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CODEC与DSP

各位TI工程师:

        现在需要用C6455实现CODEC(TVL320AIC12K)的环路,利用C6455的I2C接口实现CODEC寄存器的配置,在配置中,当I2C发送开始信号和地址数据后,SDA的数据线被拉成1.8V,而CODEC芯片有数字电源引脚接的1.8V,不知道是不是相互影响!大家有没有这方面的开发的啊?在线等,谢谢