CS4952 Datasheet, PDF (1/44 Pages) Cirrus Logic – NTSC/PAL Digital Video Encoder

CS4952/53
NTSC/PAL Digital Video Encoder
Features
l Simultaneous composite and S-video output
l Supports RS170A and CCIR601 composite
output timing
l Multi-standard support for NTSC-M, PAL (B, D,
G, H, I, M, N, Combination N)
l Optional progressive scan @ MPEG2 field rates
l CCIR656 input mode supporting EAV/SAV
codes and CCIR601 Master/Slave input modes
l Stable color subcarrier for MPEG2 systems
l NTSC closed caption encoder with interrupt
l Supports Macrovision copy protection in
CS4953 version
l Host interface configurable for parallel or I²C
compatible operation
l General purpose input and output pins
l Individual DAC power-down capability
l On-chip voltage reference generator
l On-chip color bar generator
l +5 volt only, CMOS, low power modes, tri-state
DACs
Description
The CS4952/3 provides full conversion from YCbCr or
YUV digital video formats into NTSC & PAL Composite
and Y/C (S-video) analog video. Input formats can be
27 MHz 8-bit YUV, 8-bit YCbCr, or CCIR656 with sup-
port for EAV/SAV codes. Output video can be formatted
to be compatible with NTSC-M, or PAL B,D,G,H,I,M,N,
and Combination N systems. Also supported is NTSC
line 21 and line 284 closed captioning encoding.
Four 9-bit DACs provide two channels for an S-Video out-
put port and two composite video outputs. 2x oversampling
reduces the output filter requirements and guarantees
no DAC related modulation components within the spec-
ified bandwidth of any of the supported video standards.
Parallel or high speed I²C compatible control interfaces
are provided for flexibility in system design. The parallel
interface doubles as a general purpose I/O port when the
CS4952/3 is in I²C mode to help conserve valuable
board area.
ORDERING INFORMATION
CS4952/3-CL 44 pin PLCC
CS4952/3-CQ 44 pin TQFP
CLK
SCL
SDA
8
PDAT[7:0]
RD*
WR*
I ²C
Interface
Host
Parallel
Interface
Control
Registers
ADDR
XTAL
Color Sub-carrier
Synthesizer
VAA
Output
Interpolate
LPF
Chroma Amplifier
Chroma Modulate
Σ
Burst Insert
Chroma Interpolate
9-Bit
DAC
9-Bit
DAC
9-Bit
DAC
9-Bit
DAC
C
CVBS37
CVBS75
Y
8
VD[7:0]
Video
Formatter
U, V
Y
LPF
Luma Delay
HSYNC*
VSYNC*
FIELD
INT
RESET*
Video Timing
Generator
Luma Amplifier
Sync Insert
Output
Interpolate
LPF
GND
Voltage
Reference
Current
Reference
TEST
VREFIN
VREFOUT
ISET
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Cirrus Logic, Inc.
Crystal Semiconductor Products Division
P.O. Box 17847, Austin, Texas 78760
[phone] FAX: [phone]
http://www.crystal.com
Copyright © Cirrus Logic, Inc. 1997
(All Rights Reserved)
OCT ‘97
DS223PP2
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