Lpc2000

I want to add a lpc2214 to an existing robot that currently has 3
18f252's connected via
I2C. The LPC would become that MASTER and the PIC's become peripherals.
The PIC's
are at 5V due to external sensors and control circuits. 

Questions: 1. What voltage shoudl the SDA & SCL be pulled up to?
                  2. Max clock rate for 10inch (25cm) cable?

Thanks,
    George


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