在Ethercat状态机转换到OP之前特定的LAN9252寄存器必须通过SPI接口初始化吗？

嗨，我自己用的是LAN9252-ADD-ON的eval板（NoBeckhoff板）。在Windows 10上使用Twincat 3在简单的数字IO模式下，我已经能够正确操作了。现在我想继续使用SPI接口模式。我可以重新编程LAN9252多个微芯片XML文件的EEPROM。而且，我的SPI接口工作得很好，我可以读LAN9252寄存器。但是，由于LAN9252不能从INIT状态转换到OP状态，因此我在取得进一步的进展上遇到了困难。错误信息表示在状态转换过程中超时。我的问题是：在Ethercat状态机转换到OP之前，是否有一些特定的LAN9252寄存器必须通过SPI接口初始化？干杯，戴维



      以下为原文

    Hi,
I'm using the LAN9252-ADD-ON eval board by itself (No Beckhoff board).
I've been able to get correct operation in the simple Digital IO mode using Twincat 3 on Windows 10.

Now i"d like to proceed to SPI Interface mode. I can reprogram the EEPROM of the LAN9252 from
any of several Microchip xml files just fine. Also, my SPI interface works great and I can read LAN9252 registers.

However, I'm having trouble making further progress because the LAN9252 will not make the transition from the
INIT state to the OP state. The error message says that it times out during the state transition process.

My question is: Are there some specific LAN9252 registers that must be initialized via the SPI interface before the
Ethercat state machine will transition to OP?

Cheers,
David