Rastergraf Topaz, User Manual

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Rastergraf
1-18 General Information
1.6 Flexible Display Support
The graphics boards support a variety of displays, including LVDS and
DVI Flat Panels, Analog RGB (VGA) Monitors and Video Monitors. This
enables it to be easily incorporated into a wide variety of applications. .
Although at a reduced display size, the graphics boards can drive two
independent displays. One path is dedicated to RGB/DVI/LVDS displays
and the other to RGB/TV/LVDS displays. Remember that performance
will be compromised because there is only one drawing engine.
Figure 1-13 Display Channels
There are two independent display controllers inside SM731: The Panel
Controller also referenced as the Primary Controller and the CRT
Controller also referred to as the Secondary Controller. Because of this,
SM731 is able to drive two screens with different images, from separate
frame buffers and at independently programmable timing and resolution.
Furthermore, the LCD panels can be programmed to display images from
either controller, with some restrictions. The Digital Interface can drive
data from either the Panel Controller or the CRT Controller, just like the
LVDS2 interface. The LVDS1 interface is hardwired to drive data from
the Panel Controller (primary display). If the digital interface (which goes
to the external DVI encoder and the external Ch 2 VGA DAC) and
LVDS2 interface are both turned on to drive the single pixel panels, their
data source has to be the same either from the Panel controller or CRT
controller. There will be no restriction if only one interface is on for single
pixel panel or LVDS2 is used for double pixel panel.
See
Section 5.2 for more information about the possible display
combinations. There are several pages of diagrams that illustrate the
amazing flexibility of the SM731 display modes.
LVDS1
LVDS2
Digital out
Panel Controller
CRT Controller
RGB
DAC
TV Out
TV
Encoder
Display
Processor 1
Display
Processor 2
LVDS1
LVDS2
Digital out
Panel Controller
CRT Controller
RGB
DAC
TV Out
TV
Encoder
Display
Processor 1
Display
Processor 2