Getting Started with EZ-
PD™ CCG3
Document No. 002-00210 Rev. *A
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Figure 12
.
EZ-PD Analyzer Utility Showing PD Packets Captured on CC Line
Whenever a Type-C device is connected to the Type-C port of the CY4531 CCG3 EVK, a PD contract is established
between the CCG3 device and the attached Type-C device. The flow of CC messages as well as source and sink
Power Data Objects (PDOs
—used to expose source/sink port’s power capabilities in the CC messages) between the
power port partners can be monitored on the PC by using the EZ-PD Protocol Analyzer and running the EZ-PD
Analyzer Utility. This information helps in debugging the CCG3 firmware if there are any issues (errors, delays, no
contract, and so on) related to establishing the power contract between the CCG3 device and the attached Type-C
device.
5
CCG3 Configuration Parameter Modification Example
Many CCG configuration parameters are stored in the configuration tables in the
device’s internal flash memory. You
may need to make changes to these parameters based on system requirements and the end application. This section
provides a simple example of a Type-C ecosystem to describe how to change the configuration parameters using the
and how to verify the changes using the
Consider the example of a Type-C power adapter connected to the CY4531 CCG3 EVK. Assuming this Type-C
power adapter supports a custom PDO, the power contract between it and the CCG3 device of CY4531 CCG3 EVK
will be successfully established only if the CCG3 device supports the same custom PDO. The EZ-PD Configuration
Utility allows you to modify parameters such as the sink or source PDOs without making any changes to the base
firmware so that the CY4531 CCG3 EVK can successfully establish a power contract with the power adapter.
From a top-level perspective, the
following are the steps to modify the CCG3 device’s configuration parameters. The
following sections explain each step in detail.
1. Test the CY4531 CCG3 EVK in the default configuration with a Type-C power adapter to identify the established
power contract.
2. Update the configuration parameters (remove a sink PDO supported by
the power adapter’s custom PDOs such
as 14.8V, 2A) using the EZ-PD Configuration Utility.
3. Program the updated configuration parameters into the CCG3 device using the EZ-PD Configuration Utility and
verify.
4. Retest the CY4531 CCG3 EVK setup with a Type-C power adapter to verify the updated PDOs using the
CY4500 EZ-PD Protocol Analyzer.
