STUSB1600 datasheet(30/69 Pages) STMICROELECTRONICS

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I2C register map

STUSB1600

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DocID028937 Rev 1

5.1.4

CC_CONNECTION_STATUS

Address: 0Eh

Access: RO

Note: this register gives the connection state of the CC pins and on associated operating

modes of the device.

The DEVICE_POWER_MODE bit indicates the power consumption mode of the device at

start-up and during operation:

•

In normal mode, all the internal circuits are turned on

•

In standby mode, the CC interface and the voltage monitoring blocks remain off until a

connection is detected.

The standby mode power is disabled by default and can be activated through NVM

programming (see Section 6: Start-up configuration).

The CC_POWER_ROLE bit is relevant only when a connection is established and the

device is attached.

Table 21. CC_CONNECTION_STATUS register

Bit

Field Name

Reset

Description

7:5

CC_ATTACHED_MODE

000b

000b: no device attached

001b: sink attached

010b: source attached

011b: debug accessory attached

100b: audio accessory attached

101b: do not use

110b: do not use

111b: do not use

DEVICE_POWER_MODE

(NVM)

0b: operating in normal power mode

1b: operating in standby power mode

CC_POWER_ROLE

0b: operating as a sink

1b: operating as a source

Reserved

Do not use

CC_VCONN_SUPPLY

0b: VCONN is not supplied on CC pin

1b: VCONN is supplied on CC pin

CC_ATTACH

0b: not attached

1b: attached

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