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Figure 1: A high-level view of a PD 2.0 power
contract negotiation |
The Power Delivery 2.0 protocol brings a boatload of intelligence to the process of establishing power relationships between partners in a USB Type-C link. In previous posts, we've examined the
basics of the two standards, the workings of
USB Type-C cable detection, how dual-role port devices are handled, and
PD 2.0 messaging. Next, let's look at PD 2.0 in action by deconstructing the initialization of a Google Chromebook laptop, which was one of the first Power Delivery devices on the market.
