
3.2.23 I2C Interface
There are five I2C buses defined in the ULP-COM specification: PM (Power Management), LCD (Liquid
Crystal Display), GP (General Purpose), CAM (Camera) and HDMI. The sA3874i supports multiple masters and
slaves in fast mode (400 KHz operation). The I2C interface signals on the ULP-COM sA3874i edge connector are
shown below:
ULP-COM sA3874i Edge finger
Power management
I2C bus clock
Power management
I2C bus data
General purpose I2C
bus clock
General purpose I2C
bus data
LCD display I2C bus
clock
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