一种JTAG Master数据传输方法、系统、电子设备及存储介质
By latching the register value before JTAG Master data transmission, the TAP state machine error caused by register reconfiguration is resolved, thus ensuring the correctness and stability of data transmission.
CN115373766BActive Publication Date: 2026-07-17SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD
- Filing Date
- 2022-08-26
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
When the existing JTAG Master reconfigures its registers in the pause state, the original register values are overwritten, affecting the judgment conditions of the TAP state machine and causing errors.
Method used
The value in the register is latched before data transmission to ensure that the original value is not lost when the register is reconfigured in the pause state, thereby ensuring that the judgment conditions of the TAP state machine are correct.
Benefits of technology
By latching register values, the normal operation of the TAP state machine and the correctness of data transmission are ensured, avoiding errors caused by changes in register values.
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Figure CN115373766B_ABST
Abstract
本发明涉及数据传输技术领域，具体涉及JTAG Master数据传输方法、系统、电子设备及存储介质。该方法对JTAG Master模块中的寄存器进行配置；寄存器配置完成后的JTAG Master模块进行数据传输；数据传输完成后，如果需要进行数据传输，则JTAG Master模块数据传输开始前对JTAGMaster模块的状态进行判断，若JTAG Master模块处于pause状态下需要继续传输数据，若是则在数据传输前，则锁存寄存器中值，然后再对寄存器进行配置，配置完成后再继续进行数据传输。本发明在pause状态下重新配置寄存器时，之前的值还存在，不至于消失，这样，当启动信号发出之前，两个值都在，都可以用。这样可以保证TAP状态机的正常运转，数据的正确性。
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