Casio IT-2000W - Manual (Page 9)

9
1.2 System Configuration
1.2.1 Hardware Block Diagram
CPU
i486GX

 1

Power switch
A/D
converter
Buffer
DRAM
FLASH ROM
(DINOR)
BIOS/DOS
MASK ROM
Lithium-ion
battery
Secondary sub-battery
Primary sub-battery
IrDA
Driver/Receiver
RS-232C
driver
PC card slot
IrDA 1.1
IrDA 1.0
16550
PC card
controller
Analog touch
panel
Keyboard
controller
NAND FLASH
NAND
interface
Key
LCD LCTC
VGA
controlle r
PMU
COM 1
COM 2
Battery voltage monitoring sensor
Temperature sensor
Illumination sensor
8-pin
14-pin
UART/
SIR
BUS
Controller
PMU
ASIC
RTC
RTC
EL Backlight
BL controller