42.8.8 TWIHS Filter Register
| Name: | TWIHS_FILTR |
| Offset: | 0x44 |
| Reset: | 0x00000000 |
| Property: | Read/Write |
TWIHS digital input filtering follows a majority decision based on three samples from SDA/SCL lines at peripheral clock frequency.
| 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 | |
| THRES[2:0] | |||||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 0 | 0 | 0 | ||||||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| PADFCFG | PADFEN | FILT | |||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 0 | 0 | 0 |
Bits 10:8 – THRES[2:0] Digital Filter Threshold
| Value | Description |
|---|---|
| 0 | No filtering applied on TWIHS inputs. |
| 1–7 | Maximum pulse width of spikes to be suppressed by the input filter, defined in peripheral clock cycles. |
Bit 2 – PADFCFG PAD Filter Config
See the electrical characteristics section for filter configuration details.
Bit 1 – PADFEN PAD Filter Enable
| Value | Description |
|---|---|
| 0 | PAD analog filter is disabled. |
| 1 | PAD analog filter is enabled. (The analog filter must be enabled if High-speed mode is enabled.) |
Bit 0 – FILT RX Digital Filter
| Value | Description |
|---|---|
| 0 | No filtering applied on TWIHS inputs. |
| 1 | TWIHS input filtering is active (only in Standard and Fast modes) |