70.6.2 USB Type-C

The TCPC enables a software implementation of the USB Type-C CC Control and sensing and of the USB Type-C Power Control for V_BUS as defined in the Universal Serial Bus Type-C™ Port Controller Interface Specification. The TCPC provides both a user interface compatible with the programmer model of the USB Type-C Port Controller and a direct access to the Configuration Channel (CC) hardware. V_BUS detection and control hardware is available through the PIO controller externally to the TCPC.

The Configuration Channel (CC) used in the discovery and configuration of connections across a USB Type-C cable is further defined in the Universal Serial Bus Type-C™ Port Controller Interface Specification.

The Configuration Channel (CC) hardware can be controlled by TCPC_UPC, and the resulting outputs can be observed in TCPC_UPS, as shown in the table and figure that follow.

After any software change in TCPC_UPC or after any change on the CC1 or CC2 pins, the CC comparator outputs in TCPC_UPS.CC1ID and TCPC_UPS.CC2RDT are not valid before some update delay as shown in the Max Delay Update column of the table below.

These update delays must be respected after any TCPC_UPC software change when implementing the CC control and sensing as specified by the Universal Serial Bus Type-C™ Port Controller Interface Specification.

The CC comparator outputs in TCPC_UPS.CC1ID and TCPC_UPS.CC2RDT are debounced by a glitch filter rejecting any pulse of t_TCPCfilter = 450 μs or less as shown in the Min Glitch Filtering column of the table below.

Any longer filtering or debouncing, such as during the t_CCDebounce time as specified in the Universal Serial Bus Type-C Cable and Connector Specification, must be performed by periodically sampling TCPC_UPS.