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LF3370QC12 Datenblatt(PDF) 1 Page - LOGIC Devices Incorporated

Teilenummer LF3370QC12
Bauteilbeschribung  High-Definition Video Format Converter
Download  24 Pages
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Hersteller  LODEV [LOGIC Devices Incorporated]
Direct Link  http://www.logicdevices.com
Logo LODEV - LOGIC Devices Incorporated

LF3370QC12 Datenblatt(HTML) 1 Page - LOGIC Devices Incorporated

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Video Imaging Products
1
LF3370
High-Definition Video Format Converter
03/13/2001–LDS.3370-F
DEVICES INCORPORATED
COLORSPACE
CONVERTER/
KEY SCALER
INPUT DE-MULTIPLEXER SECTION
55-TAP HALF-BAND
INTERPOLATION/
DECIMATION
FILTERS
OUTPUT MULTIPLEXER SECTION
B12-0
C12-0
A12-0
D12-0
X12-0
Y12-0
W12-0
Z12-0
1K x 13-Bit
LOOK-UP-TABLES
INPUT BIAS ADDERS
OUTPUT BIAS ADDERS
FEATURES
LF3370
High-Definition Video Format Converter
DEVICES INCORPORATED
u
u
u
u
u 83 MHz Data Rate for HDTV
Applications
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u
u Supports Multiple Video Formats
Bi-Directional Conversions:
- 4:2:2:4
- 4:4:4:4
- R/G/B/Key
- Y/U/V/Key
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u Multiplexed and Non-multiplexed
I/O Data
u
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u User-Programmable:
- 3 x 3 Colorspace Converter
- LUT for Gamma Correction
- I/O Bias Compensation
- Bypass Capability
u
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u 13-bit Data Path, Colorspace
Converter Coefficients and Key
Channel Scaling Coefficients
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u 160-lead PQFP
DESCRIPTION
The LF3370 is a video format
converter capable of operating at
HDTV data rates. This device
converts to and from any of the
various SDTV/HDTV digital video
formats by utilizing an internal
3 x 3 Matrix Multiplier and two
1:2 Interpolation/2:1 Decimation
Half-Band Filters.
Using the Input Demultiplexer
and Output Multiplexer, the
LF3370 can accept and output
interleaved or non-interleaved
video. For example, R/G/B/Key
data can be color space converted
to Y/U/V/Key and down-con-
verted to 4:2:2:4. By re-arranging
the order of the functional sec-
tions, the opposite conversion can
be achieved. The coefficients for
the 3 x 3 Matrix Multiplier are
fully user programmable to sup-
port a wide range of color space
conversions. The two Interpola-
tion/Decimation Half-Band Filters
are fully compliant with SMPTE
260M.
Input and Output Bias Adders are
included for removing or adding a
user-defined bias into the video
signal. In addition, three pro-
grammable 1K x 13-bit Look-Up
Tables (LUTs) have also been
included for various uses such as
gamma correction. A Scaler has
been included on the Key Channel
for scaling to a desired magnitude
using user programmable coeffi-
cients.
Input signals can also be forced to
user-defined levels for horizontal
blanking. Furthermore, Round/
Select/Limit (RSL) circuitry is
provided at the end of various
stages to provide the best possible
conversions without color viola-
tions. For additional flexibility,
the Halfband Filter can be indi-
vidually bypassed using an inter-
nal programmable length delay.
All control and coefficient registers
are loaded through the LF Inter-
face™.
This device operates at 3.3 V (5 V
tolerant I/O) and is available in
160-lead PQFP package.
LF3370 BLOCK DIAGRAM


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