ADLINK Technology I-Pi SMARC User Manual page 32

I-Pi-SMARC User's Guide
5.11 General Purpose I2C
The SMARC specification supports a total of 6 different I2C busses on its pinout. Most of these busses are designated for specific functions such as I2C
for camera management, I2C for EDID on HDMI, LVDS panels or I2C for PMIC. Just one I2C bus is for general purpose.
Name Pin # Description
I2C_GP_DAT S49 General purpose I2C data signal
I2C_GP_CK S48 General purpose I2C clock signal
Most of the other I2C busses are described in their designated function tables rather than in a single big list.
Below is an overview of all I2C busses and where to find them.
Name Pin # Description
I2C_LCD_DAT S140 DDC data line used for flat panel detection and control
I2C_LCD_CK S139 DDC clock line used for flat panel detection and control
HDMI_CTRL_CK P105 I2C_CLK line dedicated to HDMI
HDMI_CTRL_DAT P106 I2C_DAT line dedicated to HDMI
I2C_CAM0_DAT S7 I2C data for serial camera data support link
I2C_CAM0_CK S5 I2C clock for serial camera data support link
I2C_CAM1_DAT S2 I2C data for serial camera data support link
I2C_CAM1_CK S1 I2C clock for serial camera data support link
I2C_PM_DAT P122 Power management I2C bus DATA (SMBus for x86)
I2C_PM_CK P121 Power management I2C bus CLK (SMBus for x86)
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I/O I/O Power PU /
Type Level Domain PD
I/O OD 1.8V Runtime PU 2k2
CMOS
O OD 1.8V Runtime PU 2k2
CMOS
Where to find
LVDS / DSI / eDP tables
LVDS / DSI / eDP tables
HDMI table
HDMI table
MIPI CSI table
MIPI CSI table
MIPI CSI table
MIPI CSI table
Power and System Management
Power and System Management
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Comments
SGET SMARC Rev 2.1