Intersil Corporation HSP43891-883 Datasheet

HSP43891/883

Data Sheet May 1999

Digital Filter

The HSP43891/883 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 9 x 9 two’s
complement multiplier, three decimation registers and a 26­bit accumulator. The output stage contains an additional 26­bit accumulator which can add the contents of any filter cell
accumulator to the output stage accumulator shifted right by
8-bits. The HSP43891/883 has a maximum sample rate of

25.6MHz. The effective multiply-accumulate (mac) rate is
204MHz.

The HSP43891/883 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,mostfilter coefficients
are less than 1.0, making even larger filter lengths possible.
The DF provides for 8-bit unsigned or 9-bit two’s
complement arithmetic, independently selectable for
coefficients and signal data.

Each DF filter cell contains three re-sampling or decimation
registers which permit output sample rate reduction at rates

1

of

/2, 1/3 or 1/4 the input sample rate. These registers also
provide the capability to perform 2-D operations such as
matrix multiplication and N x N spatial
correlations/convolutions for image processing applications.

File Number

2451.4

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

• 9-Bit Coefficients and Signal Data

• Low Power CMOS Operation

- ICCSB = 500µA Maximum

- ICCOP = 160µA Maximum at 20MHz

• 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

• Digital Video

• Adaptive Filters

• Echo Cancellation

• Complex Multiply-Add

• Sample Rate Converter

Ordering Information

TEMP.

PART NUMBER

HSP43891GM-20/883 -55 to 125 85 Ld PGA G85.A
HSP43891GM-25/883 -55 to 125 85 Ld PGA G85.A

RANGE (oC) PACKAGE

PKG.

NO.

Block Diagram

VCCV

DIENB
CIENB

DCM0 - 1

ERASE

CIN0 - 8

RESET

ADR0 - 2

RESET

SHADD

SENBL

SENBH

CLK

CLK

5

DF
FILTER
CELL 0

5

5

3

ADR0, ADR1, ADR2

2

DF
FILTER
CELL 1

1

DIN0 - DIN8

9

9

26

DF
FILTER
CELL 2

26

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

FILTER

9

CELL 3

SUM0 - 25

DF

26

MUX

26

OUTPUT

STAGE

26

DF

FILTER

9

CELL 4

26

http://www.intersil.com or 407-727-9207

DF

FILTER

9

CELL 5

26

DF

FILTER

9

CELL 6

26

| Copyright © Intersil Corporation 1999

DF

FILTER

9

CELL 7

9

26

COUT0 - 8

COENB

SS

99

26

2

Pinouts

HSP43891/883

HSP43891/883 85 PIN (PGA)

TOP VIEW, PINS DOWN

2173456 891011

A

B

C

D

E

F

G

H

J

K

L

SENBH

COENB RESET DIN7V

SS

COUT7 ERASE DIN1 DIN2

V

CC

COUT5 COUT6

COUT3 COUT4

COUT1

V

COUT0 SHADD

SS

ADR2 DCM0 CLK

ADR1

V

SUM25

CC

SUM24

V

CC

COUT8 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

HSP43891/883

Pinouts

(Continued)

L

K

J

H

G

F

E

D

HSP43891/883, 85 PIN (PGA)

, 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

CC

V

SS

V

SS

V

SUM5 SUM4

SUM1 SUM3 SUM2

SUM0

CIN1 CIN0

V

CIN2

CC

V

SENBL

V

SS

SS

CC

C

COUT5 COUT6

B

V

CC

A

V

SS

COENB

ALIGN

PIN

V

CC

ERASECOUT7 DIN8COUT8

RESET

DIENB

DIN5 DIN4

DIN2DIN1

CIENB

DIN0DIN3DIN6DIN7

CIN8

CIN5 CIN3

CIN4CIN6CIN7

CC

V

SS

V

3