Intermec CK30

Chapter 4 — Theory of Operation
Power Management Architecture
Memory-mapped
Registers
GPIO
I2C driver
BATT_FAULT
PXA250-based
System
Intermec
Battery Manager
WinCE
Power Manager
Power
Supplies
Main
Battery
Super
cap
Power
Supply
Controller
Low Batt
Detect
Battery,
Supercap,
Temperature
Monitoring
Low 3.3V
Detect
Reset
Rst SW
Enables
I2C
INT Handler
VDD_FAULT
Reset_Out
Reset_In
PWR_EN
IO Key
Power
Switches
Core 1.3V, 3.3V, etc.
Devices
Shutdn
Gates
Shutdn
Wakeup
Data,
Addr
Addr, Data Bus
CK30 Power Management Block Diagram
54 CK30 Handheld Computer Service Manual