I have a PIC18F13K50 (Master) which I'm trying to transmit some I2C commands to a DTMF chip (PCD3312 - Slave).
The processor has an inbuilt 16Mhz oscillator so I assume I include a "DEFINE I2C_SLOW 1" declaration to operate the I2C in standard 100KHz mode? Do I need to set any additional I2C timing registers directly through the processor or does PBP look after that?
What are the suggested resistance values for the data and clock lines for I2C?
Do I need to set these pins to digital inputs or just inputs?

Thanks for any help,

Troy