资 源 简 介
ABSTRACTThe GC4016 and GC4116 chips have internal power up reset circuits that need TIme todischarge before power can be reapplied after VCore power has been turned off. If power isre-applied too soon, the power up reset is not triggered, and the chip’s JTAG scan logic maycome up in an unknown state which will prevent any control bus accesses. This applicaTIonnote describes what causes the power up cycling problem and how the control bus lock-outcondiTIon can be avoided.
