PDSP16318MC

www.DataSheet4U.com PDSP16318 MC PDSP16318 MC Complex Accumulator DS3761 ISSUE 2.1 November 1998 The PDSP16318 contains two independent 20-bit Adder/ Subtractors combined with accumulator registers and shift structures. The four port architecture permits full 10MHz throughout in FFT and filter applications. Two PDSP16318s combined with a single PDSP16112A Complex Multiplier provide a complete arithmetic solution for a Radix 2 DIT FFT Butterfly. A new complex Butterfly result can be generated every 100ns allowing 1k complex FTT's to to be executed in 512µ s. GC100 FEATURES s s s s s s s s s s Full 10MHz Throughout in FFT Applications Four Independent 16-bit I/O Ports 20-bit Addition or Accumulation Fully Compatible with PDSP16112 Complex Multiplier On Chip Shift Structures for Result Scaling Overflow Detection Independent Three-State Outputs and Clock Enables for 2 Port 10MHz Operation 1.4 micron CMOS 500mW Maximum Power Dissipation 100 pin ceramic QFP Fig.1 Pin connections Rev Date NOTE A B C D MAR 1993 NOV 1998 Polyimide is used as an inter-layer dielectric and as glassivation. ORDERING INFORMATION PDSP16318/MC/GC1R (Ceramic QFP Package MIL STD 883 Screening) A REG DELAY B SHIFT A REG C A SHIFT B REG B REG D Fig.2 PDSP16318 simplified block diagram 1 PDSP16318 MC CEA DEL ASR S2:0 OEC 16 A A REG 16 8 CYCLE DELAY MUX 20 B 20 SHIFT A 16 REG 16 D 20 MUX REG 20 CLK 20 MS MUX 20 REG CLR OVR A 16 SHIFT 16 B REG 16 B 20 REG 16 D REG ASI OED Fig...