i2c-0 i2c B2C2 FlexCop I2C to demod I2C adapter i2c-1 i2c B2C2 FlexCop I2C to eeprom I2C adapter i2c-2 i2c B2C2 FlexCop I2C to tuner I2C adapter i2c-3 i2c CX24123 tuner I2C bus I2C adapter