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6678 FPGA需要对DSP的HOUT信号作什么处理?



在设计自己的6678硬件系统时,留意到EVM上FPGA有一根线DSP_HOUT与DSP相连,但具体做什么用是不知道的,EVM对这根线的说明如下:

DSP_HOUT status : This bit reflects the DSP_HOUT signal state.   
0 : DSP_HOUT state is low 
1 : DSP_HOUT state is high

对于HOUT信号,6678芯片上的说明如下:

The interrupt output pulse created by the IPCGRH register appears on device pin HOUT.

对于这个信号,外部HOST需要做什么处理?如果不做处理会产生什么影响?