44.8.9 DAC0 Control
| Name: | DACCTRL0 |
| Offset: | 0x0C |
| Reset: | 0x0000 |
| Property: | PAC Write-Protection, Enabled-Protected |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| REFRESH[3:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | |||||
| Reset | 0 | 0 | 0 | 0 | |||||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| DITHER | RUNSTDBY | CCTRL[1:0] | ENABLE | LEFTADJ | |||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | |||
Bits 11:8 – REFRESH[3:0] Refresh period
| Value | Description |
|---|---|
| 0x0 | Refresh is disabled. |
| 0x1 | Reserved |
| 0x2 to 0xF |
Bit 7 – DITHER Dithering Mode
| Value | Description |
|---|---|
| 0 | Dithering mode is disabled. |
| 1 | Dithering mode is enabled. |
Bit 6 – RUNSTDBY Run in Standby
This bit controls the behavior of DAC0 during standby sleep mode.
| Value | Description |
|---|---|
| 0 | DAC0 is disabled during standby sleep mode. |
| 1 | DAC0 continues to operate during standby sleep mode. |
Bits 3:2 – CCTRL[1:0] Current Control
This field defines the current in output buffer according to conversion rate.
| Value | Name | Description |
|---|---|---|
| 0x0 | CC100K | GCLK_DAC ≤ 1.2MHz (100kSPS) |
| 0x1 | CC1M | 1.2MHz < GCLK_DAC ≤ 6MHz (500kSPS) |
| 0x2 | CC12M | 6MHz < GCLK_DAC ≤ 12MHz (1MSPS) |
| 0x3 | Reserved | Reserved |
Bit 1 – ENABLE Enable DAC0
This bit enables DAC0 when DAC Controller is enabled (CTRLA.ENABLE).
| Value | Description |
|---|---|
| 0 | DAC0 is disabled. |
| 1 | DAC0 is enabled. |
Bit 0 – LEFTADJ Left Adjusted Data
This bit controls how the 12-bit conversion data is adjusted in the Data and Data Buffer registers.
| Value | Description |
|---|---|
| 0 | DATA0 and DATABUF0 registers are right-adjusted. |
| 1 | DATA0 and DATABUF0 registers are left-adjusted. |