JP2009517725A - メモリ・システム内で不確定な読み取りデータ待ち時間を可能にする方法及びシステム - Google Patents
メモリ・システム内で不確定な読み取りデータ待ち時間を可能にする方法及びシステム Download PDFInfo
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Abstract
【解決手段】 この方法は、局所データ・パケットが受信されているかどうかを判断するステップを含む。局所データ・パケットが受信されている場合は、局所データ・パケットはバッファ装置内に格納される。この方法は、更に、バッファ装置がデータ・パケット含むかどうかを判断するステップ、及び、データ・パケットを上流チャネルを介してメモリ・コントローラに伝送するための上流ドライバがアイドル状態であるかどうかを判断するステップも含む。バッファがデータ・パケットを含み、上流ドライバがアイドル状態である場合は、データ・パケットは上流ドライバに伝送される。この方法は、更に、上流データ・パケットが受信されているかどうかを判断するステップを含む。上流データ・パケットは、フレーム開始インジケータと、上流データ・パケットを対応する読み取り命令と関連付ける際にメモリ・コントローラにより用いられる識別タグとを含むフレーム・フォーマットである。上流データ・パケットが受信されており、上流ドライバがアイドル状態でない場合は、上流データ・パケットはバッファ装置内に格納される。上流データ・パケットが受信されており、バッファ装置がデータ・パケットを含まず、上流ドライバがアイドル状態である場合は、上流データ・パケットは上流ドライバに伝送される。上流ドライバがアイドル状態でない場合は、進行中のあらゆるデータ・パケットは上流ドライバに伝送され続ける。
【選択図】 図4
Description
Claims (25)
- 不確定な読み取りデータ待ち時間をサポートするための方法であって、
局所データ・パケットが受信されているかどうかを判断するステップと、
局所データ・パケットが受信されている場合は、前記局所データ・パケットをバッファ装置内に格納するステップと、
前記バッファ装置がデータ・パケットを含むかどうかを判断するステップと、
前記データ・パケットを上流チャネルを介してメモリ・コントローラに伝送するための上流ドライバがアイドル状態であるかどうかを判断するステップと、
前記バッファ装置がデータ・パケットを含み、前記上流ドライバがアイドル状態である場合は、前記データ・パケットを前記上流ドライバに伝送するステップと、
上流データ・パケットが受信されているかどうかを判断するステップであって、前記上流データ・パケットは、フレーム開始インジケータと、前記上流データ・パケットを対応する読み取り命令と関連付ける際に前記メモリ・コントローラにより用いられる識別タグとを含むフレーム・フォーマットである、ステップと、
上流データ・パケットが受信されており、前記上流ドライバがアイドル状態でない場合は、前記上流データ・パケットを前記バッファ装置内に格納するステップと、
上流データ・パケットが受信されており、前記バッファ装置がデータ・パケットを含まず、前記上流ドライバがアイドル状態である場合は、前記上流データ・パケットを前記上流ドライバに伝送するステップと、
前記上流ドライバがアイドル状態でない場合は、進行中のあらゆるデータ・パケットを伝送し続けるステップと
を含む方法。 - 局所データ・パケットが受信されているかどうかを判断する前記ステップ、前記バッファ装置がデータ・パケットを含むかどうかを判断する前記ステップ、上流ドライバはアイドル状態であるかどうかを判断する前記ステップ、及び、データ・パケットが受信されているかどうかを判断する前記ステップは、周期的に実行される、請求項1に記載の方法。
- 前記周期は上流チャネル・サイクル毎に一度である、請求項2に記載の方法。
- 前記バッファ装置は複数のデータ・パケットを含み、前記データ・パケットは優先順位付けアルゴリズムに基づいて選択される、請求項1に記載の方法。
- 前記優先順位付けアルゴリズムは、前記データ・パケットに対応する前記読み取り命令の経過時間に基づいて前記データ・パケットを選択する、請求項4に記載の方法。
- 前記優先順位付けアルゴリズムは、前記データ・パケットと関連付けられた優先順位に基づいて前記データ・パケットを選択する、請求項4に記載の方法。
- 前記フレーム・フォーマットは、バス循環冗長コード(バスCRC)のフィールドを更に含む、請求項1に記載の方法。
- 前記局所データ・パケットをバッファ装置内に格納する前記ステップは、前記局所データ・パケットをフォーマットするステップを含み、前記フォーマットするステップは、前記局所データ・パケットを前記フレーム・フォーマットに直列化するステップと、前記フレーム開始インジケータ、前記識別タグ、及び前記バスCRCに値を挿入するステップとを含む、請求項7に記載の方法。
