PDSP1601AB0

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 In...