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HSP43124 - Serial I/O Filter

Description

NAME VCC GND DIN TYPE I +5V Power Supply Ground Serial Data Input.

The bit value present on this input is sampled on the rising edge of SCLK.

A “HIGH” on this input represents a “1”, and a low on this input represents “0”.

Features

  • 45MHz Clock Rate.
  • 256 Tap Programmable FIR Filter.
  • 24-Bit Data, 32-Bit Coefficients.
  • Cascade of up to 5 Half Band Filters.
  • Decimation from 1 to 256.
  • Two Pin Interface for Down Conversion by FS/4.
  • Multiplier for Mixing or Scaling Input with an External Source.
  • Serial I/O Compatible with Most DSP Microprocessors.

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Full PDF Text Transcription

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HSP43124 Data Sheet May 1999 File Number 3555.6 Serial I/O Filter The Serial I/O Filter is a high performance filter engine that is ideal for off loading the burden of filter processing from a DSP microprocessor. It supports a variety of multistage filter configurations based on a user programmable filter and fixed coefficient halfband filters. These configurations include a programmable FIR filter of up to 256 taps, a cascade of from one to five halfband filters, or a cascade of halfband filters followed by a programmable FIR. The half band filters each decimate by a factor of two, and the FIR filter decimates from one to eight. When all six filters are selected, a maximum decimation of 256 is provided.
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