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21 Chapter 2 Installation
2.19.1 CRT display connector (CN12)
CN12 is a standard 15-pin D-SUB connector commonly used for VGA.
The pin assignments for CRT display connector CN12 are detailed in
Appendix C.
2.19.2 Flat panel display connector (CN18)
CN18 consists of a 40-pin connector which can support a 24-bit LCD
panel. It is Hirose’s product no. DF13A-40DP-1.25 V
The PCI-6871 provides a bias control signal on CN18 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 PCI-6871’s power is
applied, the control signal is low until just after the relevant flat panel sig-
nals are present. CN18 can connect up to 24 bit TFT LCD.
2.19.3 Extension flat panel connector (CN17)
CN17 consists of a 20-pin connector which is Hirose’s product no.
DF13A-20DP-1.25V. The PCI-6871 supports a 36-bit LCD panel which
must be connected to both the CN18 (40-pin) and the CN17 (20-pin). The
pin assignments for both CN18and the CN17 can be found in Appendix C
2.19.4 LVDS LCD panel connector (CN21)
The PCI-6871 uses the VIA TwisterT chip that supports 2 channel (2 x
18 bit) LVDS LCD panel displays. Users can connect to either an 18-bit
or 36-bit LVDS LCD with CN21.