2.18 VGA/LCD/LVDS interface connections
The PCM-9372’s PCI SVGA interface can drive conventional CRT dis- plays and is capable of driving a wide range of flat panel displays, includ- ing passive LCD and active LCD displays. The board has three connectors to support these displays: one for standard CRT VGA moni- tors, one for flat panel displays, and one for LVDS type LCD panels.
2.18.1 CRT display connector (CN5)
CN8 is a 16-pin, dual-inline header used for conventional CRT displays.
Asimple one-to-one adapter can be used to match CN5 to a standard 15- pin D-SUB connector commonly used for VGA.
Pin assignments for CRT display connector CN8 are detailed in Appendix C.
2.18.2 Flat panel display connector (CN2)
CN2 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 PCM-9372 provides a bias control signal on CN11 that can be used to control the LCD bias voltage. It is recommended that the LCD bias voltage 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 PCM-9372’s power is applied, the control signal is low until just after the relevant flat panel sig- nals are present. CN2 can connect up to 24 bit TFT LCD.
2.18.3 Extension flat panel connector (CN4)
CN4 consists of a 20-pin connector which is Hirose’s product no. DF13A-20DP-1.25V. The PCM-9372 supports a 36-bit LCD panel which must be connected to both the CN2 (40-pin) and the CN4 (20-pin). The pin assignments for both CN2and the CN4 can be found in Appendix C
2.18.4 LVDS LCD panel connector (CN3)
The PCM-9372 uses the VIA Twister 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 CN3.
