Intel PXA27x Processor Power Supplies | Intel PXA27X specs

Intel® PXA27x Processor Family Power Requirements

2.1Power Domains and System Voltage/Current Requirements

The following sections document the power requirements for the PXA27x processor, but do not include external support, memory, or other peripheral components.

The power consumption values shown in Table 5 are all worst-case numbers. These numbers give the worst-case system power-supply requirements and do not reflect typical system power consumption.

2.1.1Intel® PXA27x Processor Power Supplies

Viewed externally, the processor can require up to nine independent voltages provided by regulated supplies. In some cases, multiple voltage domains might be strapped together, reducing the number of separate regulators to as few as four. Internally, there are more domains, but these are powered from the externally supplied domains by on-chip regulators. The internal domains are documented for informational purposes only; the external power controller does not have to consider them in its design.

Table 2 shows the PXA27x processor voltage domains.

8	Application Note

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Intel PXA27X manual Power Domains and System Voltage/Current Requirements, Intel PXA27x Processor Power Supplies

Contents

Intel PXA27x Processor Family Power Requirements Application Note Application Note Contents Figures Introduction Naming Conventions Power Domain Enable1 Units Specified Levels Tolerance Volts Intel PXA27x Processor Power Supply DomainsExternal Power Supply Descriptions PLL PxtalSram DMA Power Domains and System Voltage/Current Requirements Intel PXA27x Processor Power Supplies Intel PXA27x Processor Voltage Domains Sheet 1 Voltage Description Power Supply Configuration in a Minimal System Intel PXA27x Processor Voltage Domains Sheet 2 Modeling Intel PXA27x processor power consumption Regulators Required to Power the Intel PXA27x ProcessorIntel PXA27x Processor Vcccore Supply Current Regulator Description Intel PXA27x Processor Vcccore Supply Current Supply Current For Each Power DomainFrequency Dhrystones Power MPEG4 Decode Power Stress Default Reset Values Intel PXA27x Processor Supply Current For Each Power DomainName Functional Units Current mA @ Power Vccbatt Batteries Main BatteryBackup Battery Backup Battery Description Battery Chargers and Main PowerPossible Backup Battery Configurations Typical Battery and External Regulator Configuration Intel PXA27x Processor Low Power Operating Modes Intel PXA27x Processor Operating Modes CPDIS=0 Power Controller Interface SignalsCPDIS=1 Power Enable Pwren System Power Enable Sysen / GPIO2Power Manager I2C Clock Pwrscl / GPIO3 Power Controller Interface Signals Power Manager I2C Data Pwrsda / GPIO4 On, Off, and ResetUser-Initiated Hard Reset Input System-Level Considerations for I2C Universal Subscriber Identity Module Usim Power Manager Capacitor SignalsNRESET Output from Pmic to the Intel PXA27x Processor Cold-Start Power-On and Hardware Reset Power Mode SequencingPower-On Initial Power Up and Deep Sleep Exit Sequence Vcccore Vccpll Vccsram Hardware Reset Behavior Intel PXA27x Processor Family Power Requirements Sysdel Pwrdel Sleep and Deep Sleep Sleep Entry and Exit Deep Sleep Entry and Exit Dynamic Voltage Management DVM Vcccore Regulator and Dynamic Voltage Management Intel PXA27x Processor Voltage Manager Fault Management Power Manager I2C InterfaceNVDDFAULT DVM Sequencing General Pmic Characteristics Power Management Integrated Circuit RequirementsNBATTFAULT Characteristic Description Features of a PmicGeneral Pmic Characteristics Programmable Voltage Control DVM Control Register DVM Control and Status Register Other Aspects of an Integrated Power ControllerSummary Intel PXA27x Processor Family Power Requirements