W9952QP
TV ENCODER
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
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.
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
FUNCTIONAL BLOCK
DAC
Color
Space
Converter
Video
Timing
Generator
Sync/ Blank/ Pedestal
MASTER
CBSWAP
SLEEP
TEST
VSYNCN HSYNCN
C
VREF
_OUT
COMP
Y
P[7:0]
VREF_IN
FSADJ
CLK
Bandgap
Voltage
Reference
DTO
8
Up
Sampl-
ing
8
MODE[3:0]
SVIDEO
Modu -
lator
1.3 MHz
Low
Pass
Filter
Mux
Mux
DAC
+
+
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.
W9952QP
CVBS
/ Y
CVBS/ C
P[7:0]
CLK
HSYNCN
VSYNCN
MPEG1/2
DESKTOP
VIDEO
Fig. 2 W9952QP Application
FSADJ
COMP
VAA
VREF_OUT
VREF_IN
NC
CVBS_C
AGND
CVBS_Y
AGND
TEST
HSYNCN
VSYNCN
VDD
5
6
7
8
9
10
11
12
13
4
3
2
1
32
31
30
DGND
W9952QP
14
15
16
17
18
19
20
26
25
24
23
22
21
27
28
29
SLEEP
CBSWAP
SVIDEO
MASTER
MODE[3]
MODE[2]
MODE[1]
MODE[0]
P[7]
P[6]
P[5]
P[4]
P[3]
P[2]
P[1]
P[0]
CLK
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