DAI/DPI总结

本文介绍了DAI/DPI系统中SRU如何连接DAI引脚缓冲区,实现灵活的信号路由。内容涵盖DAI/DPI相关的外围设备、输入/输出缓冲区,以及包括精密时钟发生器、异步采样率转换器等在内的多种数据源。

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shows how the DAI pin buffers are connected via the SRU. This allows for very flexible signal routing.

• Peripherals (A/B/C) associated with DAI/DPI

• DAI/DPI I/O pin buffers

Figure 9-1 Note that is a simplified representation of a DAI system. In a real representation, the SRU and DAI would show several types of data being routed from several sources including the following.

• Precision clock generators (PCG)

• Asynchronous sample rate converters (SRC)

• S/PDIF receiver

• DAI Interrupts (Miscellaneous)

• Peripheral timers

• Precision clock generators (PCG)

• Two wire interface (TWI)

• DPI Interrupts (Miscellaneous)I/O Pin Buffers

pin bufferFigure 9-3Signal Routing Units (SRUs)The SRU for the DAI contains seven groups that are named sequentially A

as shown below.

• Group B routes serial data signals

• Group D routes pin signals

• Group F routes pin output enable signals

through C. Each group routes various signals with a specific purpose:

• Group B routes pin output signals

 

 

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