[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Solder ball U12

CPU setup is necessary. It is in the "phy" field of the

However, when network boot is selected (on pins BS1 and BS2),
the 25 MHz clock is enabled automatically if the mdio pin is 
sampled high. The clock is enabled at the end of the reset
sequence in this case. 

In both cases, reset to the PHY must be delayed so that the clock
is started before the reset to the phy is released. There are
several ways to do that. Axis standard method is to use an extra
reset circuit to generate the delayed reset.

Per Zander

On Tue, 24 Jun 2003, Brian Millar wrote:

> Does the TXER pin automatically clock out at 25 mhz on system reset, or is
> cpu setup necessary?
> Dan
> This e-mail was scanned by RAV Antivirus. (www.ravantivirus.com)