Wiznet W7500 Reference Manual page 178

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[0] ERR_CLR – Returns the status of DMA_ERR, or set the signal LOW.
This read/write register returns the status of DMA_ERR, and enables set DMA_ERR LOW.
Read as :
0 : DMA_ERR is LOW
1 : DMA_ERR is HIGH
Write as :
0 : No effect, status of DMA_ERR is unchanged.
1 : Sets DMA_ERR LOW.
W7500x Reference Manual Version1.1.0
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