Power Management Architecture - Intermec CK30 Service Manual

Chapter 4 — Theory of Operation

Power Management Architecture

54
PXA250-based
Low Batt
Detect
IO Key
Controller
Low 3.3V
Rst SW
Detect
Reset
CK30 Power Management Block Diagram
System
Data,
WinCE
Addr
Power Manager
Intermec
Battery Manager
GPIO
INT Handler I2C driver
Wakeup
I2C
Power
Enables
Supply
Super
cap
Battery,
Supercap,
Temperature Main
Monitoring
Battery
CK30 Handheld Computer Service Manual
Addr, Data Bus
Shutdn
Shutdn
Power
Switches
Core 1.3V, 3.3V, etc.
Power
Supplies