16.14.9 RxyI2C

I²C Pad Rxy Control Register

Important:

Refer to the “Pin Allocation Table” for details about pin availability per port
Unimplemented bits will read back as ‘0’

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

Refer to the “Pin Allocation Table” for details about pin availability per port Unimplemented bits will read back as ‘0’

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.