Digital FIR filter with APB interface

Overview

Key Features

• Programmable decimation filter rate between 1 and 4.
• Programmable number of taps between 3 and 64.
• Programmable 16-bit coefficients.
• 16-bit data
• A new filter output is available every “TAPS” clock cycles.
• Scaling and rounding of filter output to 22 bits.
• No requirement for symmetric or anti-symmetric filters
• AMBA APB control register interface
• DMA data interface

Benefits

• Very low resource requirements
• Within +/-1 LSB of floating point reference model

Deliverables

• RTL source code
• Testbench with various stimulus generation
• Synthesis scripts
• MATLAB model

Technical Specifications