HSP48908
Data Sheet
May 1999
File Number
2456.5
Two Dimensional Convolver
The Intersil HSP48908 is a high speed Two Dimensional
Convolver which provides a single chip implementation of a
video data rate 3 x 3 kernel convolution on two dimensional
data. It eliminates the need for external data storage through
the use of the on-chip row buffers which are programmable
for row lengths up to 1024 pixels.
There are Internal Register banks for storing two
independent 3 x 3 filter kernels, thus facilitating the
implementation of adaptive filters and multiple filter
operations on the same data. The pixel data path also
includes an on-chip ALU for performing real-time arithmetic
and logical pixel point operations.
Data is provided to the HSP48908 in a raster scan
noninterlaced fashion, and is internally buffered on images
up to 1024 pixels wide for the 3 x 3 convolution operation.
Images with larger rows and convolution with larger kernel
sizes can be accommodated by using external row buffers
and/or multiple HSP48908s. Coefficient and pixel input data
are 8-bit signed or unsigned integers, and the 20-bit
convolver output guarantees no overflow for kernel sizes up
to 4 x 4. Larger kernel sizes can be implemented however,
since the filter coefficients will normally be less than their
maximum 8-bit values.
The HSP48908 is manufactured using an advanced CMOS
process, and is a low power fully static design. The
configuration of the device is controlled through a standard
microprocessor interface and all inputs/outputs are TTL
compatible.
Features
• Single Chip 3 x 3 Kernel Convolution
• Programmable On-Chip Row Buffers
• DC to 32MHz Clock Rate
• Cascadable for Larger Kernels and Images
• On-Chip 8-Bit ALU
• Dual Coefficient Mask Registers, Switchable in a
Single Clock Cycle
• 8-Bit Signed or Unsigned Input and Coefficient Data
• 20-Bit Extended Precision Output
• Standard
µP
Interface
• Low Power CMOS
Applications
• Image Filtering
• Edge Detection
• Adaptive Filtering
• Real Time Video Filter
Ordering Information
PART NUMBER
HSP48908VC-20
HSP48908VC-32
HSP48908JC-20
HSP48908JC-32
HSP48908GC-20
HSP48908GC-32
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 0
PACKAGE
100 Ld MQFP
100 Ld MQFP
84 Ld PLCC
84 Ld PLCC
84 Ld PGA
84 Ld PGA
PKG. NO.
Q100x14x20
Q100x14x20
N84.1.15
N84.1.15
G84.A
G84.A
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
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