System Architecture - Intermec CK30 Service Manual

Chapter 4 — Theory of Operation

System Architecture

MIC
Conn
Speakers
JTAG
Port
Supercap
Main
Battery
Conn
CK30 High-Level Block Diagram
40
The CK30 platform is a 32-bit 3.3V system, with the processor and FPGA
cores running at 1.3V and 2.5V, respectively. The design is contained on a
single main PCB, except for the following modules:
• The keypad is a separate, replaceable module that attaches to the
exterior of the product, connected to the main PCB through a flex
cable.
• The LCD and drivers are contained within a separate display module,
connected to the main PCB through a flex cable.
• The two speakers are mounted on a small PCB connected to the main
PCB through a wired cable.
• Radio and Ethernet options are implemented with Mini PCI Type 3A
cards.
LCD
(Color or Monochrome)
Touch
Panel
Conn
LCD Conn
Backlight
Driver
Enables
from HCR
Bias
Suppl y
PWM0
Touch
Panel I/F SPI I/F
AC97
AC97 I/F
Codec
Spkr
Conn
Audio
PWM1
Driver
Bluetooth
BT UART
Module
JTAG Pins
Supercap
1.3V CPU
Charger
Core Supply
Supercap
Suppl y
2.5V FPGA
Core Supply
3.3V
Suppl y
System 3.3V
5V
System 5V
Supply
Dashed indicates optional feature
SDRAM
FLASH
SD Slot
LCD 32kHz 3.68MHz MMC I/F
I/F OSC OSC
Memory
Controller
I/F
ST UART
PXA255
Resume
GPIO_0,
Logic
Processor GPIO_1
GPIO
FF UART
USB I/F
Power
Management
I2C I/F
Pins
Reset
Low Batt
Power
Detect
Supply
Controller
Low 3.3V
I/O
MCLR
POR
Battery,
Supercap,
Temperature
Battery
Monitoring
Status LED
CK30 Handheld Computer Service Manual
Debug
Debug Board
Conns
with:
Other signals
- Ethernet controller
of interest
- Debug LEDs
- Logic Analyzer
connectors
Power enables
HCR
Module enables
Regs
Optional
10-pin
Tethered
Scan Port
Scanner
FPGA
Conn
Scan
Scanner
Engine
I/F
Mini-PCI
Slot
Mini-PCI
Mini-PCI
Radio
Host
or
Bridge
Ethernet
Ethernet
User
LEDs
GPIO
Keypad
Conn
Keypad
Matrix
IO Key
Dock
Conn