### Abstract

As seen in stream data processing, it is necessary to extract a particular data field from bulk data, where we can use a field-data extractor. Particularly, an (M,N)-field-data extractor reads out any consecutive N bytes from an M-byte register by connecting its input/output using multiplexers (MUXs). However, the number of required MUXs increases too much as the input/output byte lengths increase. It is known that partitioning an MUX network leads to reducing the number of MUXs. In this paper, we firstly pick up a multi-layered MUX network, which is generated by repeatedly partitioning a MUX network into a collection of single-layered MUX networks. We show that the multi-layered MUX network is equivalent to the barrel shifter from which redundant MUXs and wires are removed, and we prove that the number of its required MUXs becomes the smallest among MUX-network-partitioning based field-data extractors. Next, we propose a rotator-based MUX network for a field-data extractor, which reads out a particular data in an input register to a rotator. The size of the rotator is the same as its output register and hence we no longer require any extra wires nor MUXs. By rotating the input data appropriately, we can finally have a right-ordered data into an output register. Experimental results show that our rotator-based MUX network reduces the required number of gates to implement a field-data extractor by up to 33% compared with the one using a multi-layered MUX network.

Original language | English |
---|---|

Title of host publication | Proceedings - 29th IEEE International System on Chip Conference, SOCC 2016 |

Publisher | IEEE Computer Society |

Pages | 194-199 |

Number of pages | 6 |

ISBN (Electronic) | 9781509013661 |

DOIs | |

Publication status | Published - 2017 Apr 19 |

Event | 29th IEEE International System on Chip Conference, SOCC 2016 - Seattle, United States Duration: 2016 Sep 6 → 2016 Sep 9 |

### Other

Other | 29th IEEE International System on Chip Conference, SOCC 2016 |
---|---|

Country | United States |

City | Seattle |

Period | 16/9/6 → 16/9/9 |

### Fingerprint

### ASJC Scopus subject areas

- Hardware and Architecture
- Control and Systems Engineering
- Electrical and Electronic Engineering

### Cite this

*Proceedings - 29th IEEE International System on Chip Conference, SOCC 2016*(pp. 194-199). [7905464] IEEE Computer Society. https://doi.org/10.1109/SOCC.2016.7905464

**Rotator-based multiplexer network synthesis for field-data extractors.** / Ito, Koki; Kawamura, Kazushi; Tamiya, Yutaka; Yanagisawa, Masao; Togawa, Nozomu.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Proceedings - 29th IEEE International System on Chip Conference, SOCC 2016.*, 7905464, IEEE Computer Society, pp. 194-199, 29th IEEE International System on Chip Conference, SOCC 2016, Seattle, United States, 16/9/6. https://doi.org/10.1109/SOCC.2016.7905464

}

TY - GEN

T1 - Rotator-based multiplexer network synthesis for field-data extractors

AU - Ito, Koki

AU - Kawamura, Kazushi

AU - Tamiya, Yutaka

AU - Yanagisawa, Masao

AU - Togawa, Nozomu

PY - 2017/4/19

Y1 - 2017/4/19

N2 - As seen in stream data processing, it is necessary to extract a particular data field from bulk data, where we can use a field-data extractor. Particularly, an (M,N)-field-data extractor reads out any consecutive N bytes from an M-byte register by connecting its input/output using multiplexers (MUXs). However, the number of required MUXs increases too much as the input/output byte lengths increase. It is known that partitioning an MUX network leads to reducing the number of MUXs. In this paper, we firstly pick up a multi-layered MUX network, which is generated by repeatedly partitioning a MUX network into a collection of single-layered MUX networks. We show that the multi-layered MUX network is equivalent to the barrel shifter from which redundant MUXs and wires are removed, and we prove that the number of its required MUXs becomes the smallest among MUX-network-partitioning based field-data extractors. Next, we propose a rotator-based MUX network for a field-data extractor, which reads out a particular data in an input register to a rotator. The size of the rotator is the same as its output register and hence we no longer require any extra wires nor MUXs. By rotating the input data appropriately, we can finally have a right-ordered data into an output register. Experimental results show that our rotator-based MUX network reduces the required number of gates to implement a field-data extractor by up to 33% compared with the one using a multi-layered MUX network.

AB - As seen in stream data processing, it is necessary to extract a particular data field from bulk data, where we can use a field-data extractor. Particularly, an (M,N)-field-data extractor reads out any consecutive N bytes from an M-byte register by connecting its input/output using multiplexers (MUXs). However, the number of required MUXs increases too much as the input/output byte lengths increase. It is known that partitioning an MUX network leads to reducing the number of MUXs. In this paper, we firstly pick up a multi-layered MUX network, which is generated by repeatedly partitioning a MUX network into a collection of single-layered MUX networks. We show that the multi-layered MUX network is equivalent to the barrel shifter from which redundant MUXs and wires are removed, and we prove that the number of its required MUXs becomes the smallest among MUX-network-partitioning based field-data extractors. Next, we propose a rotator-based MUX network for a field-data extractor, which reads out a particular data in an input register to a rotator. The size of the rotator is the same as its output register and hence we no longer require any extra wires nor MUXs. By rotating the input data appropriately, we can finally have a right-ordered data into an output register. Experimental results show that our rotator-based MUX network reduces the required number of gates to implement a field-data extractor by up to 33% compared with the one using a multi-layered MUX network.

UR - http://www.scopus.com/inward/record.url?scp=85017347581&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85017347581&partnerID=8YFLogxK

U2 - 10.1109/SOCC.2016.7905464

DO - 10.1109/SOCC.2016.7905464

M3 - Conference contribution

AN - SCOPUS:85017347581

SP - 194

EP - 199

BT - Proceedings - 29th IEEE International System on Chip Conference, SOCC 2016

PB - IEEE Computer Society

ER -