As usual: That depends, ;-)
In your selected PSoC you have got two (2) Serial Control Blocks (SCBs). Easiest would be to let Creator choose which pins to use by setting them to <auto-assign during build>
When choosing pins manually you will see that you've got one choice for SCB (P4_0) and two for SCB (P0_4 and P3_0).
thanks bob ,
so if i connect it :
UART_RX ---> p4_0
I2C_SCL --> p3_0
thats ok ??
and another question what are the advantage of an SCB block vs regular one ?? ( UART(SCB mode)[v3.10] vs UART[v2.50] )
it seems that u can chose more pins with the UART[v2.50] so why use the SCB mode??
The "U" in USB stands for "Universal". You can use an USB for many different components. Thus, they are more "valuable" and are saved until you are really in need. So when you are satisfied with an SCB for communication, take that. UDB pins cannot be routed to ports >= 4.