Aim of schematic is:·        While stsub4500 is in explicit contract, if there is a current surge system, drop induced by surge will be absorbed by RC in order to avoid stusb4500 to disconnect due to UVLO.  ·        During VBUS voltage ramp up, there...

Hi Yan You are true the bit 2 and 3 of the Register ALERT and ALERT_MASK are not used so you don't care about themfor each of the 4 bits of the ALERT register that are useful , you can clear it by reading 1 registerthe register bit 0 is ALERT on Phy ...

Hi the alert are cleared by reading relevant register with naming of SW package STSW-STUSB003 available on Web updated recently bit 6 CC_DETECTION_STATUS_AL : read register @ 0x0D PORT_STATUS_TRANS bit 5 MONITORING_STATUS_AL : read register @ 0x0F ...