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LF3347

Description
High-Speed Image Filter with Coefficient RAM
File Size98KB,10 Pages
ManufacturerLOGIC Devices
Websitehttp://www.logicdevices.com/
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LF3347 Overview

High-Speed Image Filter with Coefficient RAM

LF3347
DEVICES INCORPORATED
High-Speed Image Filter with Coefficient RAM
LF3347
DEVICES INCORPORATED
High-Speed Image Filter with Coefficient RAM
DESCRIPTION
The
LF3347
consists of an array of
four 12 x 12-bit registered multipliers
followed by two summers and a
32-bit accumulator. The LF3347
provides four 256 x 12-bit coefficient
banks which are capable of storing
256 different sets of filter coefficients
for the multiplier array. All multi-
plier data inputs are user accessible
and can be updated every clock cycle
with two’s complement 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.
A 32-bit accumulator allows cumula-
tive word growth which may be
internally rounded to 16-bits. Output
data is updated every clock cycle and
may be held under user control. The
data inputs/outputs and control
inputs are registered on the rising
edge of CLK. The Control/Coeffi-
cient Data Input,
CC
11-0
, is registered
on the rising edge of CCCLK.
The LF3347 is ideal for performing
pixel interpolation in image manipu-
lation and filtering applications. The
LF3347 can perform a bilinear inter-
polation of an image (4-pixel kernels)
at real-time video rates when used
FEATURES
u
83 MHz Data Input and Compu-
tation Rate
u
Four 12 x 12-bit Multipliers with
Individual Data and Coefficient
Inputs
u
Four 256 x 12-bit Coefficient Banks
u
32-bit Accumulator
u
Selectable 16-bit Data Output with
User-Defined Rounding and Limiting
u
u
u
u
Two’s Complement Operands
3.3 Volt Power Supply
5 Volt Tolerant I/O
120-pin PQFP
LF3347 B
LOCK
D
IAGRAM
12
CC
11-0
LD
CCCLK
ENBA
8
A
7-0
Coefficient
Bank 1
(256 x 12-bit)
ENB
1
12
2
D2
11-0
12
2
ENB
2
12
Coefficient
Bank 2
(256 x 12-bit)
D3
11-0
12
2
ENB
3
12
Coefficient
Bank 3
(256 x 12-bit)
D4
11-0
12
2
ENB
4
12
Coefficient
Bank 4
(256 x 12-bit)
LF
INTERFACE
D1
11-0
12
25
25
ACC
3
32
SELRND
3-0
4
4
4
Rounding
Selecting
Limiting
Circuit
Rounding/
Limiting
Registers
SELLMT
3-0
4
6
4
LMTEN
6
SHIFT
4-0
5
5
5
16
OCEN
OE
16
CLK
TO ALL REGISTERS
S
15-0
NOTE: NUMBERS IN REGISTERS INDICATE
NUMBER OF PIPELINE DELAYS
Video Imaging Products
1
08/16/2000–LDS.3347-G

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LF3347 LF3347QC15 LF3347QC12
Description High-Speed Image Filter with Coefficient RAM High-Speed Image Filter with Coefficient RAM High-Speed Image Filter with Coefficient RAM
Is it lead-free? - Contains lead Contains lead
Is it Rohs certified? - incompatible incompatible
Maker - LOGIC Devices LOGIC Devices
Parts packaging code - QFP QFP
package instruction - QFP, QFP120,1.2SQ,32 QFP, QFP120,1.2SQ,32
Contacts - 120 120
Reach Compliance Code - compli compli
ECCN code - 3A001.A.3 3A001.A.3
Other features - 2\'S COMPLEMENT 2\'S COMPLEMENT
boundary scan - NO NO
maximum clock frequency - 66.6666 MHz 83.3333 MHz
External data bus width - 12 12
JESD-30 code - S-PQFP-G120 S-PQFP-G120
JESD-609 code - e0 e0
length - 28 mm 28 mm
low power mode - NO NO
Humidity sensitivity level - 3 3
Number of terminals - 120 120
Maximum operating temperature - 70 °C 70 °C
Output data bus width - 16 16
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - QFP QFP
Encapsulate equivalent code - QFP120,1.2SQ,32 QFP120,1.2SQ,32
Package shape - SQUARE SQUARE
Package form - FLATPACK FLATPACK
Peak Reflow Temperature (Celsius) - NOT SPECIFIED NOT SPECIFIED
power supply - 3.3 V 3.3 V
Certification status - Not Qualified Not Qualified
Maximum seat height - 4.1 mm 4.1 mm
Maximum slew rate - 150 mA 150 mA
Maximum supply voltage - 3.6 V 3.6 V
Minimum supply voltage - 3 V 3 V
Nominal supply voltage - 3.3 V 3.3 V
surface mount - YES YES
technology - CMOS CMOS
Temperature level - COMMERCIAL COMMERCIAL
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form - GULL WING GULL WING
Terminal pitch - 0.8 mm 0.8 mm
Terminal location - QUAD QUAD
Maximum time at peak reflow temperature - NOT SPECIFIED NOT SPECIFIED
width - 28 mm 28 mm
uPs/uCs/peripheral integrated circuit type - DSP PERIPHERAL, DIGITAL FILTER DSP PERIPHERAL, DIGITAL FILTER
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