HSP45240/883
February 1998
Address Sequencer
Description
The Intersil HSP45240/883 is a high speed Address
Sequencer which provides specialized addressing for func-
tions like FFTs, 1-D and 2-D 鏗乴tering, matrix operations, and
image manipulation. The sequencer supports block oriented
addressing of large data sets up to 24 bits at clock speeds
up to 40MHz.
Specialized addressing requirements are met by using the
onboard 24 x 24 crosspoint switch. This feature allows the
mapping of the 24 address bits at the output of the address
generator to the 24 address outputs of the chip. As a result,
bit reverse addressing, such as that used in FFTs, is made
possible.
A single chip solution to read/write addressing is also made
possible by con鏗乬uring the HSP45240 as two 12-bit
sequencers. To compensate for system pipeline delay, a pro-
grammable delay is provided on 12 of the address outputs.
The HSP45240 is manufactured using an advanced CMOS
process, and is a low power fully static design. The con鏗乬u-
ration of the device is controlled through a standard micro-
processor interface and all inputs/outputs, with the exception
of clock, are TTL compatible.
Features
鈥?This Circuit is Processed in Accordance to MIL-STD-
883 and is Fully Conformant Under the Provisions of
Paragraph 1.2.1.
鈥?Block Oriented 24-Bit Sequencer
鈥?Con鏗乬urable as Two Independent 12-Bit Sequencers
鈥?24 x 24 Crosspoint Switch
鈥?Programmable Delay on 12 Outputs 9-
鈥?Multi-Chip Synchronization Signals
鈥?Standard
碌P
Interface
鈥?100pF Drive on Outputs
鈥?DC to 40MHz Clock Rate
Applications
鈥?1-D, 2-D Filtering
鈥?Pan/Zoom Addressing
鈥?FFT Processing
鈥?Matrix Math Operations
Ordering Information
PART NUMBER
HSP45240GM-25/883
HSP45240GM-33/883
HSP45240GM-40/883
TEMP.
RANGE (
o
C)
-55 to 125
-55 to 125
-55 to 125
PACKAGE
68 Ld PGA
68 Ld PGA
68 Ld PGA
PKG.
NO.
Block Diagram
STARTOUT
ADDVAL
DONE
BLOCKDONE
12
REG
STARTIN
START
CIRCUITRY
SEQUENCE
GENERATOR
24
CROSS-POINT
SWITCH
OUT12-23
OEH
12
DELAY
1-8
OUT0-11
OEL
PROCESSOR INTERFACE
BUSY
DLYBLK
D0-6, CS, A0, WR
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
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Copyright
漏
Intersil Corporation 1999
File Number
2816.3
9-16
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