PDSP1601_96 Datasheet, PDF (1/18 Pages) Mitel Networks Corporation – ALU and Barrel Shifter

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ALU and Barrel Shifter
Supersedes version in December 1993 Digital Video & DSP IC Handbook, HB3923-1
DS3705 - 2.3 September 1996
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
LC84
FEATURES
s 16-bit, 32 instruction 20MHz ALU
s 16-bit, 20MHz Logical, Arithmetic or Barrel Shifter
s Independent ALU and Shifter Operation
s 4 x 16-bit On Chip Scratchpad Registers
s Multiprecision Operation; e.g. 200ns 64-bit
Accumulate
s Three Port Structure with Three Internal Feedback
Paths Eliminates I/O Bottlenecks
s Block Floating Point Support
s 300mW Maximum Power Dissipation
s 84-pin Pin Grid Array or 84 Contact LCC Packages
or 100 pin Ceramic Quad Flat Pack
APPLICATIONS
s Digital Signal Processing
s Array Processing
s Graphics
s Database Addressing
s High Speed Arithmetic Processors
GG100
Fig.1 Pin connections - bottom view
ASSOCIATED PRODUCTS
PDSP16112 Complex Multiplier
PDSP16116 16 x 16 Complex Multiplier
PDSP16318 Complex Accumulator
PDSP16330 Pythagoras Processor
1