Ublox NEO-M8N GPS + HMC5983 User Manual

Hello, I would like to use this GPS+Magnetometer module to interface it to an autopilot I made by myself. Is there any manual that shows how to use the 6 output signals of this module?
I saw that there is a I2c and a RX/TX. Are both sensors on the I2C, or there is a communication channel per output?

Thank you for your kind reply.

Leonardo

Well, I found here the answers: NEO-M8N GPS + HMC5983 module

Thank you anyway