AMD SC1200, SC1201 manual Display Modes, Video Input Port, Vip, Tvout

	32579B		Video Processor Module
Display Modes		•	Video Input Port
•	CRT modes:		— CCIR-656 decoder
			— Capture Video/VBI modes
	— 640x480x16 bpp at 60-85 Hz vertical refresh rates
			— Direct Video/VBI modes
	— 800x600x16 bpp at 60-85 Hz vertical refresh rates
	— 1024x768x16 bpp at 60-85 Hz vertical refresh rates	•	Video Formatter
	— 1280x1024x8 bpp at 60-75 Hz vertical refresh rates		— Asynchronous video interface
•	TFT modes:		— Horizontal/Vertical scalers
			— Filters
	— TFT on IDE: FPCLK max is 40 MHz
	— TFT on Parallel Port: FPCLK max is 80 MHz	•	Mixer/Blender
	— 640x480x16 bpp at 60-85 Hz vertical refresh rates		— Overlay with color/chroma key
	— 800x600x16 bpp at 60-85 Hz vertical refresh rates		— Gamma correction
	— 1024x768x16 bpp at 60-75 Hz vertical refresh rates		— Color space converters
	— 1280x1024x8 bpp at 60 Hz vertical refresh rate		— Alpha blender
•	TV modes:	•	TV Encoder
	— NTSC: 720x480 and 640x480		— Horizontal scalers
	— PAL: 720x576 and 768x576		— Scan rate converter
	— BGU481 package does not support simultaneous		— Flicker filter
	TV/CRT or TV/TFT operation		— VESA Video Interface Port Rev. 1.1 Task B encoder
			— TV Timing Generator
			— TV encoder

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 SC1200/ SC1201 processor, see Section 2.2 on page 22. The Video Processor module includes the following functions:

•Outputs

—TV interface with DACs

—CRT interface with DACs

—TFT interface

—Video Output Port (VOP)

•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
			VBI	Mixer/Blender
				Overlay with Gamma
		VBI	Data
				RAM and Alpha
		Mux		Blending
Video or VBI Data from GX1 Video Port

TVOUT

Flicker Filter,

Horizontal Scaling,

VESA Encoder,

Timing Generator,

and TV Encoder

TFT_IF

CRT_IF

DACs

VOP

TV_IF

DACs

Figure 7-1. Video Processor Block Diagram

312 AMD Geode™ SC1200/SC1201 Processor Data Book