lf3370 LOGIC Devices Incorporated, lf3370 Datasheet

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lf3370

Manufacturer Part Number
lf3370
Description
High-definition Video Format Converter
Manufacturer
LOGIC Devices Incorporated
Datasheet
DEVICES INCORPORATED
FEATURES
LF3370 B
DEVICES INCORPORATED
83 MHz Data Rate for HDTV
Applications
Supports Multiple Video Formats
Bi-Directional Conversions:
Multiplexed and Non-multiplexed
I/O Data
User-Programmable:
13-bit Data Path, Colorspace
Converter Coefficients and Key
Channel Scaling Coefficients
160-lead PQFP
- 4:2:2:4
- 4:4:4:4
- R/G/B/Key
- Y/U/V/Key
- 3 x 3 Colorspace Converter
- LUT for Gamma Correction
- I/O Bias Compensation
- Bypass Capability
LOCK
COLORSPACE
CONVERTER/
KEY SCALER
D
IAGRAM
W
A
12-0
12-0
INPUT DE-MULTIPLEXER SECTION
OUTPUT MULTIPLEXER SECTION
OUTPUT BIAS ADDERS
INPUT BIAS ADDERS
55-TAP HALF-BAND
B
X
INTERPOLATION/
12-0
12-0
DECIMATION
FILTERS
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
High-Definition Video Format Converter
DESCRIPTION
C
Y
12-0
12-0
LOOK-UP-TABLES
D
Z
12-0
12-0
1K x 13-Bit
1
High-Definition Video Format Converter
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.
Video Imaging Products
LF3370
03/13/2001–LDS.3370-F
LF3370

Related parts for lf3370

lf3370 Summary of contents

Page 1

... W X 12-0 12-0 High-Definition Video Format Converter High-Definition Video Format Converter 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 Matrix Multiplier and two 1:2 Interpolation/2:1 Decimation Half-Band Filters ...

Page 2

... DEVICES INCORPORATED F 1. LF3370 F IGURE UNCTIONAL LIMIT SELECT ROUND High-Definition Video Format Converter LOCK IAGRAM ALF AND ILTER TO LIMIT LIMIT SELECT SELECT ROUND ROUND LIMIT LIMIT SELECT SELECT ROUND ROUND OLORSPACE RRANGEMENT LIMIT SELECT ROUND Video Imaging Products 03/13/2001– ...

Page 3

... DEVICES INCORPORATED F 2. LF3370 F IGURE UNCTIONAL LIMIT SELECT ROUND High-Definition Video Format Converter LOCK IAGRAM OLORSPACE TO LIMIT LIMIT SELECT SELECT ROUND ROUND LIMIT LIMIT SELECT SELECT ROUND ROUND ALF AND ILTER RRANGEMENT LIMIT SELECT ROUND Video Imaging Products 03/13/2001– ...

Page 4

... This signal is latched on the rising edge of CLK. DATAPASS — Datapass Mode DATAPASS is used to place the LF3370 in a mode of operation that allows the user to pass data through the core (Input/Output Bias Adders, LUTs, Hafband Interpolator/ Decimator, Colorspace/Key Scaler) without any processing. This signal is latched on the rising edge of CLK ...

Page 5

... RESET is used at power up or just after device configuration. This pin is latched on the rising edge of CLK. LF3370 Device Initialization This section explains how to initialize the device for proper operation. It also serves as a summary of all conditions that should be considered before using the device or for troubleshooting ...

Page 6

... If video data is non-interleaved and presented to input ports 12 demultiplexing is performed. 12-0 The three channels are passed unmodified into the LF3370 core with a delay of 3 CLK C C NTERLEAVED HROMA ON HANNEL ...

Page 7

... A 12-0 and outputs three channels of separated video into the LF3370 core with a delay of 5 CLK cycles. In this case, the core will run at half of the CLK rate and valid data will be output at at half of the CLK rate. ...

Page 8

... DEVICES INCORPORATED halfband filters to the data flowing through the LF3370. A latched HIGH to LOW transition on SYNC control signal is needed to initialize the device to mark the beginning of valid data. In addition, if 4:2:2 interleaved video data is desired for input or output, a HIGH to LOW transition on SYNC must be registered by a simultaneous rising edge of CLK and CLK/2 ...

Page 9

... Coef Bank Coef Bank 7 13 Coef Bank Coef Bank 9 9 LF3370 HF /HF and Counter and HF are two independent flags 0 1 that are set when the pre-programmed count value is equal to the 20 bit incrementing counter value. For each flag, one user-defined 20-bit count value can be programmed ...

Page 10

... First Operation Select in the Bypass Options duscussion). Half-Band Filter There are two internal Half-Band filters in the LF3370. These Half-Band filters can either interpolate, decimate, or pass through data found on channel B and channel C. Data on channel A and channel D in this section pass through a programmable 127 x 13-bit delay (see Bypass Section) ...

