Do I need to use the on-chip PLL? If the PLL is not used, could I leave the pins (54, 47, 48, 49, 50, 51, 52 & 55) associated with this function unconnected?
Descriptive Answer:
Yes.
And you also always need to configure the analog PLL. Be sure to include the passive components for the Analog PLL Loop Filter, which connect to pins 49, 50, 51. Pins 47 & 48 should be connected to +3.3V, while Pins 51 & 52 should be connected to ground. You will need to provide an oscillator input on Pin 54. Some of the supported frequencies include 1x, 2x, 4x, 8x, 16x, 24x, and 32x multiples of 2.048MHz. Pin 55 should be driven low for normal operation. See the CTx12 Data Sheet for additional details
And you also always need to configure the analog PLL. Be sure to include the passive components for the Analog PLL Loop Filter, which connect to pins 49, 50, 51. Pins 47 & 48 should be connected to +3.3V, while Pins 51 & 52 should be connected to ground. You will need to provide an oscillator input on Pin 54. Some of the supported frequencies include 1x, 2x, 4x, 8x, 16x, 24x, and 32x multiples of 2.048MHz. Pin 55 should be driven low for normal operation. See the CTx12 Data Sheet for additional details