- 上流データ・パケットを下流ハブ装置から受信するための上流レシーバと、局所データ・パケットを局所格納装置から受信するためのメモリ・インターフェースとを含む、データ・パケットを受信するための装置であって、前記データ・パケットの各々は、フレーム開始インジケータと、前記上流データ・パケットを対応する読み取り命令と関連付ける際にメモリ・コントローラにより用いられる識別タグとを含むフレーム・フォーマットである、装置と、
上流チャネルを介して前記データ・パケットを前記メモリ・コントローラに伝送するための上流ドライバと、
局所データ・パケットが受信されているかどうかを判断するステップと、
局所データ・パケットが受信されている場合は、前記局所データ・パケットをバッファ装置内に格納するステップと、
前記バッファ装置がデータ・パケットを含むかどうかを判断するステップと、
前記上流ドライバがアイドル状態であるかどうかを判断するステップと、
前記バッファ装置がデータ・パケットを含み、前記上流ドライバがアイドル状態である場合は、前記データ・パケットを前記上流ドライバに伝送するステップと、
上流データ・パケットが受信されているかどうかを判断するステップであって、前記上流データ・パケットは、フレーム開始インジケータと、前記上流データ・パケットを対応する読み取り命令と関連付ける際に前記メモリ・コントローラにより用いられる識別タグとを含むフレーム・フォーマットである、ステップと、
上流データ・パケットが受信されており、前記上流ドライバがアイドル状態でない場合は、前記上流データ・パケットを前記バッファ装置内に格納するステップと、
上流データ・パケットが受信されており、前記バッファ装置がデータ・パケットを含まず、前記上流ドライバがアイドル状態である場合は、前記上流データ・パケットを前記上流ドライバに伝送するステップと、
前記上流ドライバがアイドル状態でない場合は、進行中のあらゆるデータ・パケットを伝送し続けるステップと
を容易にするための命令を含む機構と
を含む、メモリ・システム内のハブ装置。 - 前記上流チャネルは、デイジー・チェーン・チャネルである、請求項9に記載のハブ装置。
- 前記ハブ装置はメモリ・モジュール上に物理的に配置される、請求項9に記載のハブ装置。
- 前記バッファ装置を更に含む、請求項9に記載のハブ装置。
- 局所データ・パケットが受信されているかどうかを判断する前記ステップ、前記バッファ装置はデータ・パケットを含むかどうかを判断する前記ステップ、上流ドライバはアイドル状態であるかどうかを判断する前記ステップ、及び、データ・パケットが受信されているかどうかを判断する前記ステップは、周期的に実行される、請求項9に記載のハブ装置。
- 前記周期は上流チャネル・サイクル毎に一度である、請求項13に記載のハブ装置。
- 前記バッファ装置は複数のデータ・パケットを含み、前記データ・パケットは優先順位付けアルゴリズムに基づいて選択される、請求項9に記載のハブ装置。
- 前記優先順位付けアルゴリズムは、前記データ・パケットに対応する前記読み取り命令の経過時間に基づいて前記データ・パケットを選択する、請求項15に記載のハブ装置。
- 前記優先順位付けアルゴリズムは、前記データ・パケットと関連付けられた優先順位に基づいて前記データ・パケットを選択する、請求項15に記載のハブ装置。
- 1つ又は複数のメモリ装置がデイジー・チェーン・チャネルによりメモリ・コントローラに接続された1つ又は複数のメモリ・モジュールであって、読み取りデータが、識別タグ及びフレーム開始インジケータを含むフレーム・フォーマットを用いて前記メモリ・コントローラに戻される、1つ又は複数のメモリ・モジュールと、
読み取りデータ待ち時間を最小限にし、前記メモリ・コントローラへの不確定な読み取りデータ戻り時間を可能にするために、割り込み型局所データ合流アルゴリズムと共に用いられるコントローラ・チャネル・バッファを含む、アドレス、コマンド、及びデータをバッファするための、前記メモリ・モジュール上の1つ又は複数のハブ装置と
を含むメモリ・システム。 - 前記デイジー・チェーン・チャネル内の二地点間リンクを含む、請求項18に記載のメモリ・システム。
- 前記ハブ装置は、コントローラ・チャネル・バッファ・アンロード優先順位付けアルゴリズムを更に含む、請求項18に記載のメモリ・システム。
- 前記割り込み型局所データ合流アルゴリズムは、
局所データ・パケットが受信されているかどうかを判断するステップと、
局所データ・パケットが受信されている場合は、前記局所データ・パケットを前記コントローラ・チャネル・バッファに配置されたバッファ装置内に格納するステップと、
前記バッファ装置がデータ・パケットを含むかどうかを判断するステップと、
データ・パケットを上流チャネルを介してメモリ・コントローラに伝送するための上流ドライバがアイドル状態であるかどうかを判断するステップと、
