Download Memory-Based Logic Synthesis by Tsutomu Sasao PDF

By Tsutomu Sasao

ISBN-10: 1441981039

ISBN-13: 9781441981035

This publication describes the synthesis of common sense services utilizing stories. it's important to layout box programmable gate arrays (FPGAs) that comprise either small-scale thoughts, referred to as look-up tables (LUTs), and medium-scale stories, referred to as embedded stories. this can be a beneficial reference for either FPGA method designers and CAD device builders, eager about common sense synthesis for FPGAs. an individual utilizing good judgment gates to layout good judgment circuits, you could enjoy the equipment defined during this publication.

  • Describes intimately the synthesis of common sense services utilizing memories;
  • Introduces a look-up tables (LUT) cascade as a brand new structure for common sense synthesis;
  • indicates common sense layout equipment for index iteration functions;
  • Introduces C-measure, which specifies the complexity of Boolean functions;
  • Introduces hash-based layout tools, which successfully synthesize index iteration features via pairs of smaller stories and will be utilized to IP handle tables, packet filtering, terminal entry controllers, reminiscence patch circuits, virus scanning circuits, intrusion detection circuits, fault map of stories, code converters and trend matching.

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70, 91]. 1. Let f be a symmetric function of n-variables. f / Ä n C 1. Proof. xkC1 ; xkC2 ; : : : ; xn /. Let k be the column multiplicity of the decomposition. Since f is symmetric, the column labels with the same weights have the same column patterns in the decomposition chart. Thus, the column multiplicity is at most k C 1. From this, we have the lemma. 1. x4 ; x5 ; x6 /. This is an example for k D 3. In this case, the number of columns is 23 D 8. 0; 0; 0/. 0; 0; 1/. They have the same column functions.

0; 0; : : : ; 0/, the top data input y0 drives the output. 0; 0; : : : ; 1/, the second data input y1 drives the output. 1; 1; : : : ; 1/, the last data input y2t 1 drives the output. An t-MUX can be realized using 1-MUXs. 1. A 3-MUX is realized with 23 shown in Fig. 3. 1. A t-MUX is realized by using 2t 1 modules of 1-MUXs. Proof. This can easily be done by mathematical induction. When K 4, a 2-MUX can be realized with one or two K-LUTs. T. 1007/978-1-4419-8104-2 4, c Springer Science+Business Media, LLC 2011 25 26 4 MUX-Based Synthesis Fig.

4 Realization with 6-LUTs x1 x2 x3 x4 x5 xn-3 xn-2 xn-1 xn f Proof. 32/ D 5 outputs. Let K D 6. 5, the n w number of cells is at most d K e D n6 55 D n 5. Note that each cell except for w the rightmost cell has at most 5 outputs. 6, the second cell from the right has at most four outputs as shown in Fig. 4. So, the total number of cells is at most n 6. Note that the second cell from the right has 4 outputs, while the rightmost cell has just one output. n 8/ C 4 C 1 D 5n 35. 2. f / Ä 16 is 2n 11 or less, where n 8.

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