Block Diagram - Casio CTK-611 Service Manual

Reset IC
RESET
IC1
RN5VD40AA
Sound Source ROM
(16M-bit)
LSI3
UPD23C16000WGX-
C51
MA0, MA1
EA0 ~
Effect RAM
EA14
(256K-bit)
LSI5
TC55257DFL-
EIO0 ~
70L(EL)
EIO7
Output
Speakers
MC-Service

BLOCK DIAGRAM

Working Storage
RAM (256K-bit)
LSI4
OUT
TC55257DFL-70L(EL)
MA0 MD0
~
~
MD7
MA14
MD0 ~ MD15
MA0 ~ MA19
LRCK, SO
BCK, SINK
DSP
LSI2
HG51B277FB-1
LRCK
SO
BCK
D/A Converter
LSI6
UPD6379GR
Filter
Q107 ~ Q110
Main
Volume
Power Amplifier
IC101
TA8248K
— 3 —
LCD Driver
MIDI
P10, P13
IN
P14, P17
SED1278F2A
P23
CPU
LSI1
UPD913GF-3BA
KI0 ~ KI2
PB0 ~ PB3
FI10
NMI
PA0 ~ PA5
PB0 ~ PB3
PB4
VCC
APO
SEG1 ~ SEG40
LSI401 LCD
COM1 ~ COM16
FI0 ~ FI9
SI0 ~ SI9
Keyboard
KC0 ~ KC7
VDD
Power Switch
Buttons
Assingnable Jack
LVDD DVDD
VC
AVDD
VDD
Power Supply Circuit
Q101 ~ Q105,
D106/107, D190