CCG4 is a dual port controller. Since you are cutting down most of the dock part and only using the upstream facing display datapath you can choose a single port controller - CCG3/CCG2.
You will require the mux and display splitter for your application, but the DMC is not required.
Please also take a look at this CCG2 Monitor/Dock reference design: https://www.cypress.com/documentation/reference-designs/ez-pd-ccg2-usb-type-c-monitordock-solution - You will have to remove the hub and downstream part of it like you did with CCG4, but retain the billboard controller.
CCG3 incorporates an internal billboard, to comply with alternate mode specifications.
Thanks for the recommendation. Because we have other designs using dual port CCG4 chip (CYPD4236) and probably using same Firmware I prefer CCG4 CYPD4236 for my design.
In my application (sink DisplayPort signal only), do I need Billboard support ?
EZ-PD Dock ref design guide mentioned that "DMC is providing Billboard support to indicate alternate mode status".
If I don't use DMC, host or DFP or notebook will be sending out alt mode displayPort signal?
On the FW side: Can I use ref design provided FW for CCG4 chip as it is?
What are the options to do the FW upload to the CCG4 chip?
- Billboard is required for alt mode sink. You can see it is present in CCG2 ref design as well.
- Dock ref design uses CY7C65219 as DMC+billboard. you will not require DMC functionality but billboard is required. Your question will be better answered by this collateral.
- The CCG4 Dock FW will be slightly different to standard FW since it includes DMC and other components related to power system and USB datapath.
- FW programming can be done through either SWD + miniprog3 or I2C (CYPD4236 comes pre-programmed with I2C bootloader + application firmware).