[U-Boot-Users] CompactFlash TrueIDE with 1 chip select

[U-Boot-Users] CompactFlash TrueIDE with 1 chip select

[Ben Warren]

Hello,

I'm planning on using Compact Flash on an MPC8349 in True IDE mode, but
only have one chip select line available.  The local bus on this chip is
for all intents and purposes the same as all of the 8xx/82xx chips that
came before it.  The plan is do some address decoding magic in a CPLD to
provide two indirect chip selects.  

Browsing through the U-boot code and some other boards using True IDE, I
think this should work without much drama.  Does anyone have comments or
suggestions?

thanks,
Ben 

[U-Boot-Users] CompactFlash TrueIDE with 1 chip select

[llandre]

This AN provides some useful information

http://www.toshiba.com/taec/components/ApplNote/TSB_CF-IBM_PPC405GP_030523.pdf


Regards,
llandre

DAVE Electronics System House - R&D Department
web:   http://www.dave-tech.it
email: r&d2 at dave-tech.it


> Hello,
> 
> I'm planning on using Compact Flash on an MPC8349 in True IDE mode, but
> only have one chip select line available.  The local bus on this chip is
> for all intents and purposes the same as all of the 8xx/82xx chips that
> came before it.  The plan is do some address decoding magic in a CPLD to
> provide two indirect chip selects.  
> 
> Browsing through the U-boot code and some other boards using True IDE, I
> think this should work without much drama.  Does anyone have comments or
> suggestions?
> 
> thanks,
> Ben