25.5.2 Dual Mode Control Configuration
| Name: | DUALCTRL |
| Offset: | 0x01 |
| Reset: | 0x00 |
| Property: | - |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| SDAHOLD[1:0] | FMPEN | ENABLE | |||||||
| Access | R/W | R/W | R/W | R/W | |||||
| Reset | 0 | 0 | 0 | 0 | |||||
Bits 3:2 – SDAHOLD[1:0] SDA Hold Time
These bits select the SDA hold time for the TWI Client.
This bit field is ignored when the dual control is disabled.
| Value | Name | Description |
|---|---|---|
| 0x0 | OFF | Hold time OFF |
| 0x1 | 50NS | Short hold time |
| 0x2 | 300NS | Meets the SMBus 2.0 specifications under typical conditions |
| 0x3 | 500NS | Meets the SMBus 2.0 specifications across all corners |
Bit 1 – FMPEN FM Plus Enable
This bit selects the 1 MHz bus speed for the TWI Client. This bit is ignored when dual control is disabled.
Bit 0 – ENABLE Dual Control Enable
Writing this bit to ‘1’ enables the TWI dual
control.