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DS90UB914A-Q&DS90UB913的链接问题



Hi

求助。目前问题是:

1.  主控能与近端的914进行I2C通信,且能从0x06寄存器中读到913的地址,但与913通信没有ACK信号;

2.  上电后,914的lock管脚和pass管脚闪烁,用示波器测量的lock管脚电平如下图:

条件为:

1. 913端已经通过954验证出图;

2. 914端的电路图如下:

3. 914的管脚配置为:

4. 914的寄存器配置为:

     0x03寄存器写入0x0D,auto ACK;0x21写入0x97;