STUSB1600 Datasheet, PDF (37/69 Pages) STMicroelectronics – Power hubs and docking stations

STUSB1600
I²C register map
5.1.11
CC_VCONN_SWITCH_CTRL
Address: 1Eh
Access: R/W
Note: this register allows the default current limit of the power switches supplying V_CONN on
the CC pins to be changed.
Table 28. CC_VCONN_SWITCH_CTRL register
Bit
Field name
Reset
Description
7:4 Reserved
0000b Do not use
3:0 CC_VCONN_SWITCH_ILIM
0000b
(NVM)
0000b: 350 mA (default)
0001b: 300 mA
0010b: 250 mA
0011b: 200 mA
0100b: 150 mA
0101b: 100 mA
0110b: 400 mA
0111b: 450 mA
1000b: 500 mA
1001b: 550 mA
1010b: 600 mA
5.1.12
VCONN_MONITORING_CTRL
Address: 20h
Access: R/W
Note: this register allows the default voltage monitoring conditions for V_CONN to be modified.
Table 29. VCONN_MONITORING_CTRL register
Bit
Field name
Reset
Description
7 VCONN_MONITORING_EN
0b: disables UVLO threshold detection on VCONN
1b
pin
1b: enables UVLO threshold detection on VCONN
pin
0b: high UVLO threshold of 4.65 V
6 VCONN_UVLO_THRESHOLD
0b
1b: low UVLO threshold of 2.65 V (case where
V_CONN-powered accessories are operating down to
2.7 V)
5 Reserved
1b Do not use
4 Reserved
0b Do not use
3:0 Reserved
0000b Do not use
Disabling the UVLO threshold detection on the VCONN pin deactivates the V_CONN power
path and sets the VCONN_PRESENCE bit to 0b in the MONITORING_STATUS register.
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