Rastergraf Duros, Руководство пользователя

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Rastergraf
2-2 Specifications
2.1 General
Graphics Processor:
Silicon Motion SM731 2D/3D High Performance 128-Bit
Graphics Processors. Integrated on the same Multi-Chip
Module (MCM) are the memory, LVDS encoders, and TV
encoder.
The SM731 features an internal 235 MHz RAMDAC. It
has a 256 entry Look Up Table (LUT), which is most
commonly used for conversion of 8-bit pixels into full 24-
bit RGB pixels. The RAMDAC has a programmable
four-color bit-mapped 64 x 64 cursor. It supports VGA and
common non-interlaced displays ranging from 640 x 480
up to better than 1600 x 1200. Signature registers enable
display analysis for end-to-end testing.
The pixel size can be 8, 15, 16, or 24 bits. For 15 and 16
bpp, the pixel is divided into Red, Green, and Blue: 5:5:5 or
5:6:5. For 24 bpp, pixel is divided into Red, Green, and
Blue and the data is ordered as packed pixels in memory.
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
Display Memory:
Display memory is 16 MB of 64-bits/word, byte
addressable, no-wait state SDRAM provides eight pages of
1600 x 1200 using 8-bit pixels, four pages using 16-bit
pixels, or two pages using 24 bpp packed pixel mode.
EEPROM Memory:
Flash EEPROM contains the VGA BIOS.
Digital Output:
Digital (DVI) output uses a THine (THC63DV164 DVI
(Optional on Tropos)
encoder connected to the SM731 flat panel output, which
supplies 24-bit TTL level RGB plus HV. It samples and
multiplexes the data and drives four 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.