Address offset: 0x654
SAADC provides two operational noise shaping modes (one that prioritizes higher bandwith, while the other prioritizes higher accuracy) that allow trade-offs between ADC resolution, power consumption, and signal bandwidth.
| Bit number | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID | A | A | |||||||||||||||||||||||||||||||||
| Reset 0x00000000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| ID | R/W | Field | Value ID | Value | Description | ||||||||||||||||||||||||||||||
| A |
RW |
NOISESHAPE |
Noise shaping configuration |
||||||||||||||||||||||||||||||||
|
Disable |
0 |
Disable noiseshaping. Configurable oversampling. |
|||||||||||||||||||||||||||||||||
|
NS1 |
1 |
Noiseshaping and decimating. Decimation ratio 8, maximum continuous output 125 kS/s, with resulting bandwidth at 40 kHz. Recommended resolution setting is 12 bits or higher. Takes precedence over the OVERSAMPLING register. |
|||||||||||||||||||||||||||||||||
|
NS2 |
2 |
Noiseshaping and decimating. Decimation ratio 16, maximum continuous output 62.5 kS/s, with resulting bandwidth at 20 kHz. Recommended resolution setting is 14 bits. Takes precedence over the OVERSAMPLING register. |
|||||||||||||||||||||||||||||||||
|
NS3 |
3 |
Noise shaping with oversampling set by the OVERSAMPLE register. Recommended resolution setting is 14 bits. |
|||||||||||||||||||||||||||||||||
|
Audio |
1 |
Use enumerator NS1 for future compatibility. This enumerator is deprecated. |
|||||||||||||||||||||||||||||||||
|
Accuracy |
2 |
Use enumerator NS2 for future compatibility. This enumerator is deprecated. |
|||||||||||||||||||||||||||||||||