CS5530 datasheet(9/241 Pages) NSC

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Architecture Overview (Continued)

1.7

DISPLAY SUBSYSTEM EXTENSIONS

The CS5530 incorporates extensions to the GXLV proces-

sor’s display subsystem. These include:

• Video Accelerator

- Buffers and formats input YUV video data from

processor

- 8-bit interface to the GXLV processor

- X & Y scaler with bilinear filter

- Color space converter (YUV to RGB)

• Video Overlay Logic

-Color key

- Data switch for graphics and video data

•Gamma RAM

- Brightness and contrast control

• Display Interface

- Integrated RGB Video DACs

- VESA DDC2B/DPMS support

- Flat panel interface

Figure 1-3 shows the data path of the display subsystem

extensions.

Figure 1-3. Display Subsystem Extensions, 8-Bit Interface

VID_DATA[7:0]

Input

Buffer 0

(3x360x32 bit)

Buffer 1

Buffer 2

Formatter

Scaler

Vertical

Filter

Horizontal

Filter

Color

Space

Converter

Formatter

Color Key

Color

Compare

PIXEL[23:0]

Bypass

Gamma

RAM

Video

Dither

8each

DAC

RGB to CRT

FP_DATA

Enable Gamma

Correction Register

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