Page 11

... LUT per channel can be selected for use at any given time. The latency through a LUT section is 2 cycles. This latency is present on the datapath regard- less of whether the LUT is in use or not. When using a LUT, the appropriate addressed value will be passed Video Imaging Products LF3370 03/13/2001–LDS.3370-F ...

Page 12

... and Horizontal Blanking Levels MPULSE ESPONSE Decimal Equivalent –0.0008755 0 0.0013771 0 –0.00226593 0 0.0034885 0 –0.0053558 0 0.0076084 0 –0.01071167 0 0.0148182 0 –0.02018738 0 0.0279503 0 –0.0394993 0 0.05935097 0 –0.10360334 0 0.3179626 0.500846862 Video Imaging Products 03/13/2001–LDS.3370-F LF3370 Count Values, ...

Page 13

... The ten values are coefficients 0 through 8 and the Keyscale coefficient. When loading Configuration or Bias Registers, the interface will expect one value after the address value. When loading RSL registers, the interface will Video Imaging Products 03/13/2001–LDS.3370-F LF3370 ...

Page 14

... Data Bypass Mode ‘W’ Output Channel Mux Control 10-9 Look-Up Table Input Address Selection Control 11 Input Bias Disable 12 Output Bias Disable 14 LF3370 0 – A 200H DDRESS DESCRIPTION 00 : Reserved 01 : Single Channel Interleaved Video 10 : Dual Channel Interleaved Video Channel Non-Interleaved Video 00 : Reserved 01 : Single Channel Interleaved Video ...

Page 15

... BYPASS OPTIONS Core Bypass At all times during the normal operation of the LF3370, video data on channels and D are simultaneously being fed from the output of the Input Demultiplexer into the programmable Core Bypass Delay (see Figure 15). This ...

Page 16

... Matrix Multiplier/Key Scaler section will be used - its output will be routed directly to the output LUT section. Unlike in other bypassing options , the total pipeline latency of the LF3370 is reduced by the appropriate delay. If the Half-Band Filter section was bypassed by this method, the overall pipeline latency should be reduced by 35 CLK cycles ...

Page 17

... T 29 ABLE ORIZONTAL LANKING L A EVEL DDRESS CHANNEL ADDRESS (HEX) ‘A’ 0207 ‘B’ 0208 ‘C’ 0209 ‘D’ 020A 17 LF3370 T 18. C ‘C’ I ABLE HANNEL NPUT B R IAS EGISTERS REGISTER ADDRESS (HEX) 0 0800 1 0801 2 0802 3 0803 T 21. C ‘ ...

Page 18

... Video Imaging Products LF3370 ...

Page 19

... OADING COEF EVEL EGISTER OADING EQUENCE HBLANK LEVEL REGISTER W3 W4 DATA ADDR DATA DATA 1020 1021 1022 1023 S EQUENCE W1 ADDR COEF COEF PAUSE I EQUENCE WITH MPLEMENTATION COEF 9 Video Imaging Products 03/13/2001–LDS.3370-F LF3370 W1 W1 ...

Page 20

... Min – Min 8 Ground V 5.25 V (Note 12) IN Ground V 5.25 V (Note 12) OUT At Max Operating Frequency T = 25° MHz 25° MHz A 20 LF3370 Voltage Supply 3. 3. Min Typ Max Unit 2.4 V 0.4 V 2.0 5.5 V 0.0 0 µA 10 µA 100 mA ...

Page 21

... High-Definition Video Format Converter (0°C to +70°C) Notes 9, 10 (ns) (Note 11) (Note 11) I PWL t PWH N+1 t CYC CA N+1 t ENA t DIS HIGH IMPEDANCE 21 LF3370 LF3370– 12 Min Max Video Imaging Products 03/13/2001– ...

Page 22

... CLK PWH t CYC LD PAUSE t CFH t CFS ADDRESS CF 0 High-Definition Video Format Converter (0°C to +70°C) Notes 9, 10 (ns) TM NTERFACE PWL Min 5 Video Imaging Products 03/13/2001–LDS.3370-F LF3370 LF3370– 12 Max ...

Page 23

... CF12 PAUSE 40 Speed 0°C to +70°C — C OMMERCIAL 12 ns High-Definition Video Format Converter Top View Plastic Quad Flatpack (Q6) S CREENING LF3370QC12 23 LF3370 120 INBIAS1 119 INBIAS0 118 OUTBIAS1 117 OUTBIAS0 116 DATAPASS 115 HBLANK 114 RESET 113 SYNC 112 GND ...

Page 24

... DEVICES INCORPORATED Contact factory for additional information. applications hotline High-Definition Video Format Converter DEVICES INCORPORATED 1320 Orleans Drive Sunnyvale, CA 94089 tel. 800.851.0767 408.542.5400 fax. 408.542.0080 www.logicdevices.com apps@logicdevices.com 408.542.5446 (08:00 17:00 Pacific) 24 LF3370 Video Imaging Products 03/13/2001–LDS.3370-F ...

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