6P6C I2C Connector Standard
In order to allow many of our I2C peripherals to easily communicate with each other, we standardized on a standard 6 position, 6 conductor (6P6C) modular connector, colloquially referred to (incorrectly) as an RJ11, RJ14, or RJ25.
|1||White||White/Green||/OEN - Outputs enabled when low|
|4||Green||White/Blue||/RESET - Resets external peripherals when low. Alternatively, on some boards, can be used for +5V supply (<1mA)|
|6||Blue||Green/White||/IRQ - Input to the CPU, when pulled low indicates some peripheral is signaling an interrupt to be handled|