32581C

Video Processor Module

7.1Module Architecture

Figure 7-1shows a top-level block diagram of the Video Processor. For information about the relationship between the Video Processor and the other modules of the SC3200, 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

TFT interface

Dot Clock PLL

The following subsections describe each block in detail.

GX1 Graphics Data

Capture Video/VBI Data to

 

 

 

GX1 Video Frame Buffer

 

 

 

 

 

 

 

Video Formatter

 

 

 

Video

Horizontal Downscaler,

 

VIP

 

Line Buffer, Horizontal

 

Video

Data

VIP Data

Capture Video/VBI

 

and Vertical Upscalers,

Mux

 

 

Controller and

 

and Filters

 

 

 

 

Bus Master,

 

 

 

 

Direct Video/VBI

 

 

 

 

Controller

 

 

 

Mixer/Blender

Overlay with Gamma

RAM and Alpha

Blending

TFT_IF

Video Data from GX1 Video Port

Figure 7-1. Video Processor Block Diagram

310

AMD Geode™ SC3200 Processor Data Book

Page 310
Image 310
AMD SC3200 manual Vip, Mixer/Blender