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| W9952QP TV ENCODER GENERAL DESCRIPTION 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. FUNCTIONAL BLOCK Sync/ Blank/ Pedestal P[7:0] FSADJ VREF_IN CBSWAP Color Space Converter + 1.3 MHz Low Pass Filter + Mux Modu lator Mux Up Sampl8 ing 8 COMP DAC DAC Y C CLK MASTER SLEEP MODE[3:0] Video Timing Generator DTO Bandgap Voltage Reference VREF _OUT VSYNCN HSYNCN TEST SVIDEO 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 CLK CVBS Y / FEATURES * Full multi-standard digital encoder support for 525-line (M) NTSC/ PAL or 625-line PAL ( B, D, 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 * 32-pin PLCC package DESKTOP HSYNCN VIDEO VSYNCN W9952QP CVBS/ C Fig. 2 W9952QP Application HSYNCN VSYNCN CVBS_Y DGND 30 29 28 27 26 AGND TEST 32 FSADJ COMP VAA VREF_OUT VREF_IN NC CVBS_C AGND SLEEP 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 31 4 3 2 1 VDD CLK P[7] P[6] P[5] P[4] P[3] P[2] P[1] P[0] W9952QP 25 24 23 22 21 CBSWAP MASTER SVIDEO MODE[3] MODE[2] MODE[1] Winbond Corporate Headquarters Tel : 886-3-5790666 Fax : 886-3-5796139 Taipei Sales Office Tel : 886-2-27190505 Fax : 886-2-27197502 Winbond Electronics North America Corp. Tel : 1-408-943666 Fax : 1-408-9436668 Winbond Electronics H.K. Ltd. Tel : 852-27513100 Fax : 852-27552064 May 1997 Details are subject to change without notice. All trademarks are property of their respective holders. MODE[0] |
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