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关于28379D的X-BAR

程序员文章站 2022-06-09 11:53:48
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1. 什么是X-BAR?

来自TI官方文档:

The crossbars (referred to as X-BAR throughout this document) provide flexibility to connect device inputs,
outputs, and internal resources in a variety of configurations.
The device contains a total of four X-BARs: the Input X-BAR, the Output X-BAR, the CLB X-BAR and the
ePWM X-BAR. Each of the X-BARs is named according to where they take signals. For example, the
Input X-BAR brings external signals “in” to the device. The Output X-BAR takes internal signals “out” of
the device to a GPIO. The CLB X-BAR and ePWM X-BAR take signals to the CLB and ePWM modules
respectively.

不是很明白…

【我的理解】X-BAR包括两个部分:
1. input-xbar
2. output-xbar
SO…What is input-xbar and output-xbar?

来自TI社区:F28377D的input x-bar 和output x-bar 问题

这款芯片新增的input x-bar 和output x-bar 功能:
1.output x-bar可以将DSP内部的一些信号引出到任意一个GPIO口上
2.input x-bar可以将任意一个GPIO口的信号,引到DSP内部,比如任何一个GPIO口的信号,都可以配制成EPWM模块的TZ信号

2. input x-bar

关于28379D的X-BAR

3. 总结:

X-BAR比较像连接DSP内部各个子模块和GPIO之间的管道,可以比较灵活
地更改连接。但不是所有模块都有,这个需要具体去看。有X-BAR功能地
模块有:EPWM;ADC;DAC;CMPSS(比较模拟器)等
相关标签: DSP