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| DFPADD Floating Point Pipelined Adder Unit ver 2.50 OVERVIEW The DFPADD uses the pipelined mathematics algorithm to compute sum of two arguments. The input numbers format is according to IEEE-754 standard. DFPADD supports single precision real number. Add operation was pipelined up to 5 levels. Input data are fed every clock cycle. The first result appears after 5 clock periods latency and next results are available each clock cycle. Full IEEE754 precision and accuracy were included. Fully synthesizable, static synchronous design with no internal tri-states DELIVERABLES Source code: VHDL Source Code or/and VERILOG Source Code or/and Encrypted, or plain text EDIF netlist VHDL & VERILOG test bench environment Active-HDL automatic simulation macros NCSim automatic simulation macros ModelSim automatic simulation macros Tests with reference responses Technical documentation Installation notes HDL core specification Datasheet Synthesis scripts Example application Technical support IP Core implementation support 3 months maintenance APPLICATION Math coprocessors DSP algorithms Embedded arithmetic coprocessor Data processing & control KEY FEATURES Full IEEE-754 compliance Single precision real format support Simple interface No programming required 5 levels pipeline Full accuracy and precision Results available at every clock Overflow, underflow and invalid operation flags Fully configurable Delivery the IP Core updates, minor and major versions changes Delivery the documentation updates Phone & email support LICENSING Comprehensible and clearly defined licensing methods without royalty fees make using of IP Core easy and simply. Single Design license allows using IP Core in single FPGA bitstream and ASIC implemenhttp://www.DigitalCoreDesign.com http://www.dcd.pl All trademarks mentioned in this document are trademarks of their respective owners. Copyright 1999-2007 DCD - Digital Core Design. All Rights Reserved. tation. It also permits FPGA prototyping before ASIC production. Unlimited Designs license allows using IP Core in unlimited number of FPGA bitstreams and ASIC implementations. In all cases number of IP Core instantiations within a design, and number of manufactured chips are unlimited. There is no time of use limitations. Single Design license for VHDL, Verilog source code called HDL BLOCK DIAGRAM adatai(31:0) bdatai(31:0) en rst clk Arguments Checker Main FP Pipelined Unit Result Composer datao(31:0) ofo ufo ifo Source Encrypted, or plain text EDIF called Netlist Unlimited Designs license for HDL Source Netlist Arguments Checker - performs input data analyze against IEEE-754 number standard compliance. The appropriate numbers and information about the input data classes are given as the results to Main FP Pipelined Unit. Main FP Pipelined Unit - performs floating point add function. Gives the complex information about the results and makes final flags settings. Result Composer - performs result rounding function, data alignment to IEEE-754 standard, and the final flags setting. Upgrade from Netlist to HDL Source Single Design to Unlimited Designs SYMBOL adatai(31:0) bdatai(31:0) en rst clk datao(31:0) ofo ufo ifo PERFORMANCE The following table gives a survey about the Core area and performance in the ALTERA(R) devices after Place & Route : Speed Logic Cells Fmax grade FLEX10KE -1 1110 47 MHz ACEX1K -1 1110 47 MHz APEX20K -1 955 55 MHz APEX20KE -1 955 52 MHz APEX20KC -7 955 68 MHz APEX-II -7 955 88 MHz MERCURY -5 975 117 MHz STRATIX -5 845 107 MHz CYCLONE -6 845 104 MHz STRATIX-II -3 690 153 MHz CYCLONE-II -6 845 105 MHz Core performance in ALTERA(R) devices Device PINS DESCRIPTION PIN clk rst en adatai[31:0] bdatai[31:0] datao[31:0] ofo ufo ifo TYPE Input Input Input Input Input DESCRIPTION Global system clock Global system reset Enable computing A data bus input B data bus input Output Data bus output Output Overflow flag Output Underflow flag Output Invalid result flag All trademarks mentioned in this document are trademarks of their respective owners. http://www.DigitalCoreDesign.com http://www.dcd.pl Copyright 1999-2007 DCD - Digital Core Design. All Rights Reserved. CONTACTS For any modification or special request please contact to Digital Core Design or local distributors. Headquarters: Wroclawska 94 41-902 Bytom, POLAND nfo@dcd.pl e-mail: iinfo@dcd.pl tel. fax : +48 32 282 82 66 : +48 32 282 74 37 Distributors: http://www.dcd.pl/apartn.php Please check http://www.dcd.pl/apartn.php All trademarks mentioned in this document are trademarks of their respective owners. http://www.DigitalCoreDesign.com http://www.dcd.pl Copyright 1999-2007 DCD - Digital Core Design. All Rights Reserved. |
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