CIC FPGA IP Core

Overview Key Features Offering Brief What's Included Ordering Information Documentation & Resources Markets

Altera

The CIC Intel FPGA IP core implements a Cascaded Integrator-Comb (CIC) filter with data ports that are compatible with the Avalon® streaming (Avalon-ST) interface. CIC filters (also known as Hogenauer filters) are computationally efficient for extracting baseband signals from narrow-band sources using decimation. They also construct narrow-band signals from processed baseband signals using interpolation. CIC filters use only adders and registers; they require no multipliers to handle large rate changes. Therefore, CIC is a suitable and economical filter architecture for hardware implementation, and is widely used in sample-rate-conversion designs, such as digital down converters (DDC) and digital up converters (DUC).

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Key Features

Interpolation and decimation filters with variable rate change factors (2 to 32,000), a configurable number of stages (1 to 12), and two differential delay options (1 or 2).
Single clock domain with selectable number of interfaces and a maximum of 1,024 channels.
Selectable data storage options with an option to use pipelined integrators.
Configurable input data width (1 to 32 bits) and output data width (1 to full resolution data width).
Selectable output rounding modes (truncation, convergent rounding, rounding up, or saturation) and Hogenauer pruning support.
Optimization for speed by specifying the number of pipeline stages used by each integrator.
Compensation filter coefficients generation.

Offering Brief

Device Family	Arria® II GX FPGA, Arria® V GT FPGA, Arria® V GX FPGA, Arria® V GZ FPGA, Arria® V ST SoC FPGA, Arria® V SX SoC FPGA, Cyclone® IV E FPGA, Cyclone® IV GX FPGA, Cyclone® V E FPGA, Cyclone® V GT FPGA, Cyclone® V GX FPGA, Cyclone® V SE SoC FPGA, Cyclone® V ST SoC FPGA, Cyclone® V SX SoC FPGA, Agilex® 3 FPGAs and SoC FPGAs C-Series, Agilex® 5 FPGAs and SoC FPGAs D-Series, Agilex® 5 FPGAs and SoC FPGAs E-Series, Agilex® 7 FPGAs and SoC FPGAs F-Series, Agilex® 7 FPGAs and SoC FPGAs I-Series, Agilex® 7 FPGAs and SoC FPGAs M-Series, Agilex® 9 FPGAs and SoC FPGAs Direct RF-Series, Arria® 10 GT FPGA, Arria® 10 GX FPGA, Arria® 10 SX SoC FPGA, Cyclone® 10 GX FPGA, Cyclone® 10 LP FPGA, MAX® 10 FPGA, Stratix® 10 AX SoC FPGA, Stratix® 10 DX FPGA, Stratix® 10 GX FPGA, Stratix® 10 SX SoC FPGA, Stratix® 10 TX FPGA, Stratix® IV E FPGA, Stratix® IV GX FPGA, Stratix® V GS FPGA, Stratix® V GX FPGA
Offering Status	Production
Integrated Testbench	Yes
Evaluation License	Yes
Design Examples Available	Yes
Demo	No
Compliance	No
Development Language	Encrypted Verilog, Encrypted VHDL, Verilog, VHDL