6 Replies Latest reply on Oct 11, 2018 6:02 PM by ShifangZ_26

    Source Cap changes after first connection (3123)


      My project is based on the CYPD3123 CTD reference design, However we are not implemented the DS type C connector instead we are powered off of a DC source.  It is more of a docking station design.  I have updated the Configuration of the 3123 via the configuration tool for it to be source default role, with 5V3A PDO, and the first connection looks correct to me, however the second and every one after is not.  After the first connection the Source Cap is no long advertised as 5V3A, it is changed to 5V1.2A.  I've attached a capture from the EZ-PD analyzer for reference.  Is this a by product of not being able to communicate with the 2122 device?  Is there ayway to correct this without making this a software project?