Rastergraf
2-8 Specifications
2.2 Specifications Unique to Topaz, Stratus, and Garnet
Enhanced Functionality:
The Topaz, Stratus, Garnet are the fully loaded versions.
They add a Conexant Bt835 NTSC/PAL/SECAM video
digitizer, Analog Devices AD9882 high-speed
RGB/YUV/DVI digitizer, Analog Devices ADV7120 or
ADV7123 VGA DAC, THine THC63DV164 DVI encoder,
configuration EEPROM, and an LM75 thermal sensor.
Front Panel LVDS:
The Topaz (only) can be ordered with Front Panel LVDS.
It uses an MDR26 connector and follows the CameraLink
(frame grabber side) pinout to make it easy to find cables.
Please see Chapter 3 for pinout information.
VGA DAC and DVI Out:
The versatile 24-bit flat panel (FP) port of the SM731
drives both an Analog Devices ADV7120 (Topaz, Stratus)
or ADV7123 (Garnet) VGA DAC and a THine
THC63DV164 DVI encoder. Thus, depending on the user
requirements, the FP port can either supply a DVI encoded
single channel graphics out or the second VGA port.
When used in the secondary port mode, display resolution
is limited to about 1280 x 1024 because the SM731 can’t
supply pixels fast enough to do more. The DAC can
support RGBHV or RGB with SOG. Properly programmed,
interlaced is supported.
When used to supply DVI, the port can go up to 1600 x
1200. Best results are had when the pixel clock is limited to
150 MHz. Reduced blanking interval timing will further
improve margins.
NTSC/PAL Digitizer:
The Topaz, Stratus, and Garnet have a Conexant Bt835
Video Digitizer chip. It captures NTSC/PAL/SECAM
composite video or S-Video with resolutions up to
768x576. It performs on-the-fly image scaling and clipping.
The Bt835 has a multiplexer that can select composite and
S-Video (separate chrominance and luminance).
Note: All
inputs have low pass filters.
.
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