The PLCs are also coupled to the DSP through {TAIL ~ a separate DMA sharing unit} to the DSP, and particularly to {HEAD ~ the DSP memory} 
The PLCs are also coupled to the DSP through { TAIL ~ a separate DMA sharing unit } to the DSP , and particularly to { HEAD ~ the DSP memory }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD