STUSB1600 datasheet(21/69 Pages) STMICROELECTRONICS

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STUSB1600

Features description

The STUSB1600 goes into error recovery state when at least one condition listed below is

met:

•

Whatever the power role:

–

If an overtemperature is detected, the “THERMAL_FAULT” bit set to 1b

•

In source power role only:

–

If an internal pull-up voltage on CC pins is below UVLO threshold, the

“VPU_VALID” bit set to 0b.

–

If an overvoltage is detected on the CC pins, the “VPU_OVP_FAULT” bit set to 1b

–If the VBUS voltage is out of the valid voltage range during attachment, the

“VBUS_VALID” bit set to 0b.

–

If an undervoltage is detected on the VDD pin during attachment when UVLO

detection is enabled, the “VDD_UVLO_DISABLE” bit set to 0b.

–

If an overvoltage is detected on the VDD pin during attachment when OVLO

detection is enabled, the “VDD_OVLO_DISABLE” bit set to 0b.

The I2C register bits mentioned above in quotes give either the state of the hardware fault

when it occurs or the setting condition to detect the hardware fault (see Section 5.1:

3.8

Accessory mode detection

The STUSB1600 supports the detection of audio accessory mode and debug accessory

mode as defined in the USB Type-C standard specification with the following Type-C power

modes (see Section 6: Start-up configuration):

•

Source power role with accessory support

•

Sink power role with accessory support

•

Dual power role with accessory support

•

Dual power role with accessory and Try.SRC support

•

Dual power role with accessory and Try.SNK support.

3.8.1

Audio accessory mode detection

The STUSB1600 detects an audio accessory device when both the CC1 and CC2 pins are

pulled down to ground by an Ra resistor from the connected device. The audio accessory

detection is advertised through the CC_ATTACHED_MODE bits of the I2C register

CC_CONNECTION_STATUS (see Section 5.1: Register description).

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