HSP48901
3 x 3 Image Filter

Key Features

• DC to 30MHz Clock Rate
• Configurable for 1-D and 2-D Correlation/Convolution
• Dual Coefficient Mask Registers, Switchable in a Single Clock Cycle
• Two's Complement or Unsigned 8-Bit Input Data and Coefficients
• 20-Bit Extended Precision Output
• Standard µP Interface

Description

The Intersil HSP48901 is a high speed 9-Tap FIR Filter which utilizes 8-bit wide data and coefficients. It can be configured as a one dimensional (1-D) 9-Tap filter for a variety of signal processing applications, or as a two dimensional (2-D) filter for image processing. In the 2-D configuration, the device is ideally suited for implementing 3 x 3 kernel convolution. The 30MHz clock rate allows a large number of image sizes to be processed within the required frame time for real-time video.

Data is provided to the HSP48901 through the use of programmable data buffers such as the HSP9500 or any other Programmable Shift Register. Coefficient and pixel input data are 8-bit signed or unsigned integers, and the 20-bit extended output guarantees no overflow will occur during the filtering operation. There are two internal register banks for storing independent 3 x 3 filter kernels, thus, facilitating the implementation of adaptive filters and multiple filter operations on the same data.

The configuration of the HSP48901 Image Filter is controlled through a standard microprocessor interface and all inputs and outputs are TTL compatible.

Applications

• Image Filtering
• Edge Detection/Enhancement
• Pattern Matching
• Real Time Video Filters