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
8
Up
Sampl-
8
ing
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]
WINBOND [ WINBOND ]
