DM8148开发板的原理图中 mcasp共有5个,以mcasp2为例,为何它只有MCA[2]_AHCLKX、MCA[2]_ACLKX、MCA[2]_AFSX(发送部分),而没有相应的接收管脚呢?现在我这边的应用情景是,用mcasp2跟aic3104芯片进行连接,进行音频对讲功能。有一个外部晶振24.576Mhz给MCA[2]_AHCLKX提供外部时钟,同事也给aic3104芯片的MCLK提供时钟。如果mcasp2没有接收管脚的话,那就没有接收时钟了,数据部分如何获取呢?请大侠帮忙讲解一下。
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
你好,
请看TRM MCASP下面的介绍:
The receiver also has the option to operate synchronously from the ACLKX and AFSX signals. This is achieved when the ASYNC bit in the transmit clock control register (ACLKXCTL) is cleared to 0 (see Figure 16-17).