AMD SC2200 Computer Hardware User Manual


 
320 AMD Geode™ SC2200 Processor Data Book
Video Processor Module
32580B
7.1 Module Architecture
Figure 7-1 shows a top-level block diagram of the Video
Processor. For information about the relationship between
the Video Processor and the other modules of the SC2200,
see Section 2.2 on page 22. The Video Processor module
includes the following functions:
Video Input Port
CCIR-656 decoder
Capture Video/VBI modes
Direct Video mode
Video Formatter
Asynchronous video interface
Horizontal/vertical scalers
—Filters
Mixer/Blender
Overlay with color/chroma key
Gamma correction
Color space converters
Alpha blender
Outputs
CRT interface with DACs
TFT interface
Dot Clock PLL
The following subsections describe each block in detail.
Figure 7-1. Video Processor Block Diagram
VIP
Capture Video/VBI
Bus Master,
Video Formatter
Horizontal Downscaler,
Line Buffer, Horizontal
and Vertical Upscalers,
and Filters
Mixer/Blender
Overlay with Gamma
RAM and Alpha
Blending
Capture Video/VBI Data to
GX1 Video Frame Buffer
VIP Data
Video Data from GX1 Video Port
Video
Mux
Video
Data
TFT_IF
CRT_IF
DACs
Controller and
Direct Video/VBI
Controller
GX1 Graphics Data