STUSB1600 datasheet(37/69 Pages) STMICROELECTRONICS

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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 VCONN on

the CC pins to be changed.

5.1.12

VCONN_MONITORING_CTRL

Address: 20h

Access: R/W

Note: this register allows the default voltage monitoring conditions for VCONN to be modified.

Disabling the UVLO threshold detection on the VCONN pin deactivates the VCONN power

path and sets the VCONN_PRESENCE bit to 0b in the MONITORING_STATUS register.

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

Table 29. VCONN_MONITORING_CTRL register

Bit

Field name

Reset

Description

VCONN_MONITORING_EN

0b: disables UVLO threshold detection on VCONN

1b: enables UVLO threshold detection on VCONN

VCONN_UVLO_THRESHOLD

0b: high UVLO threshold of 4.65 V

1b: low UVLO threshold of 2.65 V (case where

VCONN-powered accessories are operating down to

2.7 V)

Reserved

Do not use

Reserved

Do not use

3:0

Reserved

0000b Do not use

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