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33
Filter IP
from 18 vendors
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RGB to ITU-R 601/656 Encoder
- The DB1892AXI RGB to CCIR 601 / CCIR 656 Encoder interfaces RGB data along with synchronization signals from a LCD Controller (or any LCD display timing & control unit) to a TFT LCD Panel by-way-of a CCIR 601 / CCIR 656 interface.
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2.56 MHz Digital filter
- SGB25V technology
- Build-in clock former
- Test modes – digital data output
- Operating with complex signal
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LMS Adaptive Channel Equalizer
- 17-tap T-spaced complex-arithmetic LMS signed-error Channel Equalizer
- Adaptation bandwidth control (mu, step size)
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Serial FIR Filter
- Serial Arithmetic for Reduced Resource Utilization
- Variable Number of Taps up to 64
- Data and Coefficients up to 32 Bits
- Output Size Consistent with Data Size
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Parallel FIR Filter
- Variable number of taps up to 64
- Data and coefficients up to 32 bits
- Output size consistent with data size
- Zero-latency operation
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FIR Filter Generator
- Direct Form 64-Tap FIR Filter: In the direct form FIR filter, the input samples are shifted into a shift register queue and each shift register is connected to a multiplier. The products from the multipliers are added together to get the FIR filter’s output sample. This example shows a 64-tap FIR filter using 16 sysDSP blocks and approximately 512 slices in the LatticeECP3 FPGA.
- 128-Tap Long Asymmetrical Filters Using Ladder Architecture: Using the ladder architecture, the FIR filter is split into sections each having the same coefficient set as if it was a single continuous filter chain. Instead of connecting the shifted data and the result outputs from the first section to the corresponding input of the next section, the ladder network connects a delayed version of the first stage input data to the second stage input data and sums a delayed version of the first stage sum output with the second stage sum output.
- 256-Tap Long Symmetrical Filters Using Ladder Architecture: The impulse response for most FIR filters is symmetric. This symmetry can generally be exploited to reduce the arithmetic requirements and produce area-efficient filter realizations. It is possible to use only half the multipliers for symmetric coefficients compared to that used for a similar filter with non-symmetric coefficients. An implementation for symmetric coefficients is shown in the figure below. The 256-tap long symmetrical filter example uses only 32 sysDSP slices, 2EBR and 3.5K slices.
- Polyphase Interpolator FIR Filter Designs: The polyphase interpolation filter implements the computationally efficient 1-to-P interpolation filter where P is an integer greater than 1. The example below shows a design with an interpolation by 16 that uses 128 taps. This requires 8 polyphase filters (sub-filters) with 16 coefficients each.
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2D FIR Filter
- Single color plane
- Single-rate, interpolating, and decimating filter configurations
- Input frame size set at compile-time
- Static or dynamic zoom and pan
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Cascaded Integrator-Comb (CIC) Filter
- 1-32-bit Input Data Width
- 1-8 Cascaded Stages
- 1-4 Cycles Differential Delay, Run-time Programmable for Both Decimation and Interpolation
- 2-16,384 Decimation and Interpolation Sampling Rate Factor, Run-time Programmable Rates for Both Decimationand Interpolation
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Distributed Arithmetic FIR (DA-FIR) Filter Generator
- Variable number of taps up to 1024
- Multi-channel support (up to 32 channels)
- Polyphase interpolation/decimation filters
- Halfband filters
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FFT Compiler
- Wide range of points sizes: 64, 128, 256, 512, 1024, 2048, 4096, 8192, and 16384
- Choice of high-performance (streaming I/O) and low resource (burst I/O) versions
- Run-time variable FFT point size
- Forward, inverse or port-configurable forward/inverse transform modes