16.14.9 RxyI2C
I2C Pad Rxy Control Register
Important: Refer to the “Pin
Allocation Table” for details about I2C compatible pins.
| Name: | RxyI2C |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| SLEW[1:0] | PU[1:0] | TH[1:0] | |||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | |||
Bits 7:6 – SLEW[1:0] I2C Specific Slew Rate Limiting Control
| Value | Description |
|---|---|
| 11 | I2C Fast mode Plus (1 MHz) slew rate enabled. The SLRxy bit is ignored. |
| 10 | Reserved |
| 01 | I2C Fast mode (400 kHz) slew rate enabled. The SLRxy bit is ignored. |
| 00 | Standard GPIO Slew Rate; enabled/disabled via the SLRxy bit |
Bits 5:4 – PU[1:0] I2C Pull-Up Selection
| Value | Description |
|---|---|
| 11 | Reserved |
| 10 | 10x current of standard weak pull-up |
| 01 | 2x current of standard weak pull-up |
| 00 | Standard GPIO weak pull-up, enabled via the WPUxy bit |
Bits 1:0 – TH[1:0] I2C Input Threshold Selection
| Value | Description |
|---|---|
| 11 | SMBus 3.0 (1.35V) input threshold |
| 10 | SMBus 2.0 (2.1V) input threshold |
| 01 | I2C-specific input thresholds |
| 00 | Standard GPIO Input pull-up, enabled via the INLVLxy registers |