why it point out"unknow device" | Cypress Semiconductor
why it point out"unknow device"
good days to every experienced man,
As the picture showed in follow, EEROM 24LC64 is conectted to 68013A to keep the firmware .At beginning, i can download my .iic code to EEROM and it worked very well, but as more and more times i powered on and off it, my conputer remind me "unknow device" .when i deconnect the resistance R206, it remind me find USB device and I can download .iic code by console, and then i connect R206,it works well ao before, but i can only keep a while and after powerd on and off a few times again it remain be an "unknow device". i think the most problems happened on EEROM,maybe i should change one, oher way is change c2 renumed to c0 renumed, but maybe there are better solutions,wish your help.