcccore Regulator and Dynamic Voltage ManagementIntel PXA27x Processor Voltage Manager Fault Management Power Manager I2C InterfaceNVDDFAULT DVM SequencingNBATTFAULT Power Management Integrated Circuit RequirementsGeneral Pmic Characteristics General Pmic Characteristics Features of a PmicCharacteristic Description Programmable Voltage Control DVM Control RegisterSummary Other Aspects of an Integrated Power ControllerDVM Control and Status Register Intel PXA27x Processor Family Power Requirements