JP2001504657A - シフトレジスタとして倍加するルックアップテーブル - Google Patents
シフトレジスタとして倍加するルックアップテーブルInfo
- Publication number
- JP2001504657A JP2001504657A JP52361298A JP52361298A JP2001504657A JP 2001504657 A JP2001504657 A JP 2001504657A JP 52361298 A JP52361298 A JP 52361298A JP 52361298 A JP52361298 A JP 52361298A JP 2001504657 A JP2001504657 A JP 2001504657A
- Authority
- JP
- Japan
- Prior art keywords
- memory cell
- logic element
- logic
- input terminal
- memory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/1733—Controllable logic circuits
- H03K19/1735—Controllable logic circuits by wiring, e.g. uncommitted logic arrays
- H03K19/1736—Controllable logic circuits by wiring, e.g. uncommitted logic arrays in which the wiring can be modified
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
- H03K19/17724—Structural details of logic blocks
- H03K19/17728—Reconfigurable logic blocks, e.g. lookup tables
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
- H03K19/17736—Structural details of routing resources
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
- H03K19/17748—Structural details of configuration resources
- H03K19/17768—Structural details of configuration resources for security
Landscapes
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Logic Circuits (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.プログラマブル相互接続構造と、 複数の論理素子とを含み、前記論理素子の少なくとも1つがシフトレジスタと して構成可能である、EPGA。 2.前記少なくとも1つの論理素子は、 少なくとも第1のメモリセルと後続のメモリセルとを含む複数のメモリセルを 含み、複数のメモリセルの各々はメモリセル入力端子およびメモリセル出力端子 を有し、さらに、 第1のメモリセルのメモリセル出力端子を後続のメモリセルの入力端子にプロ グラム可能に接続するためのシフト手段を含む、請求項1に記載のFPGA。 3.論理素子データ入力端子と、 論理素子データ出力端子と、 メモリセル出力端子の選択された1つを論理素子データ出力端子に接続するた めのマルチプレクサと、 論理素子データ入力端子を少なくとも第1のメモリセルの入力端子に接続する ための入力手段とをさらに含む、請求項2に記載のFPGA。 4.FPGAにおいて、論理素子は、 少なくとも第1のメモリセルと後続のメモリセルとを含む複数のメモリセルを 含み、複数のメモリセルの各々はメモリセル入力端子およびメモリセル出力端子 を有し、さらに、 論理素子データ入力端子と、 論理素子データ出力端子と、 第1のメモリセルのメモリセル出力端子を後続のメモリセルの入力端子にプロ グラム可能に接続するためのシフト手段と、 メモリセル出力端子の選択された1つを論理素子データ出力端子に接続するた めのマルチプレクサと、 論理素子データ入力端子を少なくとも第1のメモリセルの入力端子に接続する ための入力手段とを含む、論理素子。 5.論理素子データ入力端子を複数のメモリセルの選択された1つに選択的に結 合するためのデマルチプレクサをさらに含む、請求項4に記載の論理素子。 6.FPGAにおいて、論理素子は、 複数のメモリセルを含み、複数のメモリセルの各々はメモリセル入力端子およ びメモリセル出力端子を有し、さらに、 論理素子データ入力端子と、 複数のメモリセルのメモリセル出力端子に選択的に結合される論理素子データ 出力端子と、 論理素子がシフトレジスタとして構成される場合、論理素子データ入力端子を 複数のメモリセルの第1のメモリセルに、第1のメモリセルのメモリセル出力端 子を後続のメモリセルのメモリセル入力端子に選択的に結合する相互接続ネット ワークと、 論理素子がいつシフトレジスタとして構成されるかを制御するための制御論理 とを含む、論理素子。 7.論理素子がシフトレジスタとして構成されるかどうかを前記制御論理に選択 させるための構成メモリ構造をさらに含む、請求項6に記載の論理素子。 8.制御論理は、相互接続ネットワークに与えられるべき2つの非重複クロック 信号を発生するための論理を含む、請求項6に記載の論理素子。 9.複数のメモリセルの選択された1つを論理素子データ出力端子に結合するた めの復号化マルチプレクサをさらに含む、請求項6に記載の論理素子。 10.論理素子データ入力端子を複数のメモリセルの選択された1つに選択的に 結合するためのデマルチプレクサをさらに含む、請求項6に記載の論理素子。 11.