Vga/Lcd Interface Connections - Advantech PCA-6773 Series User Manual

2.15 VGA/LCD interface connections

The PCA-6773's display interface can drive conventional CRT displays
and is capable of driving a wide range of flat panel displays as well,
including passive LCD and active LCD displays. The board has two dis-
play connectors: one for standard CRT VGA monitors, and one for flat
panel displays.
2.15.1 CRT display connector (CN16)
CN16 is a standard 15-pin D-SUB connector commonly used for VGA.
Pin assignments for CRT display connector CN16 are detailed in Appen-
dix C.
2.15.2 Flat panel display connector (CN14)
CN14 consists of a 40-pin connector which can support an 18-bit LCD
panel. It is Hirose's product no. DF13A-40DP-1.25 V
The PCA-6773 provides a bias control signal on CN12 that can be used to
control the LCD bias voltage. It is recommended that the LCD bias volt-
age not be applied to the panel until the logic supply voltage (+5 V or
+3.3 V) and panel video signals are stable. Under normal operation, the
control signal (ENAVEE) is active high. When the PCA-6773's power is
applied, the control signal is low until just after the relevant flat panel sig-
nals are present.
2.15.3 Extension flat panel connector(CN11)
CN11 consists of a 20-pin connector which is Hirose's product no.DF13-
20DP-1.25V. The PCA-6773 supports a 36-bit LCD panel which must be
connected to both the CN14(40-pin) and CN11(20-pin). The pin assign-
ments for both CN14 and CN11 can be found in Appendix C.
2.15.4 LVDS LCD panel connector(CN10)
The PCA-6773 uses the VIA "TwisterT" chip that supports 2 channel
LVDS LCD panel displays. Users can connect to LVDS LCD with CN10.
2.15.5 LCD inverter connector(CN8)
The LCD inverter is connected to CN8 via a 5-pin connector to provide
+12V power to the LCD display.
PCA-6773 User's Manual 18