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The TPS65982 is a stand-alone USB Type-C & Power Delivery (PD) controller providing cable plug and orientation detection at the USB Type-C connector.
Upon cable detection, the TPS65982 communicates on the CC wire using the USB PD protocol. When cable detection and USB PD negotiation are complete, the device enables the appropriate power path and configures alternate mode settings for internal and (optional) external multiplexers. The mixed-signal front end on the CC pins advertises default (500 mA), 1.5 A or 3 A for Type-C power sources, detects a plug event and determines the USB Type-C cable orientation, and autonomously negotiates USB PD contracts by adhering to the specified bi-phase marked coding (BMC) and physical layer (PHY) protocol. The port power switch provides up to 3A downstream at 5V for legacy and Type-C USB power. An additional bi-directional switch path provides USB PD power up to 3A at a maximum of 20V as either a source (host), sink (device), or source-sink.
The TPS65982 is also an Upstream-Facing Port (UFP), Downstream-Facing Port (DFP), or Dual-Role Port for data. The port data multiplexer passes data to or from the top or bottom D+/D– signal pair.
By: Rachel Kalina
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