Getting Started with EZ-
PD™ CCG3
Document No. 002-00210 Rev. *A
21
9. A successful PD contract can be seen from the PD message sequence. From
, it is clear that the
Type-C power adapter used in this example (Apple 29W USB-C power adapter) is a DFP (Source/Power
Provider) and the Type-C port of the CY4531 CCG3 EVK is a UFP (Sink/Power Consumer). Looking at the
‘Vbus’ column in
, it can be seen that the V
BUS
voltage is set to 14.8V at the end of the power contract
negotiation.
Figure 16. EZ-PD Analyzer Utility Showing PD Packets Captured on CC Line
SRC PDO2: 14.8V, 2A
SRC PDO1: 5V, 2.4A
10. The CC trace capture shown in
shows that a power contract for 14.8 V is established, and the Type-C
power adapter is providing 14.8 V to the device. During the power negotiation phase, the power provider (that is,
the Type-C power adapter) sends the
Source_Capabilities
message to the attached power consumer device
(that is, the CY4531 CCG3 EVK). The
Source_Capabilities
shows the custom PDOs
(
Power Data Obj-Source 1
and
Power Data Obj-Source 2
) supported by the Type-C power adapter.
11. The
Request
message after the
Source_Capabilities
message is always sent by the power consumer device to
request the power. Since the CCG3 device can establish a power contract for 14.8 V, it requests the PDO object
at position 2, which corresponds to the 14.8V PDO. Refer to
USB Power Delivery (PD) Spec Revision 2.0,
for more details on PD messages.
12. Looking at the
and as mentioned in step 9, it can be seen that the V
BUS
voltage is set
to 14.8V at the end of the power contract negotiation. This confirms that at the initial stage of the setup, the
power contract of 14.8V is established between the Type-C power adapter and the CY4531 CCG3 EVK.
5.2
Modify Configuration Parameters Using EZ-PD Configuration Utility
This section covers the steps for updating the configuration parameters and programming the CCG3 device using the
EZ-PD Configuration Utility. Ensure that the latest version of
for successfully executing the steps described in this section.
1. Disconnect the hardware setup described in
Test CY4531 CCG3 EVK Setup with the Default Configuration and
ensure jumper J4 and J3 of CY4531 CCG3 EVK’s daughter card are set to the 2-3
positions. Connect the CY4531 CCG3 EVK setup to the PC using a USB 2.0 Type-A to Mini-B cable. The
CY4531 CCG3 E
VK’s daughter card’s USB2.0 receptacle at the J7 connector (on the backside of the CCG3
daughter card) must be used for this setup as shown in
. Wait for driver detection and binding for the
USB-Serial controller on the CY4531 CCG3 EVK.
