43.7.3 ADC Control Register C
| Symbol | Description | Symbol | Description | Symbol | Description |
|---|---|---|---|---|---|
| R | Readable bit | HC | Cleared by Hardware | (Grey cell) | Unimplemented |
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
| K | Write to clear | S | Software settable bit | — | — |
| Name: | CTRLC |
| Offset: | 0x8 |
| Reset: | 0x00000000 |
| Property: | Write-Protected, Enable-Protected |
| 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 | |
| CNT[15:8] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| CNT[7:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bits 15:0 – CNT[15:0] This bit-field selects an alternate trigger source delay counter
Free-running counter based on CTL_CLK times out when it reaches this value. At time out, the STRIG synchronous trigger will fire.
Note:
- This register is not valid unless either [CORCTRLn.STRGSRC=0x4 plus CHNCFG40/50.TRGSRCx=0x3 plus CHNCFG20.CSSx=1] or [CHNCFG40/50.TRGSRCx=0x4 plus CTRLB.SWCNVEN=0] for Synchronous Trigger from CTRLC.CNT.
- CTL_CLK = GCLK_ADC / (CTRLD.CTLCKDIV+1)
- This bit is Enabled Protected. (Writes are ignored when CTRLA.ENABLE = 1 and return a bus error).