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2.3
NM2090 Video Controller
The NM2090 is a high performance Flat Panel Video Accelerator that integrates in one single chip,
High Speed DRAM, 24-bit true-color RAMDAC, Graphics/Video Accelerator, Dual clock
synthesizer and a high speed glueless 32-bit PCI and VL bus interface.
By integrating the display DRAM and 128-bit graphics/video accelerator, the NM2090 achieves the
highest performance of any notebook graphics controller. Delivering over 400MB/s of bandwidth,
the NM2090 has sufficient bandwidth to perform full-screen, 30fps video acceleration of MPEG,
Indeo, Cinepak, and other video playback CODECs. The bandwidth headroom also allows the
NM2090 to deliver the highest quality video playback of any notebook graphics solution, without
compromising simultaneous graphics performance.
The unique integration of the NM2090also allows the NM2090to consume 70% less power than
equivalent video solutions, with fewer chips and less board space.
The NM2090 Accelerated Super VGA Flat Panel Controller is the solution for the ultimate design
goals of mobile computers providing the highest performance, lowest power consumption and the
smallest PCB footprint. This is accomplished by integrating the display controller logic and display
memory into one chip, and allows system designers to meet all their design goals without having
to make any compromises between power and performance. A wide variety of LCD panels are
supported, including SVGA (800x600) at 64K colors in a single chip. The CRT/TFT panels can be
driven up to a resolution of 1024x768 NI to provide a wide range of feature selection without
redesign.
NM2090 delivers very high performance using integration and architectural advances. The
integrated DRAM is configured with a 128-bit wide data path, providing very high bandwidth for the
CRT, LCD, BitBLT, Video engine and CPU to use. The on-chip DRAM allows flexible DRAM
controls adding into overall performance. The integration of the display memory offers lowest
power consumption among all implementations of comparable performance and memory capacity.
NM2090 keeps system designers free of all the issues regarding memory design for performance,
power, EMI radiation and board space. The display memory integration provides the lowest chip
count solution for space saving and packaging flexibility.
NM2090 supports 32-bit VL and PCI high performance. Buses to interface with the system. The
PCI interface is designed to be fully compliant with the revision 2.0 PCI specification. Both PCI
and VL modes support 0 wait state write burst cycles to ensure fast writes into the graphics
subsystem. The bus interface can be independently operated at 3.3V;.o8YLjfcirtXwer savings.
NM2090 incorporates GUI acceleration features to further increase the graphics performance. It
supports 64-bit BLT for screen-to-screen and host-to-screen operations. Memory mapped I/O and
linear addressing allows faster updates into. the graphics subsystem. It also supports color
expansion, Clipping, X-Y Coordinates Addressing, Text Acceleration, hardware cursor and icon.
To accelerate video playback under Graphical User interface (GUls) such as Windows95®, The
NM2090 has Color Space Conversion, Horizontal and Vertical Scaling, and Filtering built in the
hardware to accelerate video overlay on the graphics screen. Both alpha key and color key are
supported for overlay control. NM2090 is packaged in a low profile 176 pin TQFD package.
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