AM5706 PRU2 外接以太网

找了一些相关的资料可以参考一下。

tao hou2 说：

1、PR2_MII0_RXLINK信号的作用？R178、R188是不是只能装一个？分别装R178、R188时有何区别？

https://e2e.ti.com/support/processors/f/791/t/738135      

6.1章节 http://www.ti.com/lit/ug/sprui97b/sprui97b.pdf

The COL functionality on the MII interface is not used. The TLK105L contains a feature that must be enabled via software that provides rapid link status on the COL pin. Therefore, this pin is connected to the RXLINK input to the PRU-ICSS ports for this purpose.

tao hou2 说：

2、COL信号只用于半双工模式，在全双工模式中有没有用？

http://processors.wiki.ti.com/index.php/Processor_SDK_RTOS_ICSS-EMAC-Design#Half_Duplex_Support