lf3330 LOGIC Devices Incorporated, lf3330 Datasheet

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lf3330

Manufacturer Part Number
lf3330
Description
Vertical Digital Image Filter
Manufacturer
LOGIC Devices Incorporated
Datasheet
DEVICES INCORPORATED
FEATURES
LF3330 B
DEVICES INCORPORATED
83 MHz Data Rate
12-bit Data and Coefficients
On-board Memory for 256
Coefficient Sets
LF Interface
ficient Sets to be Updated Within
Vertical Blanking
Selectable 16-bit Data Output with
User-Defined Rounding and Limit-
ing
Seven 3K x 12-bit, Programmable
Two-Mode Line Buffers
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
100 Lead PQFP
DIN
VB
11-0
11-0
LOCK
TM
Allows All 256 Coef-
12
12
D
IAGRAM
3K LINE BUFFER
3K LINE BUFFER
3K LINE BUFFER
3K LINE BUFFER
3K LINE BUFFER
3K LINE BUFFER
3K LINE BUFFER
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 comple-
ment 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 LF3330s 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
DESCRIPTION
1
Vertical Digital Image Filter
32
CIRCUITRY
SELECT
ROUND
LIMIT
Vertical Digital Image Filter
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 LF3330 contains enough on-board
memory to store 256 coefficient sets.
The LF Interface
ficient sets to be updated within verti-
cal blanking.
Selectable 16-bit data output with
user-defined rounding and limiting
minimizes the constraints put on coef-
ficient sets for various filter imple-
mentations.
SIGNAL DEFINITIONS
Video Imaging Products
OED
OEC
TM
16
12
LF3330
allows all 256 coef-
DOUT
COUT
9/19/2005–LDS.3330-N
11-0
15-0
LF3330

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lf3330 Summary of contents

Page 1

... LINE BUFFER 3K LINE BUFFER 3K LINE BUFFER Vertical Digital Image Filter 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 comple- ment format. The output is also in two’s complement format and may be rounded to 16 bits ...

Page 2

... DEVICES INCORPORATED F 1. LF3330 F IGURE UNCTIONAL B D LOCK IAGRAM LIMIT SELECT ROUND 2 LF3330 Vertical Digital Image Filter Video Imaging Products 9/19/2005–LDS.3330-N ...

Page 3

... CEN — Coefficient Address Enable When CEN is LOW, data latched into the Coefficient Address Register on the rising edge of CLK. When CEN is HIGH, data on CA not latched and the register’s contents will not be changed. Video Imaging Products LF3330 ...

Page 4

... A value RSL selects round/select/ 3-0 limit register 0. A value of 1 selects round/select/limit register 1 and so on. RSL is latched on the rising 3-0 edge of CLK (see the round, select, 4 LF3330 Vertical Digital Image Filter F 4. RSL C IGURE IRCUITRY RSL DATA IN 3 ...

Page 5

... When cascading devices, the first LF3330 should have Bit 0 of Configuration Register 3 set to “0”. Any LF3330s cascaded after the first LF3330 should have Bit 0 of Configu- ...

Page 6

... LF Inter- face section. TM Limiting An output limiting function is pro- vided for the output of the filter. COEFFICIENT SET 3 W2 COEF ADDR COEF COEF LIMIT REGISTER W4 ADDR DATA DATA DATA DATA Video Imaging Products LF3330 3-0 and 3-0 W3 9/19/2005–LDS.3330-N ...

Page 7

... LF Interface Coefficient bank loading is discussed in the LF Interface section. TM Configuration and Control Registers The configuration registers determine how the LF3330 operates. Tables 2 through 5 show the formats of the four configuration registers. There are three types of control registers: round PAUSE I ...

Page 8

... DATA Video Imaging Products 9/19/2005–LDS.3330-N LF3330 ...

Page 9

... E01 14 E0E 15 E0F Video Imaging Products 9/19/2005–LDS.3330-N LF3330 ...

Page 10

... Video Imaging Products 9/19/2005–LDS.3330-N LF3330 remain dis ...

Page 11

... Ground ≤ V ≤ V (Note 12 Ground ≤ V ≤ V (Note 12) OUT CC (Notes 5, 6) (Note 25° MHz 25° MHz A 11 LF3330 Vertical Digital Image Filter Voltage Supply 3.00V ≤ V ≤ 3.60V CC 3.00V ≤ V ≤ 3.60V CC Min Typ Max 2.4 0.4 2.0 5.5 0.0 0.8 ±10 ± ...

Page 12

... LF3330– Min Max Min Max Min 0.5 0.5 0 DOUT - DOUT COUT - COUT N 1 Video Imaging Products 9/19/2005–LDS.3330-N LF3330 12 Max Max ...

Page 13

... Max Min Max 0.5 0.5 LF3330– Min Max Min Max 0.5 0 Video Imaging Products LF3330 12 Min Max 0 Min Max 0 9/19/2005–LDS.3330-N ...

Page 14

... Responses from the internal circuitry are specified from the point of view of the device. Output delay, for example, is specified as a maximum since worst- 14 LF3330 Vertical Digital Image Filter case operation of any device always provides data within that time. 11. For the t test, the transition is ENA measured to the 1 ...

Page 15

... LF3330QC12 12 ns LF3330QC12G (GREEN) LOGIC Devices Incorporated reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete ...

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