PDSP16116
16 X 16 Bit Complex Multiplier
Supersedes October 1996 version, DS3707 - 4.2
DS3707 - 5.3 October 1997
The PDSP16116 contains four 16316 array multipliers, two
32-bit adder/subtractors and all the control logic required to sup-
port Block Floating Point Arithmetic as used in FFT applications.
The PDSP16116A variant will multiply two complex (16116)
bit words every 50ns and can be configured to output the com-
plete complex (32132) bit result within a single cycle. The data
format is fractional two’s complement.
In combination with a PDSP16318A, the PDSP16116A forms
a two-chip 20MHz complex multiplier accumulator with 20-bit
accumulator registers and output shifters. The PDSP16116A in
combination with two PDSP16318As and two PDSP1601As
forms a complete 20MHz Radix 2 DIT FFT butterfly solution
which fully supports block floating point arithmetic. The
PDSP16116 has an extremely high throughput that is suited to
recursive algorithms as all calculations are performed with a
single pipeline delay (two cycle fall-through).
XR15:0
XI15:0
YR15:0
YI15:0
REG
REG
REG
REG
MULT
MULT
MULT
MULT
FEATURES
I
Complex Number (16116)3(16116) Multiplication
I
Full 32-bit Result
I
20MHz Clock Rate
I
Block Floating Point FFT Butterfly Support
I
(21)3(21) Trap
I
Two’s Complement Fractional Arithmetic
I
TTL Compatible I/O
I
Complex Conjugation
I
2 Cycle Fall Through
I
144-pin PGA or QFP packages
APPLICATIONS
I
Fast Fourier Transforms
I
Digital Filtering
I
Radar and Sonar Processing
I
Instrumentation
I
Image Processing
ORDERING INFORMATION
PDSP16116 MC GGDR
PDSP16116A B0 AC
PDSP16116A A0 AC
PDSP16116A B0 GG
PDSP16116A MC GGDR
PDSP16116B B0 AC
PDSP16116D B0 GG
10MHz MIL-883 screened
20MHz Industrial
20MHz Military
20MHz Industrial
20MHz MIL-883 screened
25MHz Industrial
31·5MHz Industrial
REG
REG
REG
REG
ADD/SUB
ADD/SUB
SHIFT
SHIFT
REG
REG
PR15:0
PI15:0
Fig. 1 Simplified block diagram
ASSOCIATED PRODUCTS
PDSP16318/A
PDSP16112/A
PDSP16330/A
PDSP1601/A
PDSP16350
PDSP16256
PDSP16510
Complex Accumulator
(16116)3(12112) Complex Multiplier
Pythagoras Processor
ALU and Barrel Shifter
Precision Digital Modulator
Programmable FIR Filter
Single Chip FFT Processor
MITEL [ MITEL NETWORKS CORPORATION ]
