Samsung PS42S5HX/XEH - Page 95

Circuit Description
Samsung Electronics 13-9
■ A name of main part of Logic Board and vocabulary.
Item Name Explanation
①
LVDS Connector
The connector to receive the RGB, H, V, DATAEN and DCLK signals that have been LVDS encoded through the
video board. At present, there are 2 LVDS, both internal and external, and only LVDS will be provided in the final
version of the board.
②
Operating Status LED
The LED that shows whether the Sync and Clock signal is properly supplied to the logic board (Normal Status:
Blinks at 0.8 second intervals)
③
I2C Connector The connector for the Key Scan board that checks and controls the 512K data.
④
MICOM(ARM-PROCESSOR)
512K including the Gamma Table, APC Table, drive waveform timing and other options is saved to internal flash
memory.
⑤
Y Connector The connector to output the control signal for the Y drive board.
⑥
X Connector The connector to output the control signal for the X drive board.
⑦
CN2075(E-Adderss Buffer Connector) The connector to output the address data and the control signal to the E-buffer board.
⑧
CN2076(F-Adderss Buffer Connector) The connector to output the address data and the control signal to the F-buffer board.
⑨
Power Connector The connector to receive power (5V, 3.3V) for the Logic board.
⑩
ASIC CHIP The main processor that generates and outputs the logic drive signal and the address data.
⑪
MICOM LOADING 5PIN CONNECTOR The connector to load the Micom drive program. The program is loaded by connecting to the GA-WRITER.
⑫
VTOGG TP for V Sync Check
1
2
3
4
5
6
7
8
9
01
11
21
■ About Logic Board
The Logic Board consists of a Logic Main board, which processes the video signal input through LVDS and creates the address
driver output and XY drive signals, and a Buffer board, which buffers the output signal and outputs the signal to the Address Driver
IC (TCP IC).
Logic Board Function Remark
Logic Main
- Video Signal Processing (W/L, error diffusion, APC)
- Outputs the Address Driver Control and Data Signals to the Buffer board.
- Outputs the XY Drive Board Control Signal
Buffer Board
E Buffer Board Outputs data and control signals to the bottom left TCP IC.
F Buffer Board Outputs data and control signals to the bottom right TCP IC.