WO2021056631A1 - 可自主回复写应答的axi总线传输装置 - Google Patents
可自主回复写应答的axi总线传输装置 Download PDFInfo
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- WO2021056631A1 WO2021056631A1 PCT/CN2019/111413 CN2019111413W WO2021056631A1 WO 2021056631 A1 WO2021056631 A1 WO 2021056631A1 CN 2019111413 W CN2019111413 W CN 2019111413W WO 2021056631 A1 WO2021056631 A1 WO 2021056631A1
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- fifo
- write
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- axi bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3041—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system component is an input/output interface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3055—Monitoring arrangements for monitoring the status of the computing system or of the computing system component, e.g. monitoring if the computing system is on, off, available, not available
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4265—Bus transfer protocol, e.g. handshake; Synchronisation on a point to point bus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
Description
Claims (5)
- 可自主回复写应答的AXI总线传输装置,其特征在于:本装置连接于AXI总线与本地总线之间,用于代替从设备返回写应答,本装置包括FIFO_A、FIFO_B、计数模块、对比模块以及选择器;FIFO_A与AXI总线相连,用于存放接收的AW通道发送的写命令中的awid和awlen信号,awid表示写命令的ID,每条写命令都有对应的ID值,awlen表示写命令中的写数据传输长度信息;计数模块与AXI总线相连,用于对实际接收到的有效数据进行计数,并将记录的实际数据传输长度信息写入FIFO_B中;FIFO_B的输入端与计数模块的输出端相连,用于存放实际数据接收长度信息;对比模块的输入端分别与FIFO_A和FIFO_B的输出端相连,用于对比FIFO_A与FIFO_B中存放的长度值是否相等,如果相等,输出0,否则输出2,0表示正确,2表示传输错误;选择器的输入端分别与对比模块的输出端和2相连,选择器的使能端连接lclk_dis和lrst,lclk_dis为从设备模块时钟关断信号,有效表示从设备模块时钟关断,lrst为从设备模块复位信号,有效表示从设备当前处于复位状态,如果当前lclk_dis或lrst有效,则选择输出2,否则输出对比模块的结果;选择器的输出为bresp,FIFO_A中的id值直接赋给bid,bresp和bid为本装置返回的写应答。
- 根据权利要求1所述的可自主回复写应答的AXI总线传输装置,其特征在于:计数模块与AXI总线的写数据通道W相连,写数据通道W中的写最后信号wlast决定计数模块的工作状态;W通道接收到有效数据,且当前wlast低无效时,计数模块从0开始计数,W通道每收到一个有效数据且wlast信号无效,计数值加1,当wlast高有效时,计数模块将当前记录的实际数据传输长度信息写入FIFO_B中,并将计数器清零。
- 根据权利要求1所述的可自主回复写应答的AXI总线传输装置,其特征在于:FIFO_A与AXI总线的写命令通道AW相连,AW通道接收到有效的AXI写命令,将awid、awlen信号值存入FIFO_A中。
- 根据权利要求1所述的可自主回复写应答的AXI总线传输装置,其特征在于:当FIFO_A和FIFO_B都不为空时,对比模块同时读取这两个FIFO中的值一次,其中FIFO_A中存放的id值赋给bid,并且对比这两个FIFO中存放的长度值是否相等,如果相等,输出0,否则输出2。
- 根据权利要求1或3所述的可自主回复写应答的AXI总线传输装置,其特征在于:FIFO_A可以连续或者间断地接收多条AXI写命令,针对每条写命令,计数模块都进行一次计数。
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CN101853237B (zh) * | 2010-05-31 | 2012-07-04 | 华为技术有限公司 | 片上系统及axi总线下的传输方法 |
CN103186492B (zh) * | 2011-12-28 | 2016-03-30 | 联芯科技有限公司 | 基于axi总线的数据一致性保护方法及其系统 |
CN102799509B (zh) * | 2012-07-10 | 2014-12-10 | 中国科学技术大学 | 基于双fpga芯片的高带宽可扩展复杂逻辑验证系统 |
CN103605632B (zh) * | 2013-11-18 | 2016-06-29 | 山东大学 | 一种axi总线与ahb总线的通信方法与装置 |
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CN109471824B (zh) * | 2018-11-22 | 2021-02-05 | 青岛方寸微电子科技有限公司 | 基于axi总线的数据传输系统及方法 |
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