I2C Slave Interface Delay Element Configuration for Collision Suppression

The patent divides the delay function into three separate delay elements (first delay element for clock line rising edge, second delay element for clock line falling edge, third delay element for data line) instead of using a single or two delay elements. Each delay element is independently configured to address specific collision problems, allowing optimal suppression of false start/stop signal generation and detection while maintaining signal synchronization.

The patent applies different delay time characteristics to different parts of the signal transmission: the first delay element has a first delay time for clock rising edges, the second delay element has a second delay time for clock falling edges, and the third delay element has a third delay time for data line transitions. This localized optimization allows each delay element to be tuned independently for its specific function, suppressing false signals while minimizing impact on overall transmission speed.

The patent implements dynamic delay adjustment where the delay elements can be configured with different delay times based on the operating mode and device characteristics. The system adapts the delay parameters to match the speed characteristics of connected slave units, whether operating in standard mode (100 kHz), fast mode (400 kHz), or other modes, thereby preventing collisions while maintaining compatibility with slow slave units.