AMD Geode SC2200 - Manual (Page 308)

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