LG LSC27990TT - Upper Lamp in Refrigerator Compartment; Lower Lamp in Refrigerator Compartment; Vegetable Compartment Cover

2-4. DISPLAY circuit diagram
(1) GR-G277STSA(LSC27990TT)
EXPLANATION FOR MICOM CIRCUIT
- 42 -
Instruction
MMU
Instruction
CACHE
(16KB)
External
Coproc
Interface
Data
MMU
LCD
CONT
4" TFT LCD
Clock Generator
(MPLL/UPLL)
Clock Generator
(MPLL/UPLL)
LCD
DMA
A
H
B
B
U
S
A
H
B
B
U
S
BUS CONT
Arbitor/Decode
Power
Mabagement
Memory CONT.
SRAM/NOR/SDRAM
Interrupt CONT USB HOST CONT.
12C
USB Device
SDI/MMC
SPI 0. 1
Watchdog
Timer
BUS CONT.
Arbitor/Decode
12S
GPIO
Timer/PWM
0~3.4 (interanl)
RTC
Watch
8 Key
Touch Button SW & LED
Buzzer
On/Off
64M SDRAM
1M BOOT ROM
NOR FLASH
ADC
ExtMaster
NAND CONT.
NAND Flash Boot
Loader
Data
CACHE
(16KB)
WriteBack
PA Tag
RAM
AMBA
Bus
Lnf
ARMSTDMI
Processor core
(Internal EMbedded ICE)
ARM920T
JTAG
UART 0. 1. 2
128M NAND
FLASH
Serial Comm.
- Uart0(PIC MICOM)
- Uart1(Main PCB)
- Uart2(Home Net)
USB HOST
(Memory Stick)
100msec
timer
1msec
timer
Backlight
Inverter(PWM)
Buzzer
Freq.