Datasheet > LF2246

LF2246

更新时间： 2024-09-23 22:31:23

品牌	Logo	应用领域
逻辑 - LOGIC		过滤器
页数	文件大小	规格书
7页	250K
描述
11 x 10-bit Image Filter

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LF2246 数据手册

LF2246

DEVICES INCORPORATED

11 x 10-bit Image Filter

LF2246

11 x 10-bit Image Filter

DEVICES INCORPORATED

FEATURES

DESCRIPTION

The LF2246 consists of an array of

outputs, and controls are registered

four 11 x 10-bit registered multipliers on the rising edge of clock, except for

❑ 66 MHz Data and Coefficient Input

and Computation Rate

followed by a summer and a 25-bit

accumulator. All multiplier inputs

are user accessible and can be up-

dated every clock cycle with either

fractional or integer two’s comple-

ment data. The pipelined architecture

has fully registered input and output

ports and an asynchronous three-state

output enable control to simplify the

design of complex systems. The

pipeline latency for all inputs is five

clock cycles.

OEN. The LF2246 operates at a clock

rate of 66 MHz over the full tempera-

ture and supply voltage ranges.

❑ Four 11 x 10-bit Multipliers with

Individual Data and Coefficient

Inputs and a 25-bit Accumulator

The LF2246 is applicable for perform-

ing pixel interpolation in image

manipulation and filtering applica-

tions. The LF2246 can perform a

bilinear interpolation of an image (4-

pixel kernels) at real-time video rates

when used with an image resampling

sequencer. Larger kernels or more

complex functions can be realized by

utilizing multiple devices.

❑ User-Selectable Fractional or

Integer Two’s Complement Data

Formats

❑ Fully Registered, Pipelined Archi-

tecture

❑ Input and Output Data Registers,

with User-Configurable Enables

❑ Three-State Outputs

❑ Fully TTL Compatible

Storage for mixing and filtering

❑ Ideally Suited for Image Processing

coefficients can be accomplished by

holding the data or coefficient inputs

over multiple clock cycles. A 25-bit

accumulator path allows cumulative

word growth which may be internally

rounded to 16 bits. Output data is

updated every clock cycle and may be

held under user control. All inputs,

Unrestricted access to all data and

coefficient input ports provides the

LF2246 with considerable flexibility in

applications such as digital filters,

adaptive FIR filters, mixers, and other

similar systems requiring high-speed

processing.

and Filtering Applications

❑ Replaces TRW/Raytheon/Fairchild

TMC2246

❑ 120-pin PQFPP

LF2246 BLOCK DIAGRAM

D19–0

C110–0

ENB1

D29–0

C210–0

ENB2

D39–0

C310–0

ENB3

D49–0

C410–0

ENB4

ENSEL

ACC

OCEN

FSEL

OEN

CLK

TO ALL REGISTERS

S15–0

Video Imaging Products

08/16/2000–LDS.2246-K

2-11

12 3 4 5 6 7

中文翻译

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与LF2246相关器件

型号	品牌	获取价格	描述	数据表
LF2246GC15	LOGIC	获取价格	Digital Filter, 10-Bit, CMOS, CPGA120, CERAMIC, PGA-120
LF2246GC33	ETC	获取价格	Digital Filter
LF2246GM25	ETC	获取价格	Digital Filter
LF2246GM33	ETC	获取价格	Digital Filter
LF2246GMB25	ETC	获取价格	Digital Filter
LF2246GMB33	ETC	获取价格	Digital Filter
LF2246QC15	LOGIC	获取价格	11 x 10-bit Image Filter
LF2246QC25	LOGIC	获取价格	11 x 10-bit Image Filter
LF2246QC33	ETC	获取价格	Digital Filter
LF2246QI15	ETC	获取价格	Digital Filter