System Control - Samsung DVD-P350K/XEV Service Manual

13-3 System Control

13-3-1 Outline
The main micom peripheral circuit is composed of 1Mbyte Flash Memory (ZIC3) for Microcode and data save, 2Kbit
EE-PROM (ZIC5) for permanent storage of data needed at power off, 64Mbit SDRAM (ZIC2) for temporary data
read and write.
The Micom (ZIC1 ; Vaddis 7) mounted in main board analizes the key commands of front panel or instructions of
remote control and controls the devices on board to execute the corresponding commands after initializing the
devices connected with micom on board at power on.
13-3-2 Block Diagram
Samsung Electronics
RIC1
RF AMP
(SP3723)
MPEG DECODER
CPU (VADDIS 7)
ZIC5
EEPROM FLASH MEMORY
(4K bit) 2 Mbyte
Fig. 13-13
D/A CONVERTER
(DSD1608)
ZIC1
DATA BUS
ZIC3
ADDRESS
Circuit Operating Descriptions
AIC1
13-9