W9952QP Datasheet, PDF (1/1 Pages) Winbond – TV ENCODER

W9952QP
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
TV ENCODER
FUNCTIONAL BLOCK
P[7:0]
CBSWAP
CLK
MASTER
SLEEP
MODE[3:0]
Sync/ Blank/ Pedestal
FSADJ
Color
Space
Converter
+
1.3 MHz
Low
Pass
Filter
+
8
Mux
Up
DAC
Modu -
lator
Mux
Sampl-
ing
8
DAC
VREF_IN
COMP
Y
C
Video DTO
Timing
Generator
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
DESKTOP ^HSYNCN
VIDEO
W9952QP
CVBS/ C
VSYNCN
Fig. 2 W9952QP Application
FSADJ 5
COMP 6
VAA 7
VREF_OUT 8
VREF_IN 9
NC 10
CVBS_C 11
AGND 12
SLEEP ₁₃
W9952QP
29
CLK
28
P[7]
27
P[6]
26
P[5]
25
P[4]
24
P[3]
23
P[2]
22
P[1]
21
P[0]
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Winbond Electronics North America Corp.
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Details are subject to change without notice. All trademarks are property of their respective holders.
Winbond Electronics H.K. Ltd.
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Fax : [phone]
May 1997