18.6.2 CRU Oscillator Trimming
| Name: | OSCTRIM |
| Offset: | 0x4 |
| Reset: | 0x00000000 |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| TUN[5:0] | |||||||||
| Access | R/W/L | R/W/L | R/W/L | R/W/L | R/W/L | R/W/L | |||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | |||
Bits 5:0 – TUN[5:0] Internal Fast RC (FRC) Oscillator Tuning bits
Note: The
system unlock sequence must be done before this register can be
written.
| Value | Description |
|---|---|
| 011111 | Maximum Frequency |
| 011110 | — |
| ... | — |
| 000001 | — |
| 000000 | Center Frequency, oscillator is running at calibrated frequency |
| 111111 | — |
| 111110 | — |
| ... | — |
| 100001 | — |
| 100000 | Minimum Frequency |