相互接続ネットワークは、 第1のメモリセルから論理素子データ入力端子を分離するための第2のパスト ランジスタと、 第1のメモリセルのメモリセル出力端子に選択的に結合されるインバータとを 含み、インバータはインバータ入力端子およびインバータ出力端子を含み、さら に、 インバータ入力端子から第1のメモリセルのメモリセル出力端子を分離するた めの第3のパストランジスタと、 インバータ出力端子から後続のメモリセルのメモリセル入力端子を分離するた めの第4のパストランジスタとを含む、請求項6に記載の論理素子。 12.相互接続ネットワークは、 論理素子データ入力端子を複数のメモリセルの選択された1つに選択的に結合 するためのデマルチプレクサと、 デマルチプレクサから論理素子データ入力端子を分離するための第1のパスト ランジスタとをさらに含む、請求項11に記載の論理素子。 13.制御論理は、論理素子がシフトレジスタとして構成される場合に複数のメ モリセル間でデータをいつシフトさせるかを制御するためのユーザクロック端子 をさらに含む、請求項6に記載の論理素子。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/754,421 | 1996-11-22 | ||
US08/754,421 US5889413A (en) | 1996-11-22 | 1996-11-22 | Lookup tables which double as shift registers |
PCT/US1997/009314 WO1998023033A1 (en) | 1996-11-22 | 1997-06-16 | Lookup tables which double as shift registers |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001504657A true JP2001504657A (ja) | 2001-04-03 |
JP3871718B2 JP3871718B2 (ja) | 2007-01-24 |
Family
ID=25034725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52361298A Expired - Lifetime JP3871718B2 (ja) | 1996-11-22 | 1997-06-16 | シフトレジスタとして倍加するルックアップテーブル |
Country Status (5)
Country | Link |
---|---|
US (3) | US5889413A (ja) |
EP (1) | EP0940012B1 (ja) |
JP (1) | JP3871718B2 (ja) |
DE (1) | DE69711678T2 (ja) |
WO (1) | WO1998023033A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013009306A (ja) * | 2011-04-29 | 2013-01-10 | Semiconductor Energy Lab Co Ltd | プログラマブルロジックデバイス |
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1997
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- 1997-06-16 WO PCT/US1997/009314 patent/WO1998023033A1/en active IP Right Grant
- 1997-06-16 DE DE69711678T patent/DE69711678T2/de not_active Expired - Lifetime
- 1997-06-16 JP JP52361298A patent/JP3871718B2/ja not_active Expired - Lifetime
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1999
- 1999-02-18 US US09/253,313 patent/US6118298A/en not_active Expired - Lifetime
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Cited By (2)
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JP2013009306A (ja) * | 2011-04-29 | 2013-01-10 | Semiconductor Energy Lab Co Ltd | プログラマブルロジックデバイス |
US9165942B2 (en) | 2011-04-29 | 2015-10-20 | Semiconductor Energy Laboratory Co., Ltd. | Programmable logic device |
Also Published As
Publication number | Publication date |
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JP3871718B2 (ja) | 2007-01-24 |
EP0940012A1 (en) | 1999-09-08 |
DE69711678D1 (de) | 2002-05-08 |
WO1998023033A1 (en) | 1998-05-28 |
US6118298A (en) | 2000-09-12 |
EP0940012B1 (en) | 2002-04-03 |
US6262597B1 (en) | 2001-07-17 |
US5889413A (en) | 1999-03-30 |
DE69711678T2 (de) | 2002-09-26 |
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