LF3330QC15 LODEV [LOGIC Devices Incorporated], LF3330QC15 Datasheet

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LF3330QC15

Manufacturer Part Number
LF3330QC15
Description
Vertical Digital Image Filter
Manufacturer
LODEV [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
Coefficient Sets to be Updated
Within Vertical Blanking
Selectable 16-bit Data Output with
User-Defined Rounding and
Limiting
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
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
complement 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
DESCRIPTION
1
Vertical Digital Image Filter
32
CIRCUITRY
SELECT
ROUND
LIMIT
Vertical Digital Image Filter
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.
The LF3330 contains enough on-board
memory to store 256 coefficient sets.
The LF Interface
coefficient sets to be updated within
vertical blanking.
Selectable 16-bit data output with
user-defined rounding and limiting
minimizes the constraints put on
coefficient sets for various filter
implementations.
Video Imaging Products
OED
OEC
TM
16
12
LF3330
allows all 256
DOUT
COUT
11/08/2001–LDS.3330-M
15-0
11-0
LF3330

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LF3330QC15 Summary of contents

Page 1

DEVICES INCORPORATED DEVICES INCORPORATED FEATURES 83 MHz Data Rate 12-bit Data and Coefficients On-board Memory for 256 Coefficient Sets LF Interface TM Allows All 256 Coefficient Sets to be Updated Within Vertical Blanking Selectable 16-bit Data Output with User-Defined Rounding ...

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 11/08/2001–LDS.3330-M ...

Page 3

DEVICES INCORPORATED SIGNAL DEFINITIONS Power V and GND CC +3.3 V power supply. All pins must be connected. Clock CLK — Master Clock The rising edge of CLK strobes all enabled registers. Inputs DIN — Data Input 11-0 DIN is ...

Page 4

DEVICES INCORPORATED ABLE ONFIGURATION BITS FUNCTION 11-0 Line Buffer Length ABLE ONFIGURATION BITS FUNCTION 0 Line Buffer Mode 1 Line Buffer Load 2 Odd and Even Field Filtering Port Enable 3 Odd ...

Page 5

DEVICES INCORPORATED FUNCTIONAL DESCRIPTION Line Buffers The maximum delay length of each line buffer is 3076 cycles and the minimum is 4 cycles. Configuration Register 0 (CR ) determines the delay length of 0 the line buffers. The line buffer ...

Page 6

DEVICES INCORPORATED 3 set to “0”. Any LF3330s cascaded after the first LF3330 should have Bit 0 of Configuration Register 3 set to “1”. When not cascading, Bit 0 of Configuration Register 3 should be set to “0” ...

Page 7

DEVICES INCORPORATED Limiting An output limiting function is provided for the output of the filter. The limit registers deter- mine the valid range of output values when limiting is enabled (Bit 0 in Configuration Register 2). There are sixteen 32-bit ...

Page 8

DEVICES INCORPORATED limit is stored in bits 31-16. RSL determines which limit register is used for limiting when limiting is enabled. Configuration and control register loading is discussed in the LF Interface TM section IGURE OUND ...

Page 9

DEVICES INCORPORATED significant bits (CF ) determine if 11-9 TM the LF Interface will load coefficient banks or configuration/control registers (see Table 6). The nine least significant bits (CF ) are the address 8-0 for whatever loaded ...

Page 10

DEVICES INCORPORATED configuration register. Data value 003H is written into Configuration Register 2. Table 12 shows an example of loading data into a round register. Data value 7683F4A2H is written into round register 12. Table 13 shows an example of ...

Page 11

DEVICES INCORPORATED M R Above which useful life may be impaired (Notes AXIMUM ATINGS Storage temperature ........................................................................................................... –65°C to +150°C Operating ambient temperature ........................................................................................... –55°C to +125°C V supply voltage with respect to ground ............................................................................ –0.5 ...

Page 12

DEVICES INCORPORATED SWITCHING CHARACTERISTICS OMMERCIAL PERATING ANGE Symbol Parameter t Clock Cycle Time CYC t Clock Pulse Width PW t Input Setup Time S t Input Hold Time H t Data Output Delay DD t Cascade Data ...

Page 13

DEVICES INCORPORATED OMMERCIAL PERATING ANGE Symbol Parameter t Coefficient Input Setup Time CFS t Coefficient Input Hold Time CFH t Load Setup Time LS t Load Hold Time LH t PAUSE Setup Time PS t PAUSE Hold ...

Page 14

DEVICES INCORPORATED NOTES 1. Maximum Ratings indicate stress specifications only. Functional oper- ation of these products at values beyond those indicated in the Operating Condi- tions table is not implied. Exposure to maximum rating conditions for ex- tended periods may ...

Page 15

... DEVICES INCORPORATED ORDERING INFORMATION 100-pin Plastic Quad Flatpack (Q2) Speed 0°C to +70°C — C OMMERCIAL 15 ns LF3330QC15 12 ns LF3330QC12 –55°C to +125°C — C OMMERCIAL –55°C to +125°C — MIL-STD-883 C GND 1 ACC 2 RSL 3 0 RSL 4 1 RSL 5 2 RSL ...

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