37.7.25 CVD Scan Descriptor 3 Control 3
| Name: | CVDSD3C3 |
| Offset: | 0x138 |
| Reset: | 0x00000000 |
| Property: | - |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| SD3EN[1:0] | SD3BUF | SD3INTEN | SD3SELF | SD3MUT | |||||
| Access | R/W/HC | R/W/HC | R/W | R/W | R/W | R/W | |||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | |||
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| CVDEN | CVDCPL[2:0] | ||||||||
| Access | R/W | R/W | R/W | R/W | |||||
| Reset | 0 | 0 | 0 | 0 | |||||
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| SD3ACQTIME[6:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | ||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| SD3CHGTIME[6:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | ||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
Bits 31:30 – SD3EN[1:0] Scan Descriptor Enable Mode
| Value | Description |
|---|---|
| 00 | Disables the Scan Descriptor. |
| 01 | Executes the Scan Descriptor one time only, then clears the enable. |
| 10 | Executes the Scan Descriptor, and keeps it enabled. Then, moves on to the next enabled descriptors. |
| 11 | Executes the Scan Descriptor in a loop until a threshold match is detected, then, clears the enable mode and moves on to next enabled descriptors. |
Bit 27 – SD3BUF Scan Descriptor CVD Buffer Enable
| Value | Description |
|---|---|
| 1 | Uses CVD buffer output as shared ADC (ADC2) input. |
| 0 | Does not use CVD buffer output as shared ADC (ADC2) input. |
Bit 26 – SD3INTEN Scan Descriptor Interrupt Enable
| Value | Description |
|---|---|
| 1 | Scan Descriptor creates an interrupt if the accumulator threshold is met. |
| 0 | Scan descriptor does not create an interrupt. |
Bit 25 – SD3SELF Scan Descriptor Self Measurement Mode
| Value | Description |
|---|---|
| 1 | Enables the Self Measurement mode; RX outputs are part of CVD measurement and are driven. |
| 0 | Disables the Self Measurement mode; RX outputs are not part of CVD measurements. |
Bit 24 – SD3MUT Scan Descriptor Mutual Mode
| Value | Description |
|---|---|
| 1 | Enables the Mutual Measurement mode; TX outputs are part of CVD measurement and are driven. |
| 0 | Disables the Mutual Measurement mode; TX outputs are not part of CVD measurements. |
Bit 19 – CVDEN Capacitive Voltage Division Enable bit
| Value | Description |
|---|---|
| 1 | CVD operation is enabled |
| 0 | CVD operation is disabled |
Bits 18:16 – CVDCPL[2:0] Capacitor Voltage Divider (CVD) Setting bits
| Value | Description |
|---|---|
| 111 | 7 * 2.5 pF = 17.5 pF |
| 110 | 6 * 2.5 pF = 15 pF |
| 101 | 5 * 2.5 pF = 12.5 pF |
| 100 | 4 * 2.5 pF = 10 pF |
| 011 | 3 * 2.5 pF = 7.5 pF |
| 010 | 2 * 2.5 pF = 5 pF |
| 001 | 1 * 2.5 pF = 2.5 pF |
| 000 | 0 * 2.5 pF = 0 pF |