3.6

High voltage protections

power path. The device integrates an internal circuitry on the CC pins that tolerates high voltage and ensures

3.7

Hardware fault management

The STUSB4500 handles during system operation some pre-identified hardware fault conditions. When such

conditions happen, the circuit goes into a transient error recovery state named ErrorRecovery in the Type-C FSM

as defined in the USB Type-C standard specifications.

The error recovery state is equivalent to force a detach event. When entering in this state, the device de-asserts

terminations from the CC pins during several tens of milliseconds. Then, it transitions to the unattached state.

The STUSB4500 goes into error recovery state when at least one condition listed below is met:

•

•

•

If after a hard reset the power delivery communication with the source is broken

The detection of a hardware fault is advertised through the GPIO pin when configured in ERROR_RECOVERY

mode.

See Section 7 Electrical characteristics for threshold values.

3.8

Debug accessory mode detection

The STUSB4500 detects a connection to a debug and test system (DTS) as defined in the USB Type-C standard

specification. The debug accessory detection is advertised through the GPIO pin when configured in DEBUG

mode.

connected device. The voltage levels on the CC1 and CC2 pins give the orientation and current capability as

described in the table below. The GPIO pin configured in DEBUG mode is asserted to advertise the DTS

detection and the A_B_SIDE pin indicates the orientation of the connection.

#

CC1 pin

(CC2 pin)

CC2 pin

(CC1 pin)

Charging current

configuration

A_B_SIDE pin

CC1/CC2

(CC2/CC1)

1

Default

Hi-Z (0)

2

1.5 A

Hi-Z (0)

3

3.0 A

Hi-Z (0)

4

def/1.5 A/3 A

def/1.5 A/3 A

Default

Hi-Z (Hi-Z)

STUSB4500

High voltage protections

DS12499 - Rev 2

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