You can usually tell a Colpitts oscillator by remembering it starts with C and the feedback loop has a split capacitor (as opposed to a tapped inductor). The post also looks at Pierce oscillator ...

This IP is a crystal oscillator DUP IO pad designed for low-power consumption applications. The pierce oscillator works in parallel mode and supports a frequency ranged from 2MHz to 8MHz, with the ...

This is a crystal oscillator IO pad designed for low-power consumption application. The OSC power supply is 3.3V, and the IO pad provides clock signal under 1.8V core power supply. The OSC is a Pierce ...