Intel® PXA27x Processor Family Power Requirements

Contents

Contents

1.0

Introduction

....................................................................................................................................

5

 

1.1

Naming Conventions

5

2.0 Intel® PXA27x Processor Power Supply Domains

5

 

2.1

Power Domains and System Voltage/Current Requirements

8

 

 

2.1.1 Intel® PXA27x Processor Power Supplies

8

 

 

2.1.2 Power Supply Configuration in a Minimal System

10

 

 

2.1.3 Intel® PXA27x Processor Supply Current for Each Power Domain

11

 

 

2.1.4 Intel® PXA27x Processor VCC_CORE Supply Current

12

 

 

2.1.5

Default Reset Values

13

 

2.2

Batteries

14

 

 

2.2.1

Main Battery

14

 

 

2.2.2

Backup Battery

14

 

 

2.2.3 Battery Chargers and Main Power

15

3.0 Intel® PXA27x Processor Low Power Operating Modes

17

4.0 Power Controller Interface Signals

18

 

4.1

Power Enable (PWR_EN)

19

 

4.2

System Power Enable (SYS_EN) / GPIO<2>

19

 

4.3

Power Manager I2C Clock (PWR_SCL) / GPIO<3>

19

 

4.4

Power Manager I2C Data (PWR_SDA) / GPIO<4>)

20

 

4.5

System-Level Considerations for I2C

20

 

4.6

On, Off, and RESET

20

 

 

4.6.1 On and Off Control

20

 

 

4.6.2 User-Initiated Hard Reset Input

20

 

 

4.6.3 nRESET Output from PMIC to the Intel® PXA27x Processor

21

 

4.7

Universal Subscriber Identity Module (USIM)

21

 

4.8

Power Manager Capacitor Signals

21

5.0

Power Mode Sequencing

22

 

5.1

Power-On

22

 

 

5.1.1 Cold-StartPower-On and Hardware Reset

22

 

 

5.1.2 Initial Power Up and Deep Sleep Exit Sequence

23

 

 

5.1.3

Hardware Reset Behavior

24

 

5.2

Sleep and Deep Sleep

27

 

 

5.2.1 Sleep Entry and Exit

27

 

 

5.2.2 Deep Sleep Entry and Exit

28

6.0 Dynamic Voltage Management (DVM)

29

 

6.1

VCC_CORE Regulator and Dynamic Voltage Management

29

 

6.2

Intel® PXA27x Processor Voltage Manager

30

 

6.3

Power Manager I2C Interface

31

 

6.4

DVM Sequencing

31

7.0

Fault Management

31

 

7.1

nVDD_FAULT

31

Application Note

iii

Page 3
Image 3
Intel PXA27X manual Contents