STUSB1600 datasheet(39/69 Pages) STMICROELECTRONICS

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STUSB1600

I2C register map

5.1.15

VBUS_DISCHARGE_TIME_CTRL

Address: 25h

Access: R/W

Note: this register contains the parameter used to define the VBUS discharge time when the

internal VBUS discharge path is activated on the VBUS_SENSE pin.

5.1.16

VBUS_DISCHARGE_STATUS

Address: 26h

Access: RO

Note: this register gives information, during operation, on the activation state of the internal

VBUS discharge path on the VBUS_SENSE pin.

5.1.17

VBUS_ENABLE_STATUS

Address: 27h

Access: R0

Note: this register gives information, during operation, on the activation state of the VBUS

power path through VBUS_EN_SRC pin in source power role and VBUS_EN_SNK pin in

sink power role.

Table 32. VBUS_DISCHARGE_TIME_CTRL register

Bit

Field name

Reset

Description

7:4

VBUS_DISCHARGE_TIME_TO_0V

1010b

(NVM)

Binary coded TDISPARAM coefficient used to

compute the VBUS discharge time to 0 V:

84 ms (typical) * TDISPARAM

840 ms is the default discharge time

3:0

Reserved

1111b

Do not use

Table 33. VBUS_DISCHARGE_STATUS register

Bit

Field name

Reset

Description

VBUS_DISCHARGE_EN

0b: VBUS discharge path is deactivated

1b: VBUS discharge path is activated

6:1

Reserved

0000000b

Do not use

Table 34. VBUS_ENABLE_STATUS register

Bit

Field name

Reset

Description

7:2

Reserved

Do not use

VBUS_SINK_EN

0b: VBUS sink power path is disabled

1b: VBUS sink power path is enabled

VBUS_SOURCE_EN

0b: VBUS source power path is disabled

1b: VBUS source power path is enabled

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