about the dm9000 in mini2440
jbe at pengutronix.de
Fri Dec 7 03:38:35 EST 2012
Yi Qingliang wrote:
> I got it finally, but not root cause.
> 1. connect jtag with openjtag(not the official openjtag, but 100ask.net
> produced based on openmoko's).
> 2. use ON/OFF switch on the board
> then I got "Wrong databus"
> but if I disconnect the power line, and reconnect it, everything OK.
> and if not connect jtager, and use ON/OFF switch, everyghing OK.
> what's the fuck problem?
Good question. The DM9000 uses the EED0 pin to decide if a 16 or 32 bit data
bus is in use, when the reset signal is gone. Maybe your system does
not "see" a correct reset.
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Linux Solutions for Science and Industry | http://www.pengutronix.de/ |
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