View Full Version : Clock the Prop from ENC28J60?

01-16-2009, 02:33 AM
I'm thinking about building a circuit with an ENC28J60 ethernet controller...

Just noticed that it puts out a 6.25 MHz clock source by default...
This looks perfect for driving the Prop at 100 MHz!

I've seen that people have use the Prop with 5 MHz crystal to clock ENC28J60,
but this looks better to me.

Anybody see a problem with this?

Phil Pilgrim (PhiPi)
01-16-2009, 02:51 AM
The chip provides a CLKOUT pin for this purpose, so it ought to work.


01-16-2009, 12:52 PM
will the chip be able to handle being overclocked? Anyone test how well it works?

Mike Green
01-16-2009, 12:56 PM
Read the datasheet!

There's a graph showing the tested maximum system clock frequency vs. ambient temperature and supply voltage.