| 一种避免I2C接口因异常复位而死锁的方案 |
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| 作者单位： | 解放军理工大学气象学院 江苏南京211101 |
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| 摘 要： | 本文介绍了I2C接口协议的基本内容,分析了实际应用中可能出现的因异常复位导致的I2C接口死锁,并且提出了一种通过人为施加时钟脉冲到SCL信号线上来解除死锁的方案。
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| 关 键 词： | I2C总线 死锁 CPLD 异常复位 |
A Solution to Avoid Deadlock of I2C Interface Caused by Unexpected Reset |
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| CHENG Lin. A Solution to Avoid Deadlock of I2C Interface Caused by Unexpected Reset[J]. Journal of Wuxi South Ocean College, 2007, 0(4) |
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| Authors: | CHENG Lin |
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| Abstract: | In this paper,base knowledge of I2C interface and protocol is introduced.The deadlock condition of I2C bus is analyzed when system is reset unexpectedly.A solution is proposed to avoid the deadlock of I2C bus.It uses an external SCL signal and produces a series of clock pulse to simulate the MASTER of I2C to recover the SLAVE from deadlock status. |
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| Keywords: | I2C bus deadlock CPLD unexpected reset |
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