公开(公告)号：US08626974B2

公开(公告)日：2014-01-07

申请号：US13354018

申请日：2012-01-19

申请人： Ramprasad Raghavan ,  Alpana Bastimane

发明人： Ramprasad Raghavan ,  Alpana Bastimane

IPC分类号： G06F13/36

CPC分类号： G06F3/0626 ,  G06F3/0635 ,  G06F3/067

摘要： Methods and systems for reducing the signal path count between circuits within a SAS expander used for establishing SAS connections. The system comprises a SAS expander. The SAS expander comprises a plurality of link layer control circuits, each link layer control circuit adapted to communicatively couple with a SAS device. The SAS expander further comprises a connection manager communicatively coupled with the link layer control circuits for routing communications between the link layer control circuits. Each of the plurality of link layer control circuits is adapted to establish a SAS connection with another link layer control circuit through the connection manager by segmenting a plurality of interconnect signals into multiple data segments for sequential transmission to the connection manager, (e.g., without impacting the performance of the connection manager). The connection manager interprets the data segments to extract the plurality of interconnect signals to establish the SAS connection.

摘要翻译： 用于减少用于建立SAS连接的SAS扩展器之间的电路之间的信号路径计数的方法和系统。 该系统包括SAS扩展器。 SAS扩展器包括多个链路层控制电路，每个链路层控制电路适于与SAS设备通信地耦合。 SAS扩展器还包括通信地与链路层控制电路耦合的连接管理器，用于路由链路层控制电路之间的通信。 多个链路层控制电路中的每一个适于通过连接管理器通过将多个互连信号分割成多个数据段来建立与另一个链路层控制电路的SAS连接，以便顺序传输到连接管理器（例如，不影响 连接管理器的性能）。 连接管理器解释数据段以提取多个互连信号以建立SAS连接。

公开(公告)号：US20130191573A1

公开(公告)日：2013-07-25

申请号：US13354018

申请日：2012-01-19

申请人： Ramprasad Raghavan ,  Alpana Bastimane

发明人： Ramprasad Raghavan ,  Alpana Bastimane

IPC分类号： G06F13/14

CPC分类号： G06F3/0626 ,  G06F3/0635 ,  G06F3/067

摘要： Methods and systems for reducing the signal path count between circuits within a SAS expander used for establishing SAS connections. The system comprises a SAS expander. The SAS expander comprises a plurality of link layer control circuits, each link layer control circuit adapted to communicatively couple with a SAS device. The SAS expander further comprises a connection manager communicatively coupled with the link layer control circuits for routing communications between the link layer control circuits. Each of the plurality of link layer control circuits is adapted to establish a SAS connection with another link layer control circuit through the connection manager by segmenting a plurality of interconnect signals into multiple data segments for sequential transmission to the connection manager, (e.g., without impacting the performance of the connection manager). The connection manager interprets the data segments to extract the plurality of interconnect signals to establish the SAS connection.

摘要翻译： 用于减少用于建立SAS连接的SAS扩展器之间的电路之间的信号路径计数的方法和系统。 该系统包括SAS扩展器。 SAS扩展器包括多个链路层控制电路，每个链路层控制电路适于与SAS设备通信地耦合。 SAS扩展器还包括通信地与链路层控制电路耦合的连接管理器，用于路由链路层控制电路之间的通信。 多个链路层控制电路中的每一个适于通过连接管理器通过将多个互连信号分割成多个数据段来建立与另一链路层控制电路的SAS连接，以便顺序传输到连接管理器（例如，不影响 连接管理器的性能）。 连接管理器解释数据段以提取多个互连信号以建立SAS连接。

公开(公告)号：US20140068177A1

公开(公告)日：2014-03-06

申请号：US13602498

申请日：2012-09-04

申请人： Ramprasad Raghavan

发明人： Ramprasad Raghavan

IPC分类号： G06F12/00

CPC分类号： G06F13/36 ,  G06F13/4022 ,  G06F2213/0028

摘要： Methods and structure are provided for representing ports of a Serial Attached SCSI (SAS) expander circuit within routing memory. The SAS expander includes a plurality of PHYs and a routing memory. The routing memory includes entries that each indicate a set of PHYs available for initiating a connection with a SAS address, and also includes an entry that represents a SAS port with a start tag indicating a first PHY of the port and a length tag indicating a number of PHYs in the port. The SAS expander also includes a Content Addressable Memory (CAM) including entries that each associate a SAS address with an entry in the routing memory. Further, the SAS expander includes a controller that receives a request for a SAS address, uses the CAM to determine a corresponding routing memory entry for the requested SAS address, and selects the port indicated by the corresponding routing memory entry.

