COSC and CDIV Bits

The Current Oscillator Source Select (COSC) bits and the Current Divider Select (CDIV) bits indicate the current oscillator source and clock divider, respectively. When a new oscillator or divider is requested via the NOSC/NDIV bits, the COSC and CDIV bits remain unchanged until the clock switch actually occurs. When the switch actually occurs, hardware copies the NOSC and NDIV values into COSC and CDIV, the Oscillator Ready (ORDY) bit is set, and the NOSCR bit is cleared by hardware, indicating that the clock switch is complete.