1 of 1 people found this helpful
Welcome in the fascinating world of PSoCs!
To answer your question: there is an 8-bit wide shift register which you may combine to form a 24-bit wide register.
I would suggest you to download and install the PSoC IDE named Creator from here. You wll get access to all the components available including detailled datasheets and example programs.
Additinally you may get hands on a Prototyping kit which will allow you to program and debug your projects for few money.