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LF2250QC25 PDF预览

LF2250QC25

更新时间: 2024-11-21 22:31:23
品牌 Logo 应用领域
逻辑 - LOGIC 外围集成电路输入元件时钟
页数 文件大小 规格书
15页 370K
描述
12 x 10-bit Matrix Multiplier

LF2250QC25 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Contact Manufacturer零件包装代码:QFP
包装说明:QFP, QFP120,1.2SQ,32针数:120
Reach Compliance Code:compliantECCN代码:3A991.A.2
HTS代码:8542.39.00.01风险等级:5.31
其他特性:3 X 12 BIT DATA AND 3 X 10 BIT COEFFICIENT INPUT BUSES; 2 X 12 BIT AND 3 X 4 BIT DATA OUT BUSES边界扫描:NO
最大时钟频率:40 MHz外部数据总线宽度:12
JESD-30 代码:S-PQFP-G120JESD-609代码:e0
长度:28 mm低功率模式:NO
湿度敏感等级:3端子数量:120
最高工作温度:70 °C最低工作温度:
输出数据总线宽度:12封装主体材料:PLASTIC/EPOXY
封装代码:QFP封装等效代码:QFP120,1.2SQ,32
封装形状:SQUARE封装形式:FLATPACK
峰值回流温度(摄氏度):NOT SPECIFIED电源:5 V
认证状态:Not Qualified座面最大高度:4.1 mm
子类别:DSP Peripherals最大压摆率:160 mA
最大供电电压:5.25 V最小供电电压:4.75 V
标称供电电压:5 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.8 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:28 mm
uPs/uCs/外围集成电路类型:DSP PERIPHERAL, MULTIPLIERBase Number Matches:1

LF2250QC25 数据手册

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DEVICES INCORPORATED  
FEATURES  
LF2250  
12 x 10-bit Matrix Multiplier  
DESCRIPTION  
selects the necessary internal bus  
structure and inserts the appropriate  
data path delay elements. In addition,  
a 16-bit cascade input port allows for  
the creation of larger filters without a  
reduction in throughput.  
The LF2250 is a high-speed matrix  
multiplier consisting of an array of  
nine 12 x 10-bit multipliers. Internal  
summing adders are also included to  
provide the configurations needed to  
implement matrix multiplications,  
cascadable FIR filters, and pixel  
convolvers.  
50 MHz Data and Computation  
Rate  
Nine Multiplier Array with 12-bit  
Data and 10-bit Coefficient Inputs  
Separate 16-bit Cascade Input and  
Output Ports  
On-board Coefficient Storage  
Four User-Selectable Filtering and  
Transformation Functions:  
Real-time video image filtering using  
the convolver modes of the LF2250 can  
provide edge detection, texture  
enhancement, and detail smoothing.  
Both pixel convolver configurations,  
The 3 x 3 matrix multiplier (triple dot  
product) configuration of the LF2250  
allows users to easily perform three-  
• 3 x 3 Matrix Multiplier  
• Cascadable 9-Tap FIR Filter  
• Cascadable 3 x 3 Convolver  
• Cascadable 4 x 2 Convolver  
dimensional perspective translations or 3 x 3 and 4 x 2, deliver high-speed data  
video format conversions at real-time  
video rates. By using the LF2250 in  
this configuration, conversions can be  
made from the RGB (color component)  
manipulation in a single chip solution.  
By using the 16-bit cascade input port  
to cascade two devices, cubic convolu-  
tions (4 x 4-pixel) can be easily accom-  
Replaces TRW/Raytheon/  
Fairchild TMC2250  
120-pin PQFP  
format to the YIQ (quadrature encoded modated with no decrease in through-  
chrominance) or YUV (color differ-  
ence) formats and vice versa (YIQ or  
YUV to RGB).  
put rates.  
All inputs and outputs, as well as all  
control lines, are registered on the  
rising edge of clock. The LF2250  
operates at clock rates up to 50 MHz  
over the full commercial temperature  
and supply voltage ranges.  
In addition to color space conversions,  
the LF2250 offers a range of selectable  
configurations designed for filtering  
applications. When configured as a  
9-tap FIR filter, the LF2250 automatically  
LF2250 BLOCK DIAGRAM  
CLK  
2
DATA  
OUTPUTS  
CASCADE  
PORTS  
PIN  
NAME  
MODE1-0  
2
CWE1-0  
12  
X
Y
Y
Y
11-0  
11-8  
7-4  
CASIN15-4  
CASIN3-0  
XC11-0  
YC11-8  
12  
4
4
A11-0  
B11-0  
C11-0  
DATA  
12  
12  
Y7-4  
INPUTS  
{
{
4
3-0  
CASOUT3-0  
CASOUT15-4  
YC3-0  
12  
Z
11-0  
ZC11-0  
10  
10  
10  
KA9-0  
KB9-0  
KC9-0  
9-MULTIPLIER  
ARRAY  
COEFFICIENT  
INPUTS  
Video Imaging Products  
08/16/2000–LDS.2250-L  
1

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