如何清除RT1052 uSDHC PRES_STATE寄存器的某一位

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如何清除RT1052 uSDHC PRES_STATE寄存器的某一位

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1318614689
Contributor I

我在使用uSDHC时,发现如果一个CMD指令按照SDIO标准要求可能返回或不返回响应,如果它没有返回响应,那么PRES_STATE的CIHB不会被清除,而且CMD响应超时中断也正常触发,但是不清除CIHB导致我无法发送新CMD指令。这个寄存器好像是只读的,只有复位uSDHC才能清除它吗?

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Sabina_Bruce
NXP Employee
NXP Employee

Hello ,

Hope you are doing well.

I'll be glad to help you. In order for me to better understand the question could you please write it in english. In addition, could you please describe how to reproduce this behavior in our evaluation board so that I can check it with detail from my end. 

Best Regards,

Sabina

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