Casio DT-940 - System Diagram

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6.3 SYSTEM DIAGRAM
Serial I/F 1
CPU
BSC RTC
RAM 1KB
PROM/
Mask ROM
Serial I/F 2
16bit Integrated
Timer Pulse Unit
User Break
Controller
Bus State
Controller
Interrupt
Controller
Power Supply
Circuit
DMA
Controller
Watch Dog
Timer
Programable
Timing Pttern
Controller
Stacked MCP
PSRAM: 4MB
FROM: 16MB
Vibrator
X32.7680K
X14.7456M
X48M
CPC
SH7020
ASIC
(S1L51253B22F100)
Notification System
Bank
Swich
PBXX
PBXXPBXX
Input
Signal
Clock for
Buzzer
System Clock
4.9152MHz
LED Red
LED Green
LED Blue
IHC
SIF
Antenna
NLC
BZC
PMU
KBC
Key &
Key Backlight
Main
Battery
Bluetooth
Module
Bluetooth
Communication
System
Laser
Scanner
System
IrDA 1.1
Communication
System
LSC
LCDC
LCD &
LED
Backlight
IRIF
Sub
BATT
Buzzer
Laser
Scanner
Unit
Trigger
Key
Key & Switch System Display System
Backlight ON/OFF
Backlight
ON/OFF
IrDA
Module