I understand external clock is provided from a designated PSoC4 pin. I think the designated pins is one of P0.4, P2.7, P5.1 in CY8C4247LQI-BL483. So I can not use XTRAL24I.
Is it right?
In the datasheet is a pinout table, and it looks like XTAL24I (pin 16, 24 Mhz) or XTAL32I/P6.1
(pin 3, 32 Khz) is used when external clock is selected in the clock editor. QFN.