前記バッファ装置がデータ・パケットを含み、前記上流ドライバがアイドル状態である場合は、前記データ・パケットを前記上流ドライバに伝送するステップと、
上流データ・パケットが受信されているかどうかを判断するステップと、
上流データ・パケットが受信されており、前記上流ドライバがアイドル状態でない場合は、前記上流データ・パケットを前記バッファ装置内に格納するステップと、
上流データ・パケットが受信されおり、前記バッファ装置がデータ・パケットを含まず、前記上流ドライバがアイドル状態である場合は、前記上流データ・パケットを前記上流ドライバに伝送するステップと、
前記上流ドライバがアイドル状態でない場合は、進行中のあらゆるデータ・パケットを伝送し続けるステップと
を含む、請求項18に記載のメモリ・システム。 - 1つ又は複数のメモリ装置がデイジー・チェーン・チャネルによりメモリ・コントローラに接続された1つ又は複数のメモリ・モジュールであって、読み取りデータが、識別タグ及びフレーム開始インジケータを含むフレーム・フォーマットを用いて前記メモリ・コントローラに戻される、1つ又は複数のメモリ・モジュールと、
読み取りデータ待ち時間を最小限にし、前記メモリ・コントローラへの不確定な読み取りデータ戻り時間を可能にするために、割り込み型局所データ合流アルゴリズムと共に用いられるコントローラ・チャネル・バッファを含む、アドレス、コマンド、及びデータをバッファするための、前記メモリ・モジュールに接続された、1つ又は複数のハブ装置と
を含むメモリ・システム。 - 前記デイジー・チェーン・チャネル内の二地点間リンクを含む、請求項22に記載のメモリ・システム。
- 前記ハブ装置は、コントローラ・チャネル・バッファ・アンロード優先順位付けアルゴリズムを更に含む、請求項22に記載のメモリ・システム。
- 前記割り込み型局所データ・マージ・アルゴリズムは、
局所データ・パケットが受信されているかどうかを判断するステップと、
局所データ・パケットが受信されている場合は、前記局所データ・パケットを前記コントローラ・チャネル・バッファに配置されたバッファ装置内に格納するステップと、
前記バッファ装置がデータ・パケットを含むかどうかを判断するステップと、
データ・パケットを上流チャネルを介してメモリ・コントローラに伝送するための上流ドライバがアイドル状態であるかどうかを判断するステップと、
前記バッファ装置がデータ・パケットを含み、前記上流ドライバがアイドル状態である場合は、前記データ・パケットを前記上流ドライバに伝送するステップと、
前記上流データ・パケットが受信されているかどうかを判断するステップと、
上流データ・パケットが受信されており、前記上流ドライバがアイドル状態でない場合は、前記上流データ・パケットを前記バッファ装置内に格納するステップと、
上流データ・パケットが受信されており、前記バッファ装置がデータ・パケットを含まず、前記上流ドライバがアイドル状態である場合は、前記上流データ・パケットを前記上流ドライバに伝送するステップと、
前記上流ドライバがアイドル状態でない場合は、進行中のあらゆるデータ・パケットを伝送し続けるステップと
を含む、請求項22に記載のメモリ・システム。
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WO2007060250A1 (en) | 2007-05-31 |
US8145868B2 (en) | 2012-03-27 |
US8327105B2 (en) | 2012-12-04 |
JP5186382B2 (ja) | 2013-04-17 |
CN101300556A (zh) | 2008-11-05 |
US8151042B2 (en) | 2012-04-03 |
US20070286199A1 (en) | 2007-12-13 |
US7685392B2 (en) | 2010-03-23 |
US20120151171A1 (en) | 2012-06-14 |
TW200739353A (en) | 2007-10-16 |
US8495328B2 (en) | 2013-07-23 |
EP1958073A1 (en) | 2008-08-20 |
TWI399649B (zh) | 2013-06-21 |
US20120151172A1 (en) | 2012-06-14 |
US20070160053A1 (en) | 2007-07-12 |
CN101300556B (zh) | 2010-05-19 |
US20070183331A1 (en) | 2007-08-09 |
US20070286078A1 (en) | 2007-12-13 |
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