AMD PCM-5862, Руководство пользователя, Страница: 33 / 99

Chapter 2 Installation 27
VGA interface connections
The PCM-5862's PCI SVGA interface can drive conventional CRT
displays and is capable of driving a wide range of flat panel
displays, including electroluminescent (EL), gas plasma, passive
LCD and active LCD displays. The board has two connectors to
support these displays, one for standard CRT VGA monitors and
one for flat panel displays.
CRT display connector (CN1)
CN1 is a 16-pin, dual-in-line header used for conventional CRT
displays. A simple one-to-one adapter can be used to match CN1
to a standard 15-pin D-SUB connector commonly used for VGA.
Pin assignments for CRT display connector CN1 are detailed in
Appendix C.
Flat panel display connector (CN2)
CN2 consists of a 44-pin, dual-in-line header. Power supply
(+12V) present on CN2 depends on the supply connected to the
board. Ensure that both CN10 and CN14 are connected for ±12 V
power supply.
The PCM-5862 provides a bias control signal on CN2 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 (+5V or +3.3V) and panel video signals are stable. Under
normal operation, the control signal (ENAVEE) is active high.
When the PCM-5862's power is applied, the control signal is low
until just after the relevant flat panel signals are present.