1. What is the IO voltage levels for all Pins especially OD, OS, PR pins
2. In datasheet, only XIN pin is mentioned. Please let me know which is XOUT pin to connect the crystal
3. What is the use of OSC_OUT pin?
4. Can I connect OS, OD and PR pins to VCC or GND instead to operate by GPIO of MCU?
Chintan,
Please see the levels for the pins here:
The part uses a Colpitts oscillator circuit as the XTAL input, as is stated here:
Refer to this excerpt from the CDCM9102 datasheet for the circuit for the XTAL:
The OSC_OUT pin is a buffered copy of the input clock, as is shown in the functional block diagram:
The OS*/OD*/PR* pins can be either pulled to VCC/GND through pull-up/pull-down resistors, or can be controlled externally by GPIO. In the latter case, I recommend still using a pull-up/pull-down resistor to set the initial values.
Thanks,
Kadeem
