Re: Low voltage I/O for MPC555

Could anybody tell me what the address of the data register is for 
the EBI? It seems to be a lot more complicated than just writing to a 
data register like it is when writing the GPIO(address 0x306100). Is 
there a special setup that is needed? Thanks for the help.

Brock
--- In [email protected], "Dobbin Allan-r11834" 
<Allan.Dobbin@...> wrote:
>
> The GPIO are 5V.  If the LCD interface is such that you can connect 
it
> to the EBI external bus interface and use it as memory mapped I/O 
using
> the chip selects, then the bus signals are all 3.3V.
>  
> - Allan
> 
> ________________________________
> 
> From: [email protected] [mailto:[email protected]] On 
Behalf
> Of brockmid
> Sent: Tuesday, November 28, 2006 11:19 AM
> To: [email protected]
> Subject: [MPC500] Low voltage I/O for MPC555
> 
> 
> 
> Hello,
> Are there any ports that can be used for I/O which are low voltage 
> (i.e. less than 5 volts). Currently I am using GPIO (address: 
0x306100) 
> port but I dont see any option to use this in low voltage mode. I 
am 
> interfacing this micro with an LCD which requires at most 3.3V for 
the 
> data lines. I would like to connect directly to the LCD instead of 
> using bus transceiver chips. Thanks for the help.
> 
> Brock
> 
> 
> 
>  
> 
> 
> [Non-text portions of this message have been removed]
>