Lcd Panel Interface - Epson S1D13743 User Manual

Page 16

4.6 LCD Panel Interface

Note
H2
S1D13743
X70A-G-001-01
The LCD interface signals are available on connectors H2 and H3. For S1D13743 LCD
interface pin mapping, refer to the S1D13743 Hardware Functional Specification,
document number X70A-A-001-xx.
Connector H2 is 0.1x0.1" 20-pin header (10x2) and connector H3 is 0.1x0.1" 40-pin header
(20x2). For the pinout of connectors H2 and H3, see "Schematic Diagrams" on page 21.
On the evaluation board there is an adjustable 6~24V, 40mA max. power supply. This
voltage is provided only on connector H3 (it is not used elsewhere on the board). It is
intended for use to power the LED backlight on some LCD panels. The voltage is adjusted
by the R24 pot.
For LCD panels that use a CCFL backlight, an external power supply must be used to
provide power to the inverter for the CCFL backlight. Usually, the inverter current con-
sumption is higher than the maximum 40mA current available from the on-board volt-
age regulator.
The following diagram shows the location of the LCD panel connectors H2 and H3.
Figure 4-3: LCD Panel Connectors Location (H2, H3)
For the pinout of connectors H2 and H3, see "Schematic Diagrams" on page 21.
S5U13743P00C100 Evaluation Board User Manual
Revision 1.0
Epson Research and Development
Vancouver Design Center
H3
Issue Date: 2007/08/15