31.5.6 LUT n Control A
| Name: | LUTnCTRLA |
| Offset: | 0x08 + n*0x04 [n=0..3] |
| Reset: | 0x00 |
| Property: | Enable-Protected |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| EDGEDET | OUTEN | FILTSEL[1:0] | CLKSRC[2:0] | ENABLE | |||||
| 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 – EDGEDET Edge Detection
| Value | Description |
|---|---|
| 0 | Edge detector is disabled |
| 1 | Edge detector is enabled |
Bit 6 – OUTEN Output Enable
1’, the pin
configuration of the PORT I/O-Controller is overridden.| Value | Description |
|---|---|
| 0 | Output to pin disabled |
| 1 | Output to pin enabled |
Bits 5:4 – FILTSEL[1:0] Filter Selection
These bits select the LUT output filter options.
| Value | Name | Description |
|---|---|---|
| 0x0 | DISABLE | Filter disabled |
| 0x1 | SYNCH | Synchronizer enabled |
| 0x2 | FILTER | Filter enabled |
| 0x3 | - | Reserved |
Bits 3:1 – CLKSRC[2:0] Clock Source Selection
This bit selects between various clock sources to be used as the clock (CLK_LUTn) for an LUT.
The CLK_LUTn of the even LUT is used for clocking the sequencer of an LUT pair.
| Value | Name | Description |
|---|---|---|
0x00 | CLKPER | CLK_PER is clocking the LUT |
0x01 | IN2 | LUT input 2 is clocking the LUT |
0x02 | - | Reserved |
0x03 | - | Reserved |
0x04 | OSCHF | Internal high-frequency oscillator before prescaler is clocking the LUT |
0x05 | OSC32K | Internal 32.768 kHz oscillator is clocking the LUT |
0x06 | OSC1K | Internal 32.768 kHz oscillator divided by 32 (1.024 kHz) is clocking the LUT |
0x07 | PLL | PLL is clocking the LUT |
Bit 0 – ENABLE LUT Enable
| Value | Description |
|---|---|
| 0 | The LUT is disabled |
| 1 | The LUT is enabled |