Circuit Block Diagram - Casio Cassiopeia E-125 Service Manual And Parts List

10. CIRCUIT BLOCK DIAGRAM

Timer clock
OSB
KEYS
Action/ Voice etc. Instruction/ Cache Mem.
Bus Control Unit
(Key PCB)
IC 1
System clock
45.158MHz
GATE ARRAY (ASIC): KUJIRA
*KUJIRA is a Japanese nickname for this Gate Array, and
can not be replaced as well as above CPU because of BGA
* For Communication and LCD drive/control etc.
Fast IrDA clock
48MHz
CF/MODEM
Card
(US and
Canada only)
PC
(From AC adapter)
System clock for CPU
32.768kHz
PLL OSB
150MHz
CORE of CPU
POWER
RESET ON/OFF
MIC
IC300
* Battery Power detection
* Touch Panel IF
* HP/ SP drive
USB
Mobile
CRADLE
Phone
18.432MHz
CPU
IC2
(BGA)
VR4122
General Purpose
Interface
Alarm LED
(RED)
LED IF
ADDRESS BUS
Back light
Voltage
LCD (TFT) Module
240 x 320 dots
VCOM
MODEM
(US & Canada
only)
To Analog Telephone line
— 55 —
IC5
IrDA Module
IC200
Power IC
* Power supply
* Voltage regulator
* Voltage detection
* Charge control
Charge LED
DC/AC
Inverter
(Amber/ Green)
DATA BUS
DRAM x 2
ROM x 2
DRAM1/ DRAM2 MROM1/MROM2
16 Mbytes
32 Mbytes
(16 Mbytesx2) (8 Mbytesx2)
Backup
Battery
IC303
Battery power detection
Touch Panel
IC306
Rechargeable
Battery
AC Adapter
AD-C59200
(To Cradle)
V5LCD
Headphone
Speaker