SM712
Overview
The LynxEM+ integrates Silicon Motion’s unique multimedia
features into an MCB solution. The LynxEM+ includes 2MB and
4MB of video memory within a single footprint. This powerful
single footprint solution, when combined with SMI’s Virtual
Refresh™ architecture provides a complete video subsystem
which consumes very little power.
The LynxEM+ offers enhanced capabilities for dual viewing
and for handling dual applications. Through its Virtual
Refresh architecture, the LynxEM+ can simultaneously drive
LCD/CRT and LCD/TV display combinations. Each display can
support independent full-screen full-motion video, as well as
independent graphic refresh rates, resolutions, and color depths.
The LynxEM+ can display slides on a TV/CRT with attached
speaker notes presented on an LCD display that is invisible to
an audience. For a dual application experience, a spreadsheet
can be displayed on an LCD as a word-processing application
or web browser is displayed on a CRT. Dual-view and dual
application support is provided under Windows 95, Windows
98, Windows NT, and Windows 2000.
Key Features
Supports PCI bus
135 MHz RAMDAC support 1024×768 resolution
Supports 18/24-bit TFT panel and 8/12-bit CSTN panel
128-bit 2D graphic engine
4MB embedded SDRAM
Supports two 8-bit ports or one 16-bit port/ITU601 ZV capture
port
Power consumption < 500mW
Mobile Computer Display Controller
Applications
Thin client
UMPC
Notebook
Medical patient monitors
Embedded product monitors
Education machine
Surveillance
IPC
Signage
Packaging
256-pin BGA
The LynxEM+ has three separate Phase Lock Links (PLLs) that allow flexible control of functional blocks within the device. A robust
2D Drawing Engine supports three ROPs, BitBLT, transparent BLT, pattern BLT, color expansion, and line drawing. The Host Interface
Unit is PCI 2.1 compliant and supports bus mastering. The Power-down Control Unit combined with Dynamic Power Management
provides individual block shutdown capability and complete Standby and Suspend support. A VGA Core, LCD Backend Controller
and 135 MHz RAMDAC are also incorporated.
The LynxEM+’s Concurrent Video Processor and Video Capture Unit provide superior video quality for real-time video capture
and playback. The LynxEM+’s Video Processor supports multiple independent full screens and full-motion video windows with
overlay. Each motion video window usesYUV-to-RGB conversion, scaling, and color interpolation. When combined with chip dual
view capabilities, these independent video streams can be output to separate displays and bilinearly scaled to support applications
such as full-screen display of local and remote images for video conferencing.
The LynxEM+ is designed with 0.35m, Transaction Level Model (TLM), 3.3V CMOS process technology. A hierarchical layout
approach provides enhanced internal timing control. In addition to built-in test modes and a signature analyzer, the LynxEM+
incorporates a 20-bit test bus designated as the TD Bus. The TD bus can be utilized to simultaneously monitor 20 internal signals
from 8 functional blocks through the Zoom Video (ZV) Port Interface. The capability increases fault coverage, and reduces silicon
validation and debugging time. The LynxEM+ is available in a 256 BGA package.
‑ Embedded Graphics
Multimedia SoC
(2 pages)
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