Rastergraf
General Information 1-9
Scroll, Pan, and Zoom:
Scroll - single line (smooth scroll).
Pan - anywhere on 16 byte boundaries
Zoom: horizontal: 2, 4, 8, 16, vertical: 2, 3 ,...,15, 16
Digital Output (Optional):
The Eclipse3 can supply a digital output using a THine
THC63DV164 DVI encoder. The Borealis Video Out Bus,
which supplies TTL level RGB and Sync, is sampled and
multiplexed and driven onto 4 differential pairs.
Because of the high frequency nature of the TMDS signals,
it is vital that matched length, shielded pair cable be used
for DVI connections.
The standard front panel analog VGA connector is replaced
by a DVI-I connector. This connector supplies both the
digital DVI (TMDS) signals and VGA. Rastergraf can
supply an adapter that allows a standard VGA cable to be
used when a DVI display is not desired or available.
Composite Video Signal:
A jumper can be installed to select Sync-On-Green
operation on boot-up. The signal has the following
approximate values:
1 Volt peak to peak consisting of:
660 mV Reference White +
54 mV Reference Black +
286 mV Sync Level
Display Timing:
The Borealis chip display timing is programmable. The
following tables provide the timing values provided by
Rastergraf software.
Table 1-1 Eclipse3 SDL Platform Display Timing Specifications
Active
Display
Analog/
DVI
Format
Bits per
Pixel
Vertical
Refresh
Horizontal
Refresh
Pixel
Clock
640 x 480
Both
VGA
8, 16, 32
60 Hz
31.55 KHz
27 MHz
800 x 600
Both
SVGA
8, 16, 32
60 Hz
39.35 KHz
42 MHz
1024 x 768
Both
UVGA
8, 16, 32
70 Hz
58.86 KHz
80.52 MHz
1152 x 900
Both
Sun
8, 16, 32
66 Hz
64.92 KHz
99.72 MHz
1280 x 1024
Both
SXGA
8, 16, 32
74 Hz
82.86 KHz
141.5 MHz
1600 x 1200
Both
UXGA
8, 16, 32
60 Hz
75 KHz
162.0 MHz
1920 x 1200
Analog
WUXGA
8, 16, 32
60 Hz
75 KHz
194.4 MHz
