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HSP43124

Intersil Corporation
Part Number HSP43124
Manufacturer Intersil Corporation
Description Serial I/O Filter
Published Mar 26, 2005
Detailed Description HSP43124 Data Sheet May 1999 File Number 3555.6 Serial I/O Filter The Serial I/O Filter is a high performance filter eng...
Datasheet PDF File HSP43124 PDF File

HSP43124
HSP43124

Overview
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.
For digital tuning applications, a separate multiplier is provided which allows the incoming data stream to be multiplied, or mixed, by a user supplied mix factor.
A two pin interface is provided for serially loading the mix factor from an external source or selecting the mix factor from an onboard ROM.
The on-board ROM contains samples of a sinusoid capable of spectrally shifting the input data by one quarter of the sample rate, FS/4.
This allows the chip to function as a digital down converter when the filter stages are configured as a low-pass filter.
The serial interface for3- input and output data is compatible with the serial ports of common DSP microprocessors.
Coefficients and configuration data are loaded over a bidirectional eight bit interface.
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 Applications • Low Cost FIR Filter • Filter Co-Processor • Digital Tuner Ordering Information PART NUMBER HSP43124PC-45 HSP43124PC-33 HSP43124SC-45 HSP43124SC-33 HSP43124SI-40 TEMP.
RANGE (oC) 0 to 70 0 to 70...


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