System Control - Samsung DVD-812 Service Manual

5-4 System Control

5-4-1 Outline
The main micom peripheral circuit is composed of 16bit Micom (MIC1 ; TMP95C265), 8M EPROM (MIC2 ;
M27C801) for Microcode and data save, 256 byte EE-PROM (MIC4 ; KS24C020) for permanent storage of data need-
ed at power off.
The Micom (MIC1 ; TMP95C265) mounted in main board analizes the key commands of front panel or instructions
of remote control through communication with Micom (FIC1 ; uPD780232) of front and controls the devices on
board to execute the corresponding commands after initializing the devices connected with micom on board at
power on.
5-4-2 Block Diagram
FIC1
FRONT MICOM
uPD780232
MICOM
BLOCK
Samsung Electronics
RIC1 SIC1
RF AMP DIGITAL SERVO
KS1461 KS1452
DIC1
DATA PROCESSOR A/V DECODER
KS1453
MIC1
MAIN MICOM
TMP95C265
DATA BUS
MIC4 MIC2
EEPROM EPROM
KS24C020 27C080
Fig. 5-23
Circuit Descriptions
ZIC1 AIC1
D/A CONVERTER
ZIVA4.1 AK4393
ADDRESS
5-13