公开(公告)号：US20140068124A1

公开(公告)日：2014-03-06

申请号：US13602526

申请日：2012-09-04

申请人： Ramprasad Raghavan

发明人： Ramprasad Raghavan

IPC分类号： G06F13/36

CPC分类号： G06F13/36 ,  G06F13/4022 ,  G06F2213/0028

摘要： Methods and structure are provided for representing ports of a Serial Attached SCSI (SAS) expander circuit within routing memory. The SAS expander includes a plurality of PHYs and a routing memory. The routing memory includes entries that each indicate a set of PHYs available for initiating a connection with a SAS address, and also includes an entry that represents a SAS port with a start tag indicating a first PHY of the port and a length tag indicating a number of PHYs in the port. The SAS expander also includes a Content Addressable Memory (CAM) including entries that each associate a SAS address with an entry in the routing memory. Further, the SAS expander includes a controller that receives a request for a SAS address, uses the CAM to determine a corresponding routing memory entry for the requested SAS address, and selects the port indicated by the corresponding routing memory entry.

摘要翻译： 提供了用于表示路由存储器内的串行连接SCSI（SAS）扩展器电路的端口的方法和结构。 SAS扩展器包括多个PHY和路由存储器。 路由存储器包括各自指示可用于发起与SAS地址的连接的一组PHY的条目，并且还包括表示具有指示端口的第一PHY的起始标签的SAS端口的条目和指示数字的长度标签 的端口中的PHY。 SAS扩展器还包括内容可寻址存储器（CAM），其包括每个将SAS地址与​​路由存储器中的条目相关联的条目。 此外，SAS扩展器包括接收对SAS地址的请求的控制器，使用CAM确定所请求的SAS地址的对应的路由存储器条目，并且选择由相应的路由存储器条目指示的端口。

公开(公告)号：US09032143B2

公开(公告)日：2015-05-12

申请号：US13602498

申请日：2012-09-04

申请人： Ramprasad Raghavan

发明人： Ramprasad Raghavan

IPC分类号： G06F12/00 ,  G06F13/36 ,  G06F13/40 ,  G06F13/00

CPC分类号： G06F13/36 ,  G06F13/4022 ,  G06F2213/0028

摘要： Methods and structure are provided for representing ports of a Serial Attached SCSI (SAS) expander circuit within routing memory. The SAS expander includes a plurality of PHYs and a routing memory. The routing memory includes entries that each indicate a set of PHYs available for initiating a connection with a SAS address, and also includes an entry that represents a SAS port with a start tag indicating a first PHY of the port and a length tag indicating a number of PHYs in the port. The SAS expander also includes a Content Addressable Memory (CAM) including entries that each associate a SAS address with an entry in the routing memory. Further, the SAS expander includes a controller that receives a request for a SAS address, uses the CAM to determine a corresponding routing memory entry for the requested SAS address, and selects the port indicated by the corresponding routing memory entry.

公开(公告)号：US09026727B2

公开(公告)日：2015-05-05

申请号：US13602526

申请日：2012-09-04

申请人： Ramprasad Raghavan

发明人： Ramprasad Raghavan

IPC分类号： G06F12/00 ,  G06F13/36 ,  G06F13/00

CPC分类号： G06F13/36 ,  G06F13/4022 ,  G06F2213/0028

摘要： Methods and structure are provided for representing ports of a Serial Attached SCSI (SAS) expander circuit within routing memory. The SAS expander includes a plurality of PHYs and a routing memory. The routing memory includes entries that each indicate a set of PHYs available for initiating a connection with a SAS address, and also includes an entry that represents a SAS port with a start tag indicating a first PHY of the port and a length tag indicating a number of PHYs in the port. The SAS expander also includes a Content Addressable Memory (CAM) including entries that each associate a SAS address with an entry in the routing memory. Further, the SAS expander includes a controller that receives a request for a SAS address, uses the CAM to determine a corresponding routing memory entry for the requested SAS address, and selects the port indicated by the corresponding routing memory entry.

摘要翻译： 提供了用于表示路由存储器内的串行连接SCSI（SAS）扩展器电路的端口的方法和结构。 SAS扩展器包括多个PHY和路由存储器。 路由存储器包括各自指示可用于发起与SAS地址的连接的一组PHY的条目，并且还包括表示具有指示端口的第一PHY的起始标签的SAS端口的条目和指示数字的长度标签 的端口中的PHY。 SAS扩展器还包括内容可寻址存储器（CAM），其包括每个将SAS地址与​​路由存储器中的条目相关联的条目。 此外，SAS扩展器包括接收对SAS地址的请求的控制器，使用CAM确定所请求的SAS地址的对应的路由存储器条目，并且选择由相应的路由存储器条目指示的端口。