How To Change Output Voltage of Pin 13 to 60-110 mHz in roughly 0.05 in a Loop

Projects Programming
1

Currently I am not using a MISO (Master In Slave Out) Pin but I am using Pin 11 as MOSI (Master Out Slave In), Pin 13 as SCK (Serial Clock) and Pin 8 as SS (Slave Select), My question is how do I set the drive frequency to 60.00 MHz on Pin 13 do a analogRead() on Pin A0 and then set the drive frequency to 60.05 MHz on Pin 13 and do another analogRead() on Pin A0. This is a loop I would like to run from 60-110 mHz in roughly 0.05 mHz increments. is this possible if so can you provide a simple example of how I can do this in a loop. So basically I would like to set the output voltage of Pin 13 to 60-110 mHz in roughly 0.05 mHz increments.

Note:
60-110 mHz in roughly 0.05 mHz increments (10 bit / 1024 divisions over that range)

2

What device is creating the 60-110MHz? Normal Arduino only has 16 MHz clock, can't go that fast.
mHZ is not the same as MHz, you used both, which do you intend?