Winbond Electronics W9952QP Datasheet

W9952QP

GENERAL DESCRIPTION

TV ENCODER

FUNCTIONAL BLOCK

The W9952QP digital video encoder converts YCbCr (4:2:2) 8-bit data into analog composite video and Y/C video signals. It accepts ITU-601/656 or square pixel input formats, and the output video is formatted to be compatible with 525-line (M) NTSC/ PAL or 625-line (B,D,G,H,I,M,Nc) PAL TV System.

The W9952QP operates in both master or slave modes. At slave mode, the W9952QP auto detects the input video format from the HSYNCN and VSYNCN pins and generates the corresponding video signals. At master mode, It generates the required video timing internally according to the configuration.

The W9952QP has two DAC outputs which can output either two composite video signals or one Y/C S-video signal. The W9952QP doesn't output composite video and S-video simultaneously.

The W9952QP can operate at power-down mode by selecting the SLEEP pin.

The W9952QP is designed to connect to MPEG1 and MPEG2 video decoders without glue logic. All video processing is done digitally and requires no external adjustment and no software programming is required.

FEATURES

P[7:0]

CBSWAP

CLK

MASTER

SLEEP

MODE[3:0]

Color Space

Converter

Video

Timing

Generator

Sync/ Blank/ Pedestal

1.3 MHz Low

Pass Filter

DTO

VSYNCN HSYNCN

Modu -

lator

TEST

Mux

SVIDEO

Sampl-

ing

Bandgap

Voltage

Reference

DAC

FSADJ VREF_IN

COMP

Y C

VREF _OUT

Figure-1 W9952QP Functional Block

APPLICATIONS

W9952QP is designed for digital video applications, such as VCDs (Video CDs), STBs (Set-Top Box) and video games.

Figure 2 shows a typical configuration of W9952QP application.

P[7:0]

MPEG1/2

DESKTOP

VIDEO

CLK

HSYNCN

VSYNCN

W9952QP

CVBS/ Y

CVBS/ C

• Full multi-standard digital encoder support for 525-line (M) NTSC/ PAL or 625-line PAL ( B, D,

Fig. 2 W9952QP Application

G, H, I, M, Nc)

• Accepts 8-bit ITU-601/656 or square YCbCr (4:2:2) video data

• Two composite outputs or one Y/C video output

(S video)

• Master/ slave sync signal switchable

• Interlaced and non-interlaced operation modes

• Optional internal voltage reference

• Power down mode

• No software programming is required

• 5 Volts operation

FSADJ COMP

VREF_OUT

VREF_IN

CVBS_C

AGND

SLEEP

• 32-pin PLCC package

Winbond Corporate Headquarters Taipei Sales Office Winbond Electronics North America Corp. Winbond Electronics H.K. Ltd.

Tel : 886-3-5790666 Tel : 886-2-27190505 Tel : 1-408-943666 Tel : 852-27513100 Fax : 886-3-5796139 Fax : 886-2-27197502 Fax : 1-408-9436668 Fax : 852-27552064

Details are subject to change without notice. All trademarks are property of their respective holders. May 1997

5 6

VAA

7 8 9

10 11 12 13

CVBS_Y

AGND

TEST

HSYNCN

VSYNCN

VDD

432

323130

W9952QP

14151617181920

SVIDEO

MASTER

MODE[3]

MODE[2]

CBSWAP

MODE[1]

DGND

29 28 27 26 25 24 23 22 21

MODE[0]

CLK P[7] P[6] P[5] P[4] P[3] P[2] P[1] P[0]