Personal Computer User Manual

iv Application Note
Intel® PXA27x Processor Family Power Requirements
Contents
7.2 nBATT_FAULT ................................................................................................................... 32
8.0 Power Management Integrated Circuit Requirements ............................................................. 32
8.1 General PMIC Characteristics ............................................................................................ 32
8.2 Features of a PMIC............................................................................................................. 33
8.3 Programmable Voltage Control .......................................................................................... 34
8.3.1 DVM Control Register 1.........................................................................................34
8.3.2 DVM Control Register 2.........................................................................................34
8.3.3 DVM Control and Status Register 3....................................................................... 35
8.3.4 Other Aspects of an Integrated Power Controller.................................................. 35
9.0 Summary ...................................................................................................................................... 35
Figures
1 Intel® PXA27x Processor Internal and External Power Domains ................................................ 7
2 Typical Battery and External Regulator Configuration................................................................ 16
3 Overview of Power Management Operating Modes................................................................... 18
4 Intel® PXA27x Processor Power Manager Sleep Reset State Diagram ....................................26
Tables
1 External Power Supply Descriptions ............................................................................................ 6
2 Intel® PXA27x Processor Voltage Domains.................................................................................9
3 Regulators Required to Power the Intel® PXA27x Processor.................................................... 11
4 Intel® PXA27x Processor Supply Current For Each Power Domain..........................................11
5 Intel® PXA27x Processor VCC_CORE Supply Current ............................................................. 13
6 Possible Backup Battery Configurations .................................................................................... 14
7 Intel® PXA27x Processor Operating Modes .............................................................................. 17
8 Power Controller Interface Signals .............................................................................................19
9 General PMIC Characteristics .................................................................................................... 33