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LF3338QC12 Datasheet PDF - LOGIC Devices

Part NameDescriptionManufacturer
LF3338QC12 8-Bit Vertical Digital Image Filter Logic-Devices
LOGIC Devices Logic-Devices
LF3338QC12 Datasheet PDF : LF3338QC12 pdf   
LF3338QC12 image

The LF3338 is a lower cost version of the 12-bit LF3330 and is suited for multimedia and special effects systems, projectors, plasma display panels, scan converters, set-top boxes, and other consumer applications.
This device filters digital images in the vertical dimension at real-time video rates. Input data is 8 bits and coefficient data is 12 bits and both are 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 LF3338s 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 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 LF3338 contains enough on-board memory to store 256 coefficient sets.
The LF InterfaceTM allows all 256 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

❑ 83 MHz Data Rate
❑ 8-bit Data and 12-bit Coefficients
❑ Supports Interleaved Data Streams
❑ Cascadable for More Filter Taps
❑ Seven 3K x 8-bit, Dynamic Program mable Two-Mode Line Buffers
❑ On-board Memory for 256 Coefficient Sets
❑ LF InterfaceTM Allows All 256 Coefficient Sets to be Updated
   Within Vertical Blanking
❑ Selectable 16-bit Data Output with User-Defined Rounding and Limiting
❑ Separate Input Port for Odd and Even Field Filtering
❑ 8 Filter Taps
❑ 3.3 Volt Power Supply
❑ 5 Volt Tolerant I/O
❑ Purchase Description

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