STUSB1600 Datasheet, PDF (35/69 Pages) STMicroelectronics – Power hubs and docking stations

STUSB1600
I²C register map
5.1.9
HW_FAULT_STATUS
Address: 13h
Access: RO
Note: this register provides information on hardware fault conditions related to the internal
pull-up voltage in source power role and to the V_CONN power switches.
Table 26. HW_FAULT_STATUS register
Bit
Field Name
Reset
Description
7 VPU_OVP_FAULT
6 VPU_VALID
5 VCONN_SW_RVP_FAULT_CC1
4 VCONN_SW_RVP_FAULT_CC2
3 VCONN_SW_OCP_FAULT_CC1
2 VCONN_SW_OCP_FAULT_CC2
1 VCONN_SW_OVP_FAULT_CC1
0 VCONN_SW_OVP_FAULT_CC2
0b: voltage on CC pins is below OVP threshold of
0b
6.0 V
1b: voltage on CC pins is above OVP threshold of
6.0 V
0b: pull-up voltage on CC pins is below UVLO
1b
threshold of 2.8 V
1b: pull-up voltage on CC pins is above UVLO
threshold of 2.8 V (safe condition)
0b: no reverse voltage on V_CONN power switch
0b
connected to CC1
1b: reverse voltage detected on V_CONN power
switch connected to CC1
0b: no reverse voltage on V_CONN power switch
0b
connected to CC2
1b: reverse voltage detected on V_CONN power
switch connected to CC2
0b: no short circuit or overcurrent on V_CONN
0b
power switch connected to CC1
1b: short circuit or overcurrent detected on V_CONN
power switch connected to CC1
0b: no short circuit or overcurrent on V_CONN
0b
power switch connected to CC2
1b: short circuit or overcurrent detected on V_CONN
power switch connected to CC2
0b: no overvoltage on V_CONN power switch
0b
connected to CC1
1b: overvoltage detected on V_CONN power switch
connected to CC1
0b: no overvoltage on V_CONN power switch
0b
connected to CC2
1b: overvoltage detected on V_CONN power switch
connected to CC2
The VPU_VALID and VPU_OVP_FAULT bits are related to the internal pull-up voltage
applied on the CC pins when the device is operating in source power role. They give
information on an internal supply issue that could prevent the device to detect a valid
connection to a distant device.
DocID028937 Rev 1
35/69
69