• 使用WB收音芯片Si4736的工程中IIC通信不正常,应如何处理?

  • 创建于2016-06-23

1个回答

  • _世强 (0)

    一、检查客户的平台,硬件没有明显问题;二、将Si4736电路部分飞线到Si47xx的EVB上,平台可以正常工作,说明硬件没有问题;三、使用逻辑分析仪抓取客户平台上IIC、RST、Vcc的时序,没有问题;四、使用逻辑分析仪抓取IIC上写入的数据,发现所有的写命令都是正常的,但是读命令时芯片就出现无响应的问题。观察抓到的数据波形可以看到读命令时CLK的波形出现错乱,导致读命令时不能接收到有效ACK;五、经过客户更改读命令时CLK出现的时序错误,平台可以正常通讯。

    创建于2016-06-23

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