Datasheet > LF3330

LF3330

更新时间： 2022-12-11 20:38:24

品牌	Logo	应用领域
逻辑 - LOGIC		过滤器
页数	文件大小	规格书
15页	140K
描述
Vertical Digital Image Filter

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LF3330 数据手册

LF3330

DEVICES INCORPORATED

Vertical Digital Image Filter

LF3330

Vertical Digital Image Filter

DEVICES INCORPORATED

FEATURES

DESCRIPTION

The LF3330 filters digital images in

the vertical dimension at real-time

video rates. The input and coefficient

data are both 12 bits and in two’s

complement format. The output is

also in two’s complement format and

may be rounded to 16 bits.

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.

❑ 83 MHz Data Rate

❑ 12-bit Data and Coefficients

❑ On-board Memory for 256

Coefficient Sets

❑ LF Interface^TMAllows All 256

Coefficient Sets to be Updated

Within Vertical Blanking

The filter is an 8-tap FIR filter with all The LF3330 contains enough on-board

❑ Selectable 16-bit Data Output with

User-Defined Rounding and

Limiting

required line buffers contained on-

chip. The line buffers can store video

lines with lengths from 4 to 3076

pixels.

memory to store 256 coefficient sets.

The LF Interface^TMallows all 256

coefficient sets to be updated within

vertical blanking.

❑ Seven 3K x 12-bit, Programmable

Two-Mode Line Buffers

Multiple LF3330s can be cascaded

together to create larger vertical

filters.

Selectable 16-bit data output with

user-defined rounding and limiting

minimizes the constraints put on

coefficient sets for various filter

implementations.

❑ Separate Input Port for Odd and

Even Field Filtering

❑ 8 Filter Taps

❑ Cascadable for More Filter Taps

❑ Supports Interleaved Data Streams

❑ 3.3 Volt Power Supply

❑ 5 Volt Tolerant I/ O

Due to the length of the line buffers,

interleaved data can be fed directly

into the device and filtered without

❑ 100 Lead PQFP

LF3330 BLOCK DIAGRAM

DIN11-0

3K LINE BUFFER

ROUND

SELECT

LIMIT

DOUT15-0

3K LINE BUFFER

VB11-0

CIRCUITRY

OED

3K LINE BUFFER

COUT11-0

OEC

Video Imaging Products

11/08/2001–LDS.3330-M

12 3 4 5 6 7...15

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