hsp43881 ETC-unknow, hsp43881 Datasheet
hsp43881
Manufacturer Part Number
hsp43881
Description
Digital Filter
Manufacturer
ETC-unknow
Datasheet
1.HSP43881.pdf
(21 pages)
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Digital Filter
The HSP43881 is a video speed Digital Filter (DF) designed
to efficiently implement vector operations such as FIR digital
filters. It is comprised of eight filter cells cascaded internally
and a shift and add output stage, all in a single integrated
circuit. Each filter cell contains a 8 x 8-bit multiplier, three
decimation registers and a 26-bit accumulator. The output
stage contains an additional 26-bit accumulator which can
add the contents of any filter cell accumulator to the output
stage accumulator shifted right by 8 bits. The HSP43881 has
a maximum sample rate of 30MHz. The effective multiply
accumulate (mac) rate is 240MHz.
The HSP43881 DF can be configured to process expanded
coefficient and word sizes. Multiple DFs can be cascaded for
larger filter lengths without degrading the sample rate or a
single DF can process larger filter lengths at less than
30MHz with multiple passes. The architecture permits
processing filter lengths of over 1000 taps with the
guarantee of no overflows. In practice, most filter coefficients
are less than 1.0, making even larger filter lengths possible.
The DF provides for 8-bit unsigned or two’s complement
arithmetic, independently selectable for coefficients and
signal data.
Each DF filter cell contains three resampling or decimation
registers which permit output sample rate reduction at rates
of
provide the capability to perform 2-D operations such as
matrix multiplication and N x N spatial
correlations/convolutions for image processing applications.
Block Diagram
1
DCMO - 1
/
ADR0 - 2
2
CIN0 - 7
SHADD
SENBH
ERASE
RESET
SENBL
,
RESET
DIENB
CIENB
1
TCCI
CLK
CLK
/
3
or
1
V
8
5
5
/
CC
4
the input sample rate. These registers also
3
5
ADR0, ADR1, ADR2
FILTER
CELL 0
2
V
DF
SS
2
8
26
8
1
FILTER
CELL 1
DF
DIN0 - DIN7 TCS
8
26
Data Sheet
8
8
FILTER
CELL 2
DF
8
26
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
8
SUM0 - 25
FILTER
CELL 3
DF
OUTPUT
STAGE
8
26
MUX
26
26
8
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
FILTER
CELL 4
Features
• Eight Filter Cells
• 0MHz to 30MHz Sample Rate
• 8-Bit Coefficients and Signal Data
• 26-Bit Accumulator Per Stage
• Filter Lengths Over 1000 Taps
• Expandable Coefficient Size, Data Size and Filter Length
• Decimation by 2, 3 or 4
Applications
• 1-D and 2-D FIR Filters
• Radar/Sonar
• Adaptive Filters
• Echo Cancellation
• Complex Multiply-Add
• Sample Rate Converters
Ordering Information
DF
HSP43881JC-20
HSP43881JC-25
HSP43881JC-30
HSP43881GC-20
HSP43881GC-25
HSP43881GC-30
8
26
NUMBER
PART
8
FILTER
CELL 5
DF
May 1999
8
26
TEMP. RANGE
8
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
FILTER
CELL 6
(
o
DF
C)
8
26
8
File Number 2758.4
84 Ld PLCC
84 Ld PLCC
84 Ld PLCC
85 Ld PGA
85 Ld PGA
85 Ld PGA
PACKAGE
FILTER
CELL 7
DF
HSP43881
26
8
8
TCCO
COUT0 - 7
COENB
N84.1.15
N84.1.15
N84.1.15
G85.A
G85.A
G85.A
PKG. NO.
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