Lvds Circuit - Sanyo TI5110LCD Training Manual

Appendix

7-2 LVDS Circuit

(1) LVDS Interface
For transmitting the video signal information, an interface circuit with an LVDS (Low Noise Differential
Signaling) standard is used, which has the merit of low noise, high speed operation by a small amplitude,
and low power consumption.
The LVDS cable connects the transmitter in the driving circuit and the receiver in the module.
Transmitter
(Driving
Circuit)
(2) Driving Circuit
Fig. 32 shows the block diagrams of a panel driving circuit. The final video information (signal) from the
video processor (for example pixelworks) is transmitted to the LCD panel module through an LVDS cable.
Part of (Panel) Driving Circuit
LVDS Transmitter
TxIN
8
R
8
G
8
B
Vsync Vsync
Hsync
BLANK
PARITY
DCLK
TxCLKIN
Fig. 31
LVDS Interface
3.5mA
LVDS Cable
1.2V
Fig. 32
Block Diagrams of Panel Driving Circuit
DATA (LVDS)
TxOUT
CLOCK (LVDS)
100Ω
Terminated
Part of Panel Display (in the module)
LVDS Receiver
RxIN
PDWN
LVDS
-29-
Training Manual Principle of LCD
Receiver
(LCD Panel)
345/200mV
RxOUT
8
R
8
G
8
B
Vsync Vsync
Hsync
BLANK
PARITY
DCLK
RxCLKOUT