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CS4955 Datasheet

  • CS4955

  • NTSC/PAL Digital Video Encoder

  • 58頁(yè)

  • CIRRUS

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CS4954
CS4955
NTSC/PAL Digital Video Encoder
Features
l
Six
Description
DACs providing simultaneous composite,
The CS4954/5 provides full conversion from digital video
formats YCbCr or YUV into NTSC and PAL Composite,
S-video, and RGB or Component YUV
Y/C (S-video) and RGB, or YUV analog video. Input for-
outputs
mats can be 27 MHz 8-bit YUV, 8-bit YCbCr, or ITU
l
Programmable DAC output currents for low
R.BT656 with support for EAV/SAV codes. Video output
imped-ance (37.5
鈩?
and high impedance
can be formatted to be compatible with NTSC-M, NTSC-
(150
鈩?
loads.
J, PAL-B,D,G,H,I,M,N, and Combination N systems.
Closed Caption is supported in NTSC. Teletext is sup-
l
Multi-standard support for NTSC-M, NTSC-
ported for NTSC and PAL.
JAPAN, PAL (B, D, G, H, I, M, N,
Combination N)
Six 10-bit DACs provide two channels for an S-Video
output port, one or two composite video outputs, and
l
ITU R.BT656 input mode supporting
EAV/SAV codes and CCIR601 Master/Slave
three RGB or YUV outputs. Two-times oversampling re-
duces the output filter requirements and guarantees no
input modes
DAC-related modulation components within the speci-
l
Programmable HSYNC and VSYNC timing
fied bandwidth of any of the supported video standards.
l
Multistandard Teletext (Europe, NABTS,
Parallel or high-speed I
2
C compatible control interfaces are
WST) support
provided for flexibility in system design. The parallel interface
l
VBI encoding support
doubles as a general purpose I/O port when the CS4954/5 is
2
l
Wide-Screen Signaling (WSS) support, EIA-J
in I C mode to help conserve valuable board area.
CPX1204
ORDERING INFORMATION
l
NTSC closed caption encoder with interrupt
CS4954-CQ
48-pin TQFP
CS4955-CQ
48-pin TQFP
l
CS4955 supports Macrovision copy
protection Version 7
l
Host interface configurable
VAA
for parallel or I
2
C
CLK
Output
LPF
10-Bit
SCL
I
2
C Interface
C
Interpolate
DAC
SDA
compatible operation
8
Control
10-Bit
Chroma Amplifier
危
l
On-chip voltage reference
PDAT[7:0]
CVBS
DAC
Registers
Host
RD
Parallel
generator
Chroma Modulate
WR
10-Bit
Interface
Y
DAC
ADDR
l
+3.3 V or +5 V operation,
Burst Insert
XTAL_IN
10-Bit
Color Sub-carrier Synthesizer
CMOS, low-power modes,
R
XTAL_OUT
DAC
Chroma Interpolate
tri-state DACs
10-Bit
TTXDAT
TTXRQ
8
VD[7:0]
HSYNC
VSYNC
FIELD
INT
RESET
Video Formatter
Video Timing
Generator
Y Luma Interpolate
Voltage
Reference
Current
Reference
TEST
VREF
ISET
Teletext
Encoder
YCbCr to RBG
Color Space
Converter
U,V
LPF
DAC
10-Bit
DAC
G
B
Luma Amplifier
Y
Y
Sync Insert
RGB
RGB
DGND
Preliminary Product Information
Cirrus Logic, Inc.
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.crystal.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright
漏
Cirrus Logic, Inc. 1999
(All Rights Reserved)
APR 鈥?9
DS278PP4
1

CS4955 PDF文件相關(guān)型號(hào)

CS4955-CQZ

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