LF3338 datasheet(1/15 Pages) LODEV

부품명	LF3338

상세설명	8-Bit Vertical Digital Image Filter

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제조업체	LODEV [LOGIC Devices Incorporated]

홈페이지	http://www.logicdevices.com

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DEVICES INCORPORATED

Video Imaging Products

1

LF3338

8-Bit Vertical Digital Image Filter

04/06/1999–LDS.3338-B

u

u 83 MHz Data Rate

u

u 8-bit Data and 12-bit Coefficients

u

u Supports Interleaved Data Streams

u

u Cascadable for More Filter Taps

u

u Seven 3K x 8-bit, Dynamic Program-

mable Two-Mode Line Buffers

u

u On-board Memory for 256

Coefficient Sets

u

u LF InterfaceTM Allows All 256

Coefficient Sets to be Updated

Within Vertical Blanking

u

u Selectable 16-bit Data Output with

User-Defined Rounding and

Limiting

u

u Separate Input Port for Odd and

Even Field Filtering

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u 8 Filter Taps

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u 3.3 Volt Power Supply

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u 5 Volt Tolerant I/O

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u Purchase Description

FEATURES

DESCRIPTION

The LF3338 is a lower cost version of

the 12-bit LF3330 and is suited for

multimedia and special effects systems,

projectors, plasma display panels, scan

converters, set-top boxes, and other

consumer applications.

This device filters digital images in

the vertical dimension at real-time

video rates. Input data is 8 bits and

coefficient data is 12 bits and both are

in two’s complement format. The

output is also in two’s complement

format and may be rounded to 16 bits.

The filter is an 8-tap FIR filter with all

required line buffers contained on-

chip. The line buffers can store video

lines with lengths from 4 to 3076

pixels. Multiple LF3338s can be

cascaded together to create larger

vertical filters.

Due to the length of the line buffers,

interleaved data can be fed directly

into the device and filtered without

separating the data into individual

data streams. The number of inter-

leaved data sets that the device can

handle is limited only by the length of

the on-chip line buffers. If the inter-

leaved video line has 3076 data values

or less, the filter can handle it.

The LF3338 contains enough on-board

memory to store 256 coefficient sets.

The LF InterfaceTM allows all 256

coefficient sets to be updated within

vertical blanking.

Selectable 16-bit data output with

user-defined rounding and limiting

minimizes the constraints put on

coefficient sets for various filter

implementations.

LF3338 BLOCK DIAGRAM

LF3338

8-Bit Vertical Digital Image Filter

DEVICES INCORPORATED

DIN7-0

3K LINE BUFFER

8

3K LINE BUFFER

ROUND

SELECT

LIMIT

CIRCUITRY

OED

16

DOUT15-0

8

COUT7-0

32

VB7-0

8

OEC

유사한 부품 번호 - LF3338

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LOGIC Devices Incorpora...	LF3330	138Kb / 15P	Vertical Digital Image Filter
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LF3338 데이터시트(PDF) 1 Page - LOGIC Devices Incorporated

LF3338 데이터시트(HTML) 1 Page - LOGIC Devices Incorporated

유사한 부품 번호 - LF3338

유사한 설명 - LF3338

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