CLKSEL=none
RISC-V Control Register.
| CLK | Kick Start XO Counter Setting |
| EN | Kick Start XO Enable |
| DRIVER | Kick Start XO Driver |
| PULSE | Kick Start XO 2X Pulse |
| CLKSEL | Kick Start XO Clock Select 0 (none): No kick start clock. 1 (test): Test Clock in P1.2 (TMR3[22]=1). 2 (ISO): Internal secondary oscilator 3 (IPO): Internal Primary Oscilator |