Intersil Corporation HSP43881-883 Datasheet
HSP43881/883
Data Sheet May 1999
Digital Filter
The HSP43881/883 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 HSP43881/883 has a maximum sample rate of
25.6MHz. The effective multiply accumulate (mac) rate is
204MHz.
The HSP43881/883 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 25.6MHz with multiple passes. The architecture
permits processing filter lengths of over 1000 taps with the
guarantee of no overflows.Inpractice,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
1
of
/2,1/3 or1/4 the input sample rate. These registers also
provide the capability to perform 2-D operations such as
matrix multiplication andNxNspatial correlations/convolutions
for image processing applications.
File Number
2449.4
Features
• This Circuit is Processed in Accordance to MIL-STD-883
and is Fully Conformant Under the Provisions of
Paragraph 1.2.1.
• 0MHz to 25.6MHz Sample Rate
• Eight Filter Cells
• 8-Bit Coefficients and Signal Data
• Low Power CMOS Operation
•I
•I
500µA Maximum
CCSB
160mA Maximum at 20MHz
CCOP
• 26-Bit Accumulator Per Stage
• Filter Lengths Up to 1032 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
TEMP.
PART NUMBER
HSP43881GM-25/883 -55 to 125 85 Ld PGA G85.A
RANGE (oC) PACKAGE
PKG.
NO.
Block Diagram
VCCV
DIENB
CIENB
DCMO - 1
ERASE
CIN0 - 7
RESET
ADR0 - 2
RESET
SHADD
SENBL
SENBH
TCCI
CLK
CLK
5
DF
FILTER
CELL 0
5
5
3
ADR0, ADR1, ADR2
2
SS
DIN0 - DIN7 TCS
8
8
88
26
2
8
DF
FILTER
CELL 1
8
26
1
8
DF
FILTER
CELL 2
8
26
SUM0 - 25
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
8
DF
FILTER
CELL 3
OUTPUT
STAGE
8
26
MUX
26
26
8
DF
FILTER
CELL 4
http://www.intersil.com or 407-727-9207
8
26
8
DF
FILTER
CELL 5
8
26
8
DF
FILTER
CELL 6
8
26
| Copyright © Intersil Corporation 1999
8
DF
FILTER
CELL 7
26
8
TCCO
COUT0 - 7
COENB
Pinouts
HSP43881/883
85 PIN PGA
TOP VIEW, PINS DOWN
2173456 891011
A
B
C
D
E
F
G
H
J
K
L
COENB RESET DIN7V
V
SS
COUT7 ERASE DIN1 DIN2
V
CC
COUT5 COUT6
COUT3 COUT4
COUT1
V
COUT0 SHADD
SS
ADR2 DCM0 CLK
ADR1
V
SUM25
CC
SENBH
SUM24
CC
TCCO TCS
ALIGN
PIN
COUT2
V
SS
V
SS
DIN6 DIN3 DIN0 TCCI V
CIENB
DIENB
V
SUM19
CC
DIN5 DIN4 CIN5 CIN3
SUM16SUM17SUM20
SUM15 SUM12 SUM10 SUM8 SUM6
V
SS
SUM14SUM18SUM21SUM22SUM23DCM1
SUM13
V
CC
CIN7 CIN6 CIN4
CIN2
CIN1
SUM0
SUM1
V
CIN0
V
SUM3 SUM2
SUM5 SUM4ADR0
SUM7
SS
CC
CC
V
SS
V
CC
SENBL
V
SS
V
SS
SUM9SUM11
2
HSP43881/883
Pinouts
(Continued)
L
K
J
H
G
F
E
D
85 PIN PGA
BOTTOM VIEW, PINS UP
1234567891011
DCM1 SUM23 SUM22 SUM21 SUM18 SUM14 SUM13 SUM11 SUM9
SENBH SUM24 SUM19 SUM15 SUM12 SUM10 SUM8 SUM6
V
SUM25
CC
V
COUT0 SHADD
SS
ADR0
V
ADR1
ADR2 DCM0 CLK
COUT1
COUT3 COUT4
SS
V
SS
COUT2
V
CC
SUM20 SUM17 SUM16 SUM7
V
SS
V
CC
V
SS
V
SUM5 SUM4
SUM1 SUM3 SUM2
SUM0
CIN1 CIN0
V
CC
CIN2
V
SENBL
V
SS
SS
CC
C
COUT5 COUT6
B
V
CC
A
V
SS
COENB
ALIGN
PIN
V
CC
DIENB
ERASECOUT7 TCSCOUT8
RESET
NOTE: An overbar on a signal name represents an active LOW signal.
DIN5 DIN4
DIN2DIN1
CIENB
DIN0DIN3DIN6DIN7
CIN8
CIN5 CIN3
CIN4CIN6CIN7
V
CC
V
SS
3
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