Other Parts Discussed in Thread: UCD90160
Hi team:
we measured UCD90160A input power and output GPIO(for DCDC BUCK enable), detect CH2 GPIO voltage 780mV, is similar with CH1 VCC3V3 voltage value;
GPIO electric leakage will lead to mainboard DCDC chip enable , voltage output rise edge have "the stage";
datasheet can't find with V33A/V33D the logic relationship between GPIO, please help to solution, Thanks!
CH1: UCD9016_3V3(Pin 7 44~46)
CH2: VEN_CPLD_VDD1P8(Pin 14 GPIO4)
CH3: PSU_PWR_OK
UCD90160 Datasheet: