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PDSP1601AB0AC Datasheet

  • PDSP1601AB0AC

  • ALU and Barrel Shifter

  • 17頁

  • MITEL

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PDSP1601/PDSP1601A
ALU and Barrel Shifter
Supersedes version DS3705 - 2.3 September 1996
DS3705 - 3.0 November 1998
PDSP1601/PDSP1601A
The PDSP1601 is a high performance 16-bit arithmetic
logic unit with an independent on-chip 16-bit barrel shifter.
The PDSP1601A has two operating modes giving 20MHz or
10MHz register-to-register transfer rates.
The PDSP1601 supports Multicycle multiprecision
operation. This allows a single device to operate at 20MHz for
16-bit fields, 10MHz for 32-bit fields and 5MHz for 64-bit fields.
The PDSP1601 can also be cascaded to produce wider words
at the 20MHz rate using the Carry Out and Carry In pins. The
Barrel Shifter is also capable of extension, for example the
PDSP1601 can used to select a 16-bit field from a 32-bit input
in 100ns.
PIN 1A INDEX MARK
ON TOP SURFACE
A
B
C
D
E
F
G
H
J
K
L
11 10 9
8 7
6
5 4
3
2
1
AC84
FEATURES
s
s
s
s
s
s
s
s
s
16-bit, 32 instruction 20MHz ALU
16-bit, 20MHz Logical, Arithmetic or Barrel Shifter
Independent ALU and Shifter Operation
4 x 16-bit On Chip Scratchpad Registers
Multiprecision Operation; e.g. 200ns 64-bit
Accumulate
Three Port Structure with Three Internal Feedback
Paths Eliminates I/O Bottlenecks
Block Floating Point Support
300mW Maximum Power Dissipation
84-pin Pin Grid Array or 84 Contact LCC Packages
or 100 pin Ceramic Quad Flat Pack
GC100
Fig.1 Pin connections - bottom view
APPLICATIONS
ORDERING INFORMATION
PDSP1601 MC GGCR
PDSP1601A BO AC
N.B
10MHz MIL883 Screened -
QFP package
20MHz Industrial - PGA
package
s
s
s
s
s
Digital Signal Processing
Array Processing
Graphics
Database Addressing
High Speed Arithmetic Processors
ASSOCIATED PRODUCTS
PDSP16112
PDSP16116
PDSP16318
PDSP16330
Complex Multiplier
16 x 16 Complex Multiplier
Complex Accumulator
Pythagoras Processor
Further details of the Military grade part are
available in a separate datasheet (DS3763)
1

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