51.7.4 Input Control
Note: This register is write-synchronized: SYNCBUSY.INPUTCTRL must be checked to ensure the
INPUTCTRL register synchronization is complete.
| Name: | INPUTCTRL |
| Offset: | 0x04 |
| Reset: | 0x0000 |
| Property: | PAC Write-Protection, Write-Synchronized |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| DSEQSTOP | MUXNEG[4:0] | ||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | |||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| DIFFMODE | MUXPOS[4:0] | ||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | |||
Bit 15 – DSEQSTOP Stop DMA Sequencing
Note: one more conversion
will be done after the last sequence is complete.
Bits 12:8 – MUXNEG[4:0] Negative MUX Input Selection
These bits define the MUX selection for the negative ADC input.
| Value | Name | Description |
|---|---|---|
| 0x00 | AIN0 | ADC AIN0 pin |
| 0x01 | AIN1 | ADC AIN1 pin |
| 0x02 | AIN2 | ADC AIN2 pin |
| 0x03 | AIN3 | ADC AIN3 pin |
| 0x04 | AIN4 | ADC AIN4 pin |
| 0x05 | AIN5 | ADC AIN5 pin |
| 0x06 | AIN6 | ADC AIN6 pin |
| 0x07 | AIN7 | ADC AIN7 pin |
| 0x08 - 0x17 | - | Reserved |
| 0x18 | AVSS | Internal ground |
| 0x19 - 0x1F | - | Reserved |
Bit 7 – DIFFMODE Differential Mode
| Value | Description |
|---|---|
| 0x0 | The ADC is running in singled-ended mode. |
| 0x1 | The ADC is running in differential mode. In this mode, the voltage difference between the MUXPOS and MUXNEG inputs will be converted by the ADC. |
Bits 4:0 – MUXPOS[4:0] Positive MUX Input Selection
These bits define the MUX selection for the positive ADC input. If the internal bandgap voltage input channel is selected, then the Sampling Time Length bit group in the Sampling Control register must be written with a corresponding value, as shown in “Table 54-24. Operating Conditions”.
| Value | Name | Description |
|---|---|---|
| 0x00 | AIN0 | ADC AIN0 pin |
| 0x01 | AIN1 | ADC AIN1 pin |
| 0x02 | AIN2 | ADC AIN2 pin |
| 0x03 | AIN3 | ADC AIN3 pin |
| 0x04 | AIN4 | ADC AIN4 pin |
| 0x05 | AIN5 | ADC AIN5 pin |
| 0x06 | AIN6 | ADC AIN6 pin |
| 0x07 | AIN7 | ADC AIN7 pin |
| 0x08 | AIN8 | ADC AIN8 pin |
| 0x09 | AIN9 | ADC AIN9 pin |
| 0x0A | AIN10 | ADC AIN10 pin |
| 0x0B | AIN11 | ADC AIN11 pin |
| 0x0C | AIN12 | ADC AIN12 pin |
| 0x0D | AIN13 | ADC AIN13 pin |
| 0x0E | AIN14 | ADC AIN14 pin |
| 0x0F | AIN15 | ADC AIN15 pin |
| 0x10 - 0x17 | - | Reserved |
| 0x18 | SCALEDVDDCORE | 1/4 Scaled VDDCORE Supply |
| 0x19 | SCALEDVBAT | 1/4 Scaled VBAT Supply |
| 0x1A | SCALEDVDD | 1/4 Scaled VDD Supply |
| 0x1B | BANDGAP | Bandgap Voltage |
| 0x1C-0x1D | - | Reserved |
| 0x1E | DAC0 | DAC0